PA HB2185

Requires Pennsylvania municipalities to allow duplex, triplex, and quadplex housing as permitted uses by right on any lot where single-family homes are allowed, with applicability based on population thresholds (5,000+ residents for duplexes; 10,000+ for triplexes; 20,000+ for quadplexes) or population density thresholds (300-500 residents per square mile).

Prohibits municipalities from imposing zoning, subdivision, or design regulations on 2-4 unit housing that are more restrictive than those for single-family homes, including bans on owner-occupancy requirements and minimum parking mandates.

Mandates administrative approval of compliant applications within 60 days, with automatic deemed approval if no decision is made; prohibits requirements to appear before governing bodies or boards for additional approvals.

Bars municipalities from requiring applicants to dedicate land or pay fees for parks, provide transportation impact analyses, or pay impact fees unless directly related and proportionate to a compelling governmental interest.

Takes effect 180 days after enactment; preserves municipal authority over sewer/water access, building codes, stormwater mitigation, and historic preservation regulations.