Following yesterday's post about the most expensive home in Brooklyn's Dumbo, Jed Bryne of Oak City CRE fame shot me a note asking about the typical land multiple that developers need in Canada in order to make a project feasible. In other words, if your land cost is $X, what multiple on this would your top line number need to be in order to have a project? And he mentioned that in North Carolina, he often sees multiples in the range of 3-5x the land acquisition cost.

My initial response was that we don't typically look at this metric. Many years ago, the rough rule of thumb for new condominiums here in Toronto used to be 10x the land price per buildable square foot. So if you were buying development land at $100 per buildable square foot (calculated as land price divided by the total gross floor area of the project), then you likely needed to sell your condominiums for somewhere around $1,000 per square foot.

On some level this can be a useful metric, because it allows you to quickly tell if a parcel of land is too expensive. And in some situations, it might allow you to compare sites/markets. If you have two different markets and land at the same $X price pbsf, but one requires a 10x multiple to be feasible and the other a 5x multiple, then it tells you something about the cost structures of these two markets. Construction costs probably won't vary all that much (assuming similar builds), but project timelines, development charges, and many other things sure can.

But again, this isn't a number that we typically care a great deal about.

There are a lot of variables in a pro forma and the "required" multiple can change overnight. Maybe it's 10x today, but then development charges go up by 49% and now you need an even higher multiple in order to make the project feasible. So for us, the salient land number is the price per buildable square foot. What is the price per pound of development density? And the way you determine if you have a reasonable number is by doing a residual land value calculation.

The most expensive home in Brooklyn's Dumbo neighborhood is currently under contract and is expected to close in the next few months (at least according to the WSJ). It is a 4,270 square-foot penthouse, with a 500 square-foot terrace, that occupies the full top floor of Olympia Dumbo.

The asking price / contract price is $17.5 million, which works out to be about USD 4,098 per square foot (or CAD 5,486 per square foot based on the exchange rate right now). Based on this price per pound, an equivalent 600 square foot suite would cost you about CAD $3.3 million.

The land was purchased in 2018 for about $98 million. I don't know what the total GFA of the building is, but it does have 76 residences, so that works out to about USD 1,289,473 per suite (or CAD 1,726,624 per suite), for the land cost alone.

This should give you an indication of what the end suite pricing would need to be to make this development feasible, and likely also speaks to its average suite size. New York City tends to build much bigger suites. Certainly compared to here in Toronto.

Also, notice that I didn't say unit?

Let's say that you were comparing and thinking about buying two different pieces of development land. Both are about 25,000 square feet in size, but one is priced at $5 million and the other is priced at $50 million. If you were to calculate how much you were paying per square foot of actual dirt, you might conclude that the $5 million parcel is the cheaper one.

But as we have discussed many times before on the blog, the value of development land depends on what you can build on top of it. So what matters more is the price per buildable square foot. And to calculate this, you simply divide the purchase price by the allowable gross floor area (GFA) on the site (or, in many cases, the GFA that you believe is likely achievable on the site).

For example, if you could build 50,000 sf on the $5 million parcel and 500,000 sf on the $50 million parcel, both sites would have a price per buildable square foot of $100. This makes them, in theory, equal, assuming all other things are equal. That said, one could argue that 50,000 sf is maybe too small of a build, and so the $50 million lot is actually a better buy because you can hope to achieve some economies of scale.

Of course, if you could build even more than 500,000 sf on the one lot, then your price per buildable square foot would come down even further and that would make it the more attractive site (again, assuming all other things are equal).

There are a lot of other details to consider when evaluating a development site. Maybe the $5 million one actually has a bunch of environmental contamination that will cost you an additional $5 million to clean up ($10 million in total costs). In that case, your price per pound would actually be double the other lot, assuming the other parcel doesn't have any contamination or other factors that might impair value.

Permitted uses also greatly affect value, with residential often being the most valuable kind of urban density. And so this is ultimately why you need to create a full and detailed pro forma in order to properly evaluate a new development opportunity. But even before you get to that stage, you can tell a lot with just the price per buildable square foot. If you know the market, you'll usually know right away if it's too high or if it's an opportunity that may be worth exploring.