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Hike rates now says Bernard Hickey to prevent a damaging housing bubble and the fallout from it bursting

Posted in Opinion
"It's time now for the RBNZ to prioritise financial stability over its inflation target." Image sourced from

By Bernard Hickey

Reserve Bank Deputy Governor Grant Spencer gave an excellent speech this week explaining why the bank is seriously considering regulating to limit the growth of low deposit mortgages.

It was the bank's strongest indication yet it will intervene to cool an over-heated housing market.

Anyone thinking of borrowing more than 80% of the value of a property in the next couple of months should read the speech and know that window could be closed by the end of the year.

Banks are already closing the window.

They are imposing 'low equity premiums' on interest rates for mortgages with loan to value ratios of more than 90%.

Brokers have told me the 'loosest' banks in the market, ANZ and ASB, have significantly tightened their lending criteria in recent weeks to make it harder and more expensive for first home buyers and investors to borrow more than 90%.

The central bank has been crawling all over the boards and senior management of these banks for months, pressuring them to tighten up again after a burst of competition from the beginning of last year unleashed a surge of lending growth and turbo-charged the supply-constrained Auckland and Christchurch housing markets.

The Reserve Bank is of course right to force a re-tightening, but it may not be enough.

Even the bank acknowledges its proposed 'speed limits' on high loan to value ratio (LVR) lending is no panacea.

But, unfortunately, Spencer ruled out using the bank's 'blunt instrument' of a hike in the Official Cash Rate increase to whack the housing market.

This is where the Reserve Bank risks making the same mistake it has acknowledged making before the Global Financial Crisis and that inflation-targeting central banks all around the developed world made.

They kept interest rates too low for too long because the consumer price inflation measures they were targeting told them there was no inflation problem. That meant they ignored the creation of asset bubbles that could and did burst to devastating effect inside the American and European financial systems.

This is where a peculiar type of schizophrenia has taken hold.

Many central banks have split themselves into two separate parts: one that regulates banks to keep them safe, and one to run monetary policy to control inflation.

They have separate tools and believe the oil of prudential policy shouldn't mix with the water of monetary policy.

The Reserve Bank is still clinging to this schizophrenic dogma that allowed housing bubbles to inflate and burst all around the world.

It's time now for the bank to prioritise financial stability over its inflation target.

As has been shown in America and Europe, the financial carnage from a burst housing bubble is much more damaging in the long term to an economy than a temporary deviation from an inflation target.

The bank should use an OCR hike now to stop this housing boom in its tracks.

It may push inflation below the bank's 1-3% target band in the short run.

But it will help avoid a much more damaging deviation into deflation in the long run if an even bigger housing bubble bursts inside New Zealand's highly concentrated and still foreign-funded banking system.


This article was first published in the Herald on Sunday. It is used here with permission.

We welcome your help to improve our coverage of this issue. Any examples or experiences to relate? Any links to other news, data or research to shed more light on this? Any insight or views on what might happen next or what should happen next? Any errors to correct?

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Try somthing radical Bernard.

Try somthing radical Bernard.  How would it go if we stopped paying tax on interest earned and we paid tax on interest paid.  That would change behaviours !!!!

Why would it change

Why would it change behaviour?
Though if its say 30% and I borrow at 8%, then the Govn's take would be higher this way? ie V  30% tax on 4% a depositor gets? 
Everything else is a tax on profit earned though...Id hate to think of the tax hole opportunities that created.

Yeah, the Productivity

Yeah, the Productivity Commission pointed out that the fact that there is tax on interest earned, means at the end of the day that there is some tax impact on mortgage interest paid. This is one of the things that means that "housing" is not quite as tax-free as some people claim. Council rates is another reason. 

Steven.  Think about this. 

Steven.  Think about this.  Nothing to do with the governments 'take' but the behaviour of individuals.  Using your figures.  What would individuals do.
You borrow money.  Now:  Cash going out at 8%.  Future: interest payments are taxed 30%.  Your cash will be going out at 10.4%.  (Actually it's the bank gets taxed on your payments to it. And bank will put up it's price to you accordinly. Near enough)
You deposit money.  Now: Cash coming in at 2.8%.  Future:  No tax on your interest.  Cash coming in at 4%
Some people might see the light and decide not to be a borrower.  And to be an investor.   Just some people, and not completely, and would take a while to kick in.
But behaviours would change.  You think not ?

The Reserve Banks actions are

The Reserve Banks actions are of assistance in adding additional pressure on central and local government, to deal with the impediments to new affordable supply. The Rating Agencies, IMF and others contributions are helpful too.
It is well understood now the problems are structural ...
The objective should be to get starter housing stock on the fringes for about $1,000 per square metre all up … down from the current $2,500 + per square metre on the fringes of Christchurch and the $3,500 + per square metre all up on the fringes of Auckland.
That means getting rid of the artificial zonal scarcity values of about $500,000 per hectare on the fringes of tiny Rolleston, a million bucks on the fringes of Christchurch and around two million bucks per hectare on the fringes of Auckland.
In addition to this, finance infrastructure properly, along the lines of the Texas MUDs bond financing infrastructure model, by stripping out all infrastructure costs other than roading and financing it on the bond market.
What is required is outlined in more depth within Section 4 of Christchurch: The Way Forward .
You have only got to look at the difference in housing market behaviour between Texas and California at the moment, to see what the answer is.
California bubbles … Texas builds…
There is your answer Bernard.
Hugh Pavletich

How is the risk of default

How is the risk of default with the MUD bond handled?  ie who is held liable in the final instance?
To get to $1000 / sqm how do you take the profit margins out of each clipper along the way? for instance developers want 100% margin, how do we get that to say 25%?

Steven ... it was the

Steven ... it was the economist Milton Friedmann who said "You could teach some people economics for 20 years and they still wouldn't get it".
If it is still incomprehensible to you by now following 8 years of discussion of these issues, since the release of the first Demographia Survey ( ) early 2005, I would suggest with respect that you spare yourself and us the agony of your confusion.
This is simply a "follow the numbers" exercise, by comparing our performance with the normal and affordable North American housing markets.
Hugh Pavletich

You would have to put Bernard

You would have to put Bernard Hickey into that very same category. Calling for higher interest rates will just damage the general economy. Any slow down in house prices will inevitably lead to a big catch up in the future. When will he learn? At least the NZRB has learnt from the failings of Don Brash and Allan Bollard. Interest rates must be viewed in the global context and ours are still to high.

You would have to put Bernard

You would have to put Bernard Hickey into that very same category. Calling for higher interest rates will just damage the general economy. Any slow down in house prices will inevitably lead to a big catch up in the future. When will he learn? At least the NZRB has learnt from the failings of Don Brash and Allan Bollard. Interest rates must be viewed in the global context and ours are still to high.

I have asked Bernard before

I have asked Bernard before what his qualifications are in property and economics.
He has failed to respond to date.
Hugh Pavletich

Exactly, I cannot understand

Exactly, I cannot understand how anyone can be so blind as not to notice how our high interest rates policy throughout the years have led to our third world wages and a million kiwis living outside of New Zealand. The last round of interest rises to 9% decimated our building and construction sector leading to a total standstill in construction. The destruction of 60 finance companies and the loss of $5billion in kiwi savings attributed primarily to high interest rates. All in the foolish attempt to dampen property prices with a monetary policy response. If Bernard has not noticed, property is now making up very rapidly for the lost 5 years and increasingly into the hands of foreigners as they grow richer with their low interest rates and we foolishly get poorer with our high interest rate policies. Dumb. 

Well credentialed there

Well credentialed there Hewey-the-wool-classer
Bernard Hickey
Massey University  1985 - 1989
Agricultural Economics
Maori Studies
A farm boy, who was supposed to grow up to be a farmer or an agricultural economist but stumbled into journalism at Massey University.
Worked for Reuters in Australia, the UK and Singapore, as the business editor for the Dominion Post, the editor of the Independent.
Stints online. A dotcom with the National Times Group in London, Telecom's XtraMSN in New Zealand, and most recently head of digital for Fairfax.
Well travelled with an International Outlook

  Iconoclast … thank

Iconoclast … thank you.
It is interesting how Bernard struggles with urban economics, although he would not be the only one by any stretch of the imagination, as I explained many years ago within …
Housing Bubbles And Market Sense

You may enjoy this excerpt from the above …
An excellent brief article "Perhaps Economists Should Be Picking Vegetables" by Efrain Rojas, outlines the story of his poor parents, who were smart enough to avoid the bubble prices of California - only recently purchasing two houses there with no mortgages. Mr Rojas states –
“It was abundantly clear to them that the housing market was insane and due for a catastrophic collapse, based upon the anecdotal evidence they saw around them i.e. half million dollar homes in places where people were lucky to make $10/hr. If you were an economist and did not see this coming, you should seriously reconsider the value of your education and maybe do something with a tangible value to society, like picking vegetables”.
One would have to wonder if the Woolclassing Course at Lincoln was of more use than the Agricultural Economics one at Massey. I would just be too polite to comment !
There is clearly quite a bit to be said for acrtual market experience, as a development practitioner. We learn best by "doing" I suppose. Or as Oscar Wilde would say "Never let your schooling interfere with your education".

Hugh Pavletich

and yours are what

and yours are what BTW?
certainly nothing in math, no sign of anything technical or scientific, no peer reviewed work.... you have proved that time and time again.

Not that anyone who is an

Not that anyone who is an apologist for the urban growth containment racket ever takes any notice of peer reviewed academic work anyway.......
It is quite possible that Hugh, an old industry practitioner, might just know what he is talking about. It is painfully obvious even after a GFC, that the mainstream "experts" mostly do not have a b----y clue about land economics, and bumbling incompetents from the mainstream of economic beliefs who caused everything in the first place are still in positions of power and influence, while literally none of the people who famously "got it right" in warnings long before the GFC, have got to supersede the idiots in their jobs.
Feast your eyes on THIS list:
Anyone on that been promoted to head the US Federal Reserve, or into the Obama Cabinet? Why not?
Hugh's math about urban land prices has always struck me as exactly the kind of insight we need. The best land economists all are quite clear about this too. Why the mainstream "best and brightest" have to remain so out of touch with reality possibly indicates the extent to which the racket has captured "professionals" of all kinds. 
If you are a highly qualified physicist and you do not understand the math of urban fringe land use conversion, then there is no point expecting anyone to listen to you on the subject of housing affordability just because your science qualification means you are meant to be quite bright. Possibly you couldn't lay drains as well as a low-IQ drain-layer who does it for a living, either. Stick to your specialty and stop wasting everyone's time. 

Thats a list of "academics",

Thats a list of "academics", who may or may not have a bearing on the subject or claims that are made by HughP.  With 7billion ppl on the planet finding a few ppl who have simialr partisan views isnt tha hard.
Point is hughp's cliams have no standing in terms of meeting a standard of rigor that a real peer paper does...
So its politically biased opinion and nothing more.

You just gave yourself away.

You just gave yourself away. Hugh, unqualified apart from "doing it" for most of his life, is "politically biased" - but so are the academics who you dislike......?????
Who are the qualified academics with peer reviewed papers on housing affordability that you are going by, seing you think it is so easy to find support for any viewpoint in this world of 7 billion people? 
In any case, I thought at one time that you "got it", that rationing the supply of urban fringe land allowed the owners of the rationed supply to hold out for windfall "planning gain". I would have thought you would also "get it" about the difference between the impact of upfront fees in new house prices, or pay-as-you-go, on the price of all houses, and hence intergenerational equity.
This should not even need to be a matter of appealing to one's favourite academic references; it is logical, observable, and understandable to anyone with half a brain. What is it that "gets to" you to keep you forever coming back and obfuscating the issue? One can hardly be blamed for assuming you have land banks and/or investment properties, or being a paid troll for someone who has. 

I would have to agree, steven

I would have to agree, steven does seem to have a split personality syndrome. Sometimes he makes perfect sense and then suddenly incomprehensible rhetoric. Scarfie is just drifting in the clouds way beyond my mortal comprehension.

Scarfie is "eclectic" but I

Scarfie is "eclectic" but I do not have a single complaint to make of him refusing to "get" a logical point. Explain something to him that has reality and logic on your side, and Scarfie will "get it". He'll add it to his stock of eclectic knowledge and will not be a pain in the a---- forever and a day recycling insupportable arguments. Mind you I don't come on this forum enough to see much of what he gets up to, but my encounters with him have left me with positive impressions. 

Steven why would the default

Steven why would the default risk of bond holders of MUDs be any different from lenders to our local bodies. MUDs IMHO are just another type of local authority. They are both backed ultimately by local residents and the ability that they have to pay rates.

Because, a) The instrument is

a) The instrument is 100% the impact is greater,
b) as probably is the interest rate, higher.

Brief Information on

Brief Information on Municipal Utility District (MUD) infrastructure bond financing …
MUDs: An Introduction
Allen & Oliver: MUDs ... An infrastructure financing system
Any further information out there most welcome.
Hugh Pavletich

Steven, there is no reportage

Steven, there is no reportage at all of MUD Bond defaults being a problem anywhere. You really should start by finding evidence of such a problem and present it as a legitimate argument if you want to be taken seriously.
People from the USA who work with the MUD system all the time, look at our system and go "W....T.....F.....!!!!!!!! the F---- can that possibly work.....?"
It is interesting if you read the explanation of the MUD system that Hugh links to above, how the Americans have thought through the effects of competing systems and seen the problems that they are avoiding by doing it the MUD way. They specifically mention the effect on housing affordability, the intergenerational equity issue, and so on. 
Bottom line: bible-bashin' gun-totin' redneck hicks are a LOT smarter than we are, regardless of how deluded we are about our "intellectual sophistication". I quite happily lay my reputation on the line with the prediction that as long as the freedom to convert rural land to urban use, and the MUD system, lasts; the affordable "growth corridor" cities of the USA "own" the future of western civ.
Note my comment on the last item......

There is a very good defence

There is a very good defence of the MUD system by a true expert HERE:

  Why is Auckland following

Why is Auckland following the crazy lead of San Francisco ?
The Next Housing Bubble Is About To Pop All Over You - Gawker

There's A Risk Of Housing Bubbles In Some U.S. Cities: Shiller - Huffington Post

… and from Forbes …
Rising Prices Make Homeownership Affordability More Unequal Across the U.S. - Forbes

Please explain to us Bernard, what influence the US Federal Reserve has on the housing market performances of Texas and California ?
Note what Mike Insulmann of Metrostudy has to say regarding housing bubble “triggers” and “fuel” …
Americans Slow Learners About Housing Bubbles
How Housing Bubbles Are Triggered
Hugh Pavletich

  If California isn’t

If California isn’t depressing enough … some more housing horror stories from the basket case of the developed world … the United Kingdom …
'Generation Rent' could cost Conservatives votes warns think tank as home ownership falls to lowest levels since Thatcher | Mail Online
… and the “rent to rent” craze getting underway … where the pack them in like sardines …
Meet the new class of landlords profiting from Generation Rent | Money | The Guardian

The feudal Brits treat migrant workers like trash too …
Blighted by an epidemic of 'beds in sheds’ - Telegraph
… with the courageous UK Planning Minister Nick Boles “exhorting” the landed gentry of the Campaign to Protect Rural England (CPRE) to allow affordable housing to be built …
Video: Nick Boles suffers heckling and walk-outs at stormy CPRE meeting - Telegraph
It’s just going to be a matter of when, not if, that show blows, as the lower classes revolt. The toffs deserve all that’s coming their way.

Hugh Pavletich

California   U.S. Bubble

U.S. Bubble Economy Watch: 

June 26 – Bloomberg (Dan Levy): “Kimberly Boortz began searching for a San Francisco condominium after seeing the heated demand for single-family homes in the city. Potential buyers would ‘elbow their way around’ showings, and only all-cash offers or bids well over the asking price would come out on top, she said. ‘There is insane competition in every part of this market,’ said Boortz… San Francisco’s median house price is poised to surpass $1 million this year after setting a record in May… Buyers have been making down payments of 35% in a market awash in wealth from tech workers and overseas investors, Mark said. Banks are offering loans exceeding $625,000 that are too big for government backing, known as jumbo mortgages, at interest rates only marginally above those for conforming loans… The San Francisco area had the biggest gain in home prices among 20 U.S. cities in the S&P/Case-Shiller index… Single-family house prices in April jumped 24% from a year earlier, compared with gains of 12% of the overall gauge, which was still the biggest advance in more than seven years. The median price for a single-family home sold in the city was $947,260 in May, up 2.7% from April and 32% from a year earlier… It topped the $932,350 record set in 2007… San Francisco condo prices set a record in each of the last three months, soaring 27% in May from a year earlier to a median $881,020… The peak in the previous cycle was $811,170 in March 2008.”

Andrew J ... Thank you for

Andrew J ... Thank you for drawing that important article on the housing lunatic asylem of San Francisco to our attention.
It would be appreciated if you could provide a hyperlink to it.
Hugh Pavletich

Many thanks ...

Many thanks ...

Uninsurable Risks June 28,

Uninsurable Risks

June 28, 2013 posted by Doug Noland
An extraordinarily unsettled quarter ends on a tenuous up note.

June 24 – Financial Times (Alistair Gray and Pilita Clark): “Insurers have issued a rare warning that the speed at which the oceans are warming is threatening their ability to sell affordable policies in a growing number of places around the world. Parts of the UK and the US state of Florida were already facing ‘a risk environment that is uninsurable’
Wonder if Chch is really on limited time, if re-insurance companies simply stop re-insuring, chch is bye bye, as is our housing market btw.

So allow "sprawl" inland,

So allow "sprawl" inland, instead of mandating intensification right in the path of the rising oceans - DUH!!!!
Like it makes sense to ban development in the general vicinity of Bombay Hill and forcibly "intensify" Parnell and Herne Bay. 
Like it ever made sense to intensify on fault lines in Thorndon, on Tsunami paths in Kilbirnie Isthmus, and ban development in the Horokiwi area. 
Low density and dispersion is just sensible disaster impact mitigation policy. It's not even worse for efficiency of travel either; you find me an example in the following data, of high traffic congestion delays in low density cities versus low traffic congestion delays in high density cities.
The exercise will be a very handy little self-education.
Density data here:

Oh great, I will have 5

Oh great, I will have 5 waterfront Mt Roskill Properties in time. Thanks to rising oceans.

Mind you it is well know that

Mind you it is well know that Al Gore owns expensive beachfront property..........

I think its gone beyond

I think its gone beyond hiking now BH...just look at the Fed's "thinking about it" to realise that our RB might well ignite a fire it cant put out.  Walking a tight rope IMHO.

Hugh's analysis is quite

Hugh's analysis is quite correct. Housing affordabilty should be solved at a local level by making the supply of housing elastic. New demand for housing should cause more houses to be built rather than house price rises. The Texan rather than San Francisco solution.
But what should the Reserve Bank do if house price inflation continues to rise? If local housing conditions are getting worse not better. Does Wheeler believe the reassurances from the Beehive that the supply of housing will kick in soon. That with the Auckland Accord, the possibility of special housing areas and Local government speeding up the building consent process there is nothing to worry about.
Can the Reserve Bank make a technical economic decision that housing inflation risks the financial stability of the country. I am sure BIll and John whenever they meet our Monetary Guv will be hinting that is a political not economic decision.
I would not want to be in Wheelers shoes, he has pressure coming from al sides and no easy escape route. The best option is stick to the facts, if he sees a bubble and if it could get so large it endangers our financial sytem then he has a duty to pop it.

Brendon, there is no bubble

Brendon, there is no bubble to pop. House prices are still too cheap. Hugh is correct. If we want to go high rise, apartments anywhere in Auckland cost upwards of $4000 per sqm to buy. Houses in say Mt Eden/Epsom are still only $1900 to buy when you factor in land and building. Therefore in order to dampen prices you have to build in the fringes. If you contune to constrain the MUL then house prices have to reach a price point in order to allow apartment living to be more popular.

As the Productivity

As the Productivity Commission correctly found, the urban land rent curve rises along its entire length due to growth containment distortions. Because the cost of land is higher nearer the urban centre, this has the unintended consequence of inflating the cost of higher density living nearer the centre even more than the cost of fringe McMansions. 
Check out some RE sites for the evidence. Affordable US cities have fringe McMansions for $150,000 and CBD condos for $80,000. Dorkland, or Vancouver, or Portland, have fringe McMansions for $500,000 and CBD condos also for $500,000. 
How clever is this? 

Brendon: From the Jan 2010

From the Jan 2010 OECD Paper “Bird’s Eye View of OECD Housing Markets”:
Para 55. “Another concern is about the ability of monetary policy to thwart the development of a housing bubble without causing widespread damage to the rest of the economy. In a house price boom, prices increase strongly – often at double digit rates – and expectations of future prices are similarly upbeat.
Under these conditions, large policy rate hikes would be necessary to cool housing markets. High interest rates would crowd out sound and socially useful investments.
An additional difficulty for large countries and monetary unions is that housing market developments usually differ across regions or member countries. For example, during the latest housing boom, while prices were soaring in States like Florida or California, they were stagnating in many other parts of the United States. In the euro area, prices were skyrocketing in Spain and Ireland, but declining in Germany. Devising an appropriate monetary policy response to asset price developments under these conditions is not easy.”
Elsewhere in the paper, they suggest that inelastic supply of housing is responsible for this dilemma that central bankers are placed in. 
Our own Don Brash made this complaint when Governor of the RBNZ back in the 1990's. Smart man.

Don man? So he

Don man? So he knew and still he went ahead and wrecked the NZ economy causing widespread pain and destroyed families, created 3rd world wages and set our economic progress backwards?. There should be criminal charges then.

He said what the problem was

He said what the problem was and the politicians didn't listen to him.
Is THIS what he should have done?

Bernard, welcome back from

Bernard, welcome back from the Dark Side; all is forgiven. And I think I can (bold brag I know) confidently predict that the "new" LVR's won't work: I had loan approval authority over many millions worth of mortgages in the 1980's when prudential standards were de rigueur and they stood for next to nothing. A whole industry existed (especially among lawyers 2nd and 3rd rankings) to circumvent them- Family guarantors and all that mess!

So what exactly is an

So what exactly is an interest rate hike? 0.25% or 0.50% OCR increase or lift in floating mortgage rate from say ANZ published rate of 5.74% to 6.25% or 6.5%. Don't think either would make much difference to the appetite to invest in housing in Auckland or Christchurch when the shortage of supply, serious lack of new builds, net migration gain etc are taken into account.
The LVR proposal will only impact on a small sector of the market. A typical Auckland investor couple in the their 50's may have a mortgage free family home worth say $800,000 to $1,500,000 - they could 100% finance the purchase of several rental properties as the LVR is calculated across the entire group of properties against which security is taken. So LVR restriction unlikely to impact on that type of investor - in fact it would assist them to get richer. A recent migrant with all cash will not be impacted at all and a wealthy family assisting one of the kids into a home will still be able to do that with provision of a guarantee. The only people who will suffer under an LVR restriction are first home buyers who do not come from wealthy families and perhaps couples post divorce who each do not have 20% deposit to acquire individual homes once they go their separate ways.
A first home buyer in Wellington with a $35,000 deposit buying a $350,000 home would need to save another $35,000 to buy that same home after the LVR restriction kicks in. There is most probably a panic to purchase taking place right now simply encouraged by the Reserve Bank media coverage of the possibility of LVR restrictions. That in turn is most likely pushing prices higher.
Does anyone seriously think that an LVR restriction or a 0.25% to 0.50% interest rate increase is going to cause a reduction in Auckland house prices when it is unlikely that even 4,000 new homes will be built over each of the next couple of years?

it seems the government both

it seems the government both local and national have serious problems with first time Kiwi owners buying their own piece of NZ. Why else would they be penalising them at every turn? How incompetent can our leadership be?

General Hubbard ... The only

General Hubbard ... The only way to solve the problem of course, is by the Authorities at central and local level ALLOWING (the clowns dont even have to build the stuff ... just get the hell out of the road ) new affordable housing to be built.
To date, they have effectively just BANNED the construction of affordable housing.
This is why it is critically important to focus on the essential structural issues, as I explained recently …
Focus on Restoring Housing Affordability
Hugh Pavletich

At some point you are to say

At some point you are to say some ppl cannot buy otherwise you end up with NINJA loans.

I always say that "home

I always say that "home ownership" policy that does not increase the elasticity of supply of housing is not "home ownership" policy at all, but is "big finance" and "big property" profit increasing policy.
It is "supply" that determines how many people will be "priced out". LVR's and interest rates and subsidies merely determine the price at which they will be priced out, and the level of debt taken on by those not priced out. 
Of course big finance and big property LOVE demand side subsidies and low interest rates and loose LVR requirements in conjunction with inelastic supply. 
BTW I am agreeing with you and hope you see the logic of what I am saying. 

If you understood the

If you understood the leverage that is the LVR then you would realise even a small amount of LVR chnage makes a big impact.
Steve Keen would be worth a read  IMHO.

South Korea is a very

South Korea is a very interesting housing market to study.
Their LVR's have consistently been as tight as "close to either side of 50%" for decades, yet they still have a major problem with young people priced out of home ownership, and bubble price inflation. 
As I say, it is "supply" that determines all this. 
The advantage of having LVR's 50% and even tighter at times, is that national savings tend to offset debt, as there are so many young people trying to save their 50% against a rising target, and some of them never making it. It's definitely put the brakes on marriage and birth rates too. 

Getting pretty excited about

Getting pretty excited about artificial residential rent increases in Christchurch (yawn) …
Rents soar in Christchurch ... Greg Ninness |
…only question … when are they finally going to wake up ? …
Christchurch Council Irresponsible On Housing Issue | Scoop News
Hugh Pavletich

Dear BH The RBNZ wouldn't

Dear BH
The RBNZ wouldn't have to go down this track of raising the OCR if you didn't put out that scare mongering about house price few years ago.  It was going to drop by 40%, then 30% then 15%.  In some ways, you have contributed to the mess we are in now