Marshall Loeb
Analyst · KeyBanc Capital Markets
No, I think you're -- I still think as we touched on it, I think construction prices will moderate just because more people will pull back on development. With the land and I guess it's all not equal, but some of the land we acquire, it's measured, and we'll have it tied up for a long as we can prior to closing, as long as the seller will work with us.
And then even then, some of it we close and if it's a new park, it could be a year or a little more before we're in the dirt and really start going vertical with construction and things like that, getting the kind of the infrastructure in place.
So that gives us confidence on some land that let's go ahead and acquire it by the time we're ready to build on it. And that's always -- we've said that's the one item for development, we can't order. And it's incredibly -- I think land is incredibly tight in a number of our -- most of our markets now. That's one thing that's really changed over the last 5 years is just how hard -- I mentioned Dallas earlier, Austin, Atlanta, Tampa, any number of our markets were how much -- how hard it is to find land.
Development yields have hung in there, thankfully. Cap rates probably have come up. But last -- using last year, for example, which is -- probably feels like 10 years ago, but I think our average development yield was at 7 and probably call it market cap rates 3.5. So we're obviously not a merchant developer, but that is 100% profit margin.
So we felt like there's room even if cap rates come up a little bit and yields come down if we're making 50%, 60% kind of value, that's a lot of NAV creation for our shareholders and then a lot of just good solid long-term assets incremental FFO. So we're still managing through that. And then if it helps, as we underwrite on our developments, we also, compared to some of our peers, probably more private than public, we underwrite to current market rents, so we don't forecast rents, which I know some of our -- look, we -- by the time we deliver the buildings and are actually leasing them up often so late that rents can be 10% to 20% higher.
But I always felt like that's a slippery slope, and we don't want to start projecting rents in the future. So on any number of cases, too, what we're actually delivering and leasing up has been a higher yield, thankfully than where we're using today's construction prices because we'll have that locked in and today's rents. And in most cases, we can do a little better than that. We've always targeted 150 basis point premium for development over current market rents, and we've been exceeding that by a wide margin and really looking at return on cost kind of as a second metric. So development yield is still -- it's the most attractive use of our capital.
And within our parks, oftentimes, it's internal demand or it's someone across the street needing that space. So if you look back in hindsight, I'm doing this from memory, which is dangerous. I think it's -- of our last 22 buildings that have rolled into our portfolio, 21 have rolled in at 100%. So if I were -- I would push myself and say, "Hey, we should have done more buildings than that if you get making those kind of returns." So that's yesterday's news, but as long as we're building buildings and we are leasing up and we're getting those kind of profit margins and creations and value, we should kind of keep on that path until the market slows down or tells us something different than it is today.