Norwalk, CT Building Setbacks & Zoning: Structure Height Limits (2026)

Article 90's general height provisions, Code § 118-810, set several fixed numbers that apply on top of the district-specific height and bulk schedule. Under § 118-810H, an accessory building in a residence zone may occupy the required rear yard up to a height of 15 feet, measured from the average finished-grade elevation to the highest point of a flat roof, or to the mean level between the eaves and ridge for any other roof type; that footprint still counts toward the zone's maximum lot coverage.

Section 118-810K creates a stand-alone exception letting a church, school, public library or public museum reach 50 feet in a residence zone, well above what a residential building could otherwise build to. Section 118-810L allows a parapet wall or cornice to extend up to 3 feet above the applicable height limit without being counted as a violation. Separately, § 118-810J exempts specific rooftop features (church spires, belfries, cupolas, flagstaffs up to 36 square feet, water tanks or towers, standpipes, mechanical penthouses and bulkheads) from the height provisions entirely, though mechanical penthouses must be set back at least 10 feet from the roof's extremities.

Section 118-810A ties all of this together: no existing building may be altered, enlarged or rebuilt except in conformity with these height regulations, and no lot may be reduced so that required yards or open space fall below the prescribed minimums.