Standardize Scope, Specs, and Assumptions
Ask every bidder to price the same drawing set, finish schedule, and allowance table. Require line items for structural work (sistering joists, dormers), insulation/air sealing, HVAC, electrical, drywall/paint, flooring, millwork, and waterproofing. Provide fixture counts and model targets (or clear allowances) so quality isn’t quietly downgraded to meet a number.
Clarify Exclusions and Unit Rates
Make bidders list exclusions (e.g., asbestos abatement, panel upgrades, special inspections) and include unit rates for common discoveries—per linear foot of framing repair, per recessed light, per square foot of membrane. This lets you forecast realistic upside without guesswork.
Schedule, Lead Times, and Risk Buffers
Compare procurement plans for windows, stairs, and custom millwork—these drive timelines. Confirm contingency percentages (10–15% typical for pre-war structures) and payment milestones tied to inspections rather than arbitrary dates.
Use our homeowner checklist to normalize bids and pick best value on the NYC attic remodeling service page.