In the UK, Australia and Canada you occasionally get Academics who look at raw housing supply and demographic data and (without properly understanding it) claim we have a ‘surplus of housing’. Ian Mulherne of Oxford Economics for example in the UK – and LF economics in Aus.
Another example from Canada Globe and Mail
… what one academic is calling “the housing supply myth,” which is the belief that we need more housing in order to lower costs. It’s an argument commonly used by politicians, industry, and some academics and citizen activists.
“There is an intuitive appeal to that argument,” says Dr. John Rose, who spent the last year on education leave, researching the popular belief that Vancouver has a lack of housing supply. “We understand this idea of supply and demand, intuitively, even if you haven’t taken an economics course.”
However, he has concluded that Vancouver does not have a shortage of housing units. In fact, we have a surplus. And, as anybody in Metro Vancouver knows, prices have not plummeted as a result.
“If we are looking back at the last 15 to 20 years, we have been providing more than enough units of housing – and it’s still unaffordable.
…
Dr. Rose is an instructor in the department of geography and environment at Kwantlen Polytechnic University. He’s been teaching there since 2002. He calls his report The Housing Supply Myth, based on data from the Statistics Canada censuses and the Demographia Survey House Price Data. He also looked at supply in housing markets elsewhere in Canada, the United States and Australia.
“As a resident of Metro Vancouver and observing all this construction around me, I thought: ‘How do we have a housing shortage?’ Maybe I’m missing something, but this doesn’t seem to stick. And this data supports that idea.”
In order to ensure his findings weren’t just a blip, Dr. Rose went back to the 2001 census, covering a 15-year span. He found that for each household added during this period, the region added 1.19 net units of housing. Put another way, for every 100 households that came along, Metro Vancouver added 119 net units of housing. According to census data, there are also 66,719 unoccupied dwellings in Metro Vancouver.
And despite a surplus of housing stock, affordability has significantly worsened – a contradiction to the supply mantra.
“It’s quite the surplus,” he says. …
“The role of the supply argument is, to a large extent, to distract the public and policy makers from action on the demand side, specifically in terms of foreign capital.”
Dr. Rose says the pro-supply camps tend to be divided into those who blame land use constraints, such as the Agricultural Land Reserve (ALR), as limiting outward expansion, and those that argue for upward density, such as towers. Both camps blame government regulations on stifling development and consequently standing in the way of affordable housing.
Demographia, which puts out the Housing Affordability Survey of cities each year, attributes high prices to constraints such as the ALR. In the other camp is industry spokesman and condo marketer Bob Rennie, who has said: “If you have a ‘no tower’ sign on your front lawn, you have no right to speak to your children about affordability … We can’t have low density and low prices … We just don’t have the supply.”
“What they’re implicating is citizen resistance,” says Dr. Rose. “Bob Rennie is very aware he’s advancing an argument that benefits him economically. He acknowledges that. But it’s interesting that it’s an argument picked up by generally well-meaning academics that support the idea of smart growth. I’m sympathetic to that, too. But I’m leery of attributing our high housing costs and the escalation we’ve seen over the last 15 years to an inadequate densification.”
…”Bring it,” he says. “Here’s the data. If you want to argue against it, go ahead. It’s publicly available. And when I did this research, I had my independence. Nobody owns this. I get no sponsorship from any industry, any sector. I’m a free agent.
“I think that’s a benefit of this research. It’s not coming from a school of business that is being funded by the real estate industry, or somebody who’s passionate about densification and smart growth. I think there’s some romanticizing going on, about what the ideal city should look like, and unfortunately it gets sucked into this debate about affordability.
“I’m just saying look at the numbers, and we see Vancouver has plenty of supply.
In the West the rate of increase of new housing supply has to be in excess of the rate of increase in households for demand and supply to be in balance.
For a start there will always be frictional vacancies, houses in testate, constructed but not sold, in the course of sale, second homes , air bnb lets used as hotels etc.
This is important but small (typically around 2-3%, larger in great cities).
However there are bigger factors. What matters for the housing market is the rate of change of houses coming onto the market, as it is housing coming onto the market, not existing houses not on the market, compared with newly formed and existing households entering the market that constitute supply and demand respectively. Where you have an aging population occupying the existing stock longer, or forced to stay in the existing stock because they are looking to downsize and there is nothing suitable to move into then we have a throttle on newly available supply. It is the first derivative of these two factors that govern the changes to supply and demand and drive price. An aging population, and unsuitability of stock for that population is precisely what we have in western countries.
What is more there are many people who wish to form households but who cannot because prices are too high (so called concealed households). A price is always set by the highest underbidder, someone who would have paid (most transparently at an auction) but just failed to secure the highest price. These are households who want to enter the market but can’t. Rising house prices are a signal that large numbers of concealed households exist.
For this reason the rate of increase of housing stock must always be considerably greater than the rate of increase in households. So even though here the academic has concluded 19% constitutes a surplus it is likely that it constitutes a shortage and the rate of increase needed to balance supply and demand needs to be far higher.
For example is Dubai real estate professionals look at key signals such as the number of newly build condos that remain vacant 6 months after completions. Getting down to around 20% there is a shortage and prices shoot up, around 60% there is a glut and the bubble will pop – a healthy figure is around 40%.
Another unique factor about the housing market is that existing households in a housing market area buying a new house will sell or let their old one. This means that even if a new house is high end someone may sell a medium end house to move into it. You then get an affordability effect rippling through the whole market, In housing market areas though with a critical shortage of supply you can get people entering the market simply because of the rising prices and buying them as speculative assets, and builders targeting this very high end speculative market. This produces a perverse effect of high end condos standing half empty often owned by absentee landlords. This doesn’t mean we have a surplus of supply, rather a shortage and the wrong kind of supply being provided, It also means you have to overbuild, control absentee ownership and get the right mix of housing in markets to control prices in such markets.
The housebuilding industry doesn’t stand apart from the rest of the economy. When you have an increase in housebuilding you get a multiplier second order effect from spending by builders, supply chain effects and so on. I call this the housing accelerator. It is one of the reasons why the historical trend in England of building more housing but never enough has made matters worse not better. Cambridge Econometrics from empirical data estimates this effect adds around 10.5% to housing need in England. So also ask when you see houses being built where the builders live. Probably here in Leicester where I live Lithuanian and Slovakian builders living two or three to a room. Try telling them there is a surplus of housing.
The problem we have is you cant pick up a text book and find a rounded treatment of demographic, real estate and economic factors that determine housing demand and supply. Hence you get a lot of one hand clapping arguments that only look at demand or only look at supply. Of course speculation and foreign ownership are important but you only ever get speculation in markets where there is a shortage of supply. Similarly the availability of credit is important but none will ever lend you money for a hugely expensive asset in a market where a surplus of supply is seeing prices collapsing.
So please academics don’t look at the raw household numbers and the raw housing supply numbers. Look at what rate of increase of supply is necessary to keep prices in check compared to the rate of increase in households that wish to form; please don’t look at the raw numbers. If you want to understand how you have to adjust them look for articles on this blog on the MOAN model (Model for Objective Assessment of Need).
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