Finished my first spec 11 days early because of a choice made before closing
1,720 square feet, three bed two bath, single story, small city in the middle of the country where the median is around 350. Sold at 392 with a 26 day marketing period.
Numbers as they landed:
- lot: 48k, cash
- hard costs: 244k, fixed price contract, two change orders totaling 4,100 (both mine, both stupid, a bigger island and a different tile)
- soft costs: 31k including engineering, permits, utility connections, builder's risk insurance, and the survey
- carry: construction loan at a rate I'd rather not repeat, interest reserve funded at closing, total interest paid 14,900 over the build
- sale costs: 20,500 including commission and my share of closing
- net to me: about 30k over ten months on 63k of cash in
What made it work was a thing I did in diligence and almost didn't. Before closing on the lot I paid an engineer 2,400 to do a preliminary grading and drainage review and tell me what the county would require. He came back saying the disturbed area would land just under the stormwater threshold if I kept the driveway to 12 feet and pulled the house four feet forward. That's the whole difference. The lot next door, same size, sold to someone who is now installing underground chambers.
The part that nearly broke it was the HVAC equipment. Ordered late, arrived six weeks after promised, and for a while it looked like I'd close out everything else and sit with a finished house I couldn't get a certificate of occupancy on. My builder found a smaller distributor with the right tonnage in stock at a 900 premium and we ate it. If that hadn't worked I'd have added two months of carry, about 3k, plus a spring listing turning into a summer listing.
What I'd keep: paying an engineer before I own the dirt. 2,400 to find out what the site will cost me was the best money in the deal.
What I'd change: I'd have ordered long lead equipment at framing instead of at rough-in. Nobody told me and I didn't ask.