if the house don't fit, you must acquit

When we were contemplating making an offer on the lot, we asked for and received from our agent a list of recent sales in the neighborhood. I converted that table into an Excel spreadsheet and began to do a little cross-plotting. Note that this information represents home sales in the neighborhood over the past two years and not the full population of homes. There are homes in the hood worth more, and there are homes worth less, and there are bigger and smaller homes. Nonetheless, this is real sales data that seems to be a pretty good representation of value in the neighborhood.

Since we were looking to do a 2,500 square-foot home at a cost of b$100 (see http://austincubed.blogspot.com/2011/01/thats-bunch-of-b.html for an explanation of what b$ means), we generated this graph to see how our planned budget compares to recently sold homes in the hood (click on it to make it larger if you need to). As it turns out, our goals fit quite well with the data (and the neighborhood).

First, take a look at the horizontal axis. Setting aside the outlier at b$25 (that house must have been full of dead raccoons when it sold), home sales have ranged in price from about b$35 to b$115. Thats quite a range, but the good news is that if we stick to budget, we havent built the most expensive house in the neighborhood. Developer rule no. 1 is to never build the most expensive house in the hood. Thats doubly important for us because our lot is not perfectly located.

Now take a gander at the vertical axis. The square footage of these homes ranged from 1,500 to a little over 3,000. Our initial goal of 2,500 (the house has crept to just north of 2,900 now) fits in as well.
Each black dot represents a house of a certain square footage that sold at a certain price. You may notice that although there is a mosquito swarm of dots, the whole batch of them tends to slope upwards to the right. Thats to be expected: Larger houses tend to go for larger prices. However, theres a great deal of spread among these dots. For example, houses that have about 1,500 square feet sold for between b$40 to b$75. This is probably a reflection of whether or not the house had been updated (most of these homes were built in the 1950s) and where the house was in the neighborhood. A crappy house next to the creek is probably comparable in price to a moderately updated house in the interior of the neighborhood.

Ive drawn a vertical line on the graph up from our price point (b$100) and see that houses at that price point generally have 2,250 to 3,000 square feet. Thats in our ballpark. Say, for example, we were insistent on building a 1,500 square foot home at that price point. You can see that we would be way outside (35% higher) the going price for a similarly sized home. In that case, it could be a struggle to sell that house if we needed to.

The other thing to consider is how much you spent on the lot relative to your overall budget. We spent about b$28 on the lot. That gives us b$72 to spend on building the house. Banks generally want to see you spend two to three times the lot cost building the house. Were at 2.6 with this lot. If youre building out in the boonies, your lot cost is probably a lot lower than this and this two to three times rule doesnt apply. But if youre building in town, it seems to be a good rule of (hammered) thumb.


  1. Um, the dead raccoon house is probably mine (which we tore down and rebuilt). And yes, it probably was full of dead raccoons.

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  3. I see that you are! Rumor has it you have geothermal. Would love to chat with you sometime about that...

  4. Happy to. Feel free to e-mail me at greenhousegoodlife at gmail dot com.