Landmark Review vs. Standard DOB Permits
In New York City, homes inside landmark or historic districts require Landmarks Preservation Commission (LPC) review for exterior changes in addition to Department of Buildings permits. For attic remodels, that commonly implicates dormers, skylights, roof windows, roof cladding, and any change visible from the public way. Interior-only work may be faster, but any element that alters the roof profile or is visible from street level enters the LPC’s purview.
Design Strategies That Win Approval
Match the neighborhood scale and character: keep dormer proportions traditional on street-facing slopes; push larger apertures to rear or less-visible planes; select historically sympathetic materials (slate-look shingles, metal profiles appropriate to era). Set skylights back from the eave and align with rafters to minimize visual impact. Provide sightline studies (street mockups, axons) to demonstrate limited visibility.
Submission Package & Coordination
Bundle a clean set: existing/proposed elevations, roof plans, sections through dormers/skylights, material samples, and a photolog with key viewpoints. Coordinate LPC comments with DOB drawings so changes propagate everywhere—mismatches cause re-reviews. If structure changes (headers, rafters, collar ties), include stamped calculations and details; if energy assemblies change, note R-values, vapor control, and air barrier continuity on the same sheets.
Phasing & Procurement
Sequence procurement around reviews: order long-lead items after LPC sign-off; keep finish choices with flexible lead times until permits are issued. Lock shop drawings for dormers and windows early to avoid dimension drift during review.
For homeowner checklists and sample LPC-ready packets aligned to roof work, see our attic remodeling permits in NYC guide.