Bidding a zone conversion project where the 30 month qualifying spend clock becomes the contractor's problem too

Take a 6,000 square foot two story commercial building being converted to apartments under an opportunity zone structure, where the developer needs the qualifying improvement spend to clear a threshold, say just over $700k, inside a 30 month window or the tax structure on the ownership side falls apart. A contractor's budget for that scope might land around $640k of hard cost, with general conditions and fee bringing the total bid closer to $712k, only a couple percent over the developer's threshold. That thin a margin is worth taking seriously, because what counts toward the qualifying spend is a legal and accounting question, not a construction one. General conditions, architectural fees, sitework, parking, and permit fees may or may not count depending on how the structure was set up, and that needs to come from the developer's accountant before the bid is finalized, not assumed either way. The 30 month clock is the other real risk. Utility and electrical service upgrades in some jurisdictions run four to five months from application alone, so the construction schedule needs to be built backward from the deadline with that lead time priced in from day one, not treated as a contingency.