Sizing contingency when my framer's price is only good for 21 days
Numbers on the one I'm looking at. Lot is 180k, plan is 2,400 square feet, my best hard cost number is 165/sf so call it 396k. Soft costs I've penciled at 55k. That's 631k all-in before interest. Comps in the pocket are 770 to 790 for similar new construction, so I'm using 780.
Construction loan quoted at prime plus a spread, roughly 9.5 percent interest only on drawn balance, 13 month term. My problem is that two of my subs have written escalation language into their proposals, and the framing bid is only firm for 21 days. I've spent 20 years on job sites so I can smell when a number is soft, but I've never had to carry the money risk myself. How are people actually sizing contingency against a budget where the material line can move after I've signed? Is 5 percent of hard costs real or is that a number people write to make the lender happy?