NYC kitchen remodel timelines in 2026 depend on three major factors: co-op/condo approvals, DOB Alt-2 filing + inspections, and holiday-season scheduling constraints. Most full kitchen remodels in NYC take 12 to 20 weeks total from early design to sign-off. Co-op review cycles and freight elevator restrictions in Harlem, UWS, Park Slope, and UES can add 2–8 weeks before construction even begins.