Typical Phases & Durations
A well-run attic conversion in New York City usually follows seven phases: (1) preconstruction (survey, existing conditions, filings) 2–4 weeks; (2) permitting & approvals 2–8+ weeks depending on scope and reviews; (3) demolition & discovery 3–7 days; (4) structural/framing & dormers 1–3 weeks; (5) rough MEP (electrical, HVAC, plumbing) 1–2 weeks; (6) insulation & air sealing with inspections 2–5 days; (7) drywall, millwork, finishes, commissioning 2–4 weeks. Historic districts, custom millwork, or complex roof geometries can extend these ranges.
Schedule Controls That Work
Create a milestone map tied to inspections (framing, rough MEP, insulation, final). Lock product selections before filing—windows, custom stairs, fixtures—because these items drive lead times. Maintain a two-week look-ahead so trades are sequenced and materials on site. Require daily photo logs, a live RFI/submittal register, and a change-order ledger so scope shifts are captured early, not on punch week.
Risk Buffers & Procurement
Add buffers for DOB reviews, special inspections, and long-lead items. Release shop drawings early and approve finishes in mockups to avoid rework. Don’t book drywall crews until insulation inspections are confirmed; don’t schedule final paint until HVAC startup and trim are complete.
Use our NYC Attic Remodeling Service timeline checklist to map milestones, approvals, and delivery dates into one integrated schedule.