ADU rules in Bucks County, PA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
ADU regulations set by individual Bucks County municipalities. No county-level ADU mandate. PA MPC (Act 247) allows but does not mandate ADUs. Interest growing in Bucks County for multi-generational housing. Zoning officer verification required in each township.
Bucks County does not have a county-level ADU policy. Accessory dwelling unit regulations are determined by each municipality's zoning ordinance under the PA Municipalities Planning Code (Act 247), which allows but does not mandate ADUs. There is growing interest across Bucks County in ADUs for multi-generational housing, but adoption varies widely. Some municipalities may allow guest suites or accessory apartments as conditional or special exception uses, while others do not permit separate dwelling units on single-family lots. The Bucks County Planning Commission encourages municipalities to consider housing diversity in comprehensive plan updates. PA has no statewide ADU mandate. Interested residents should contact their township zoning officer.
Varies by township — unpermitted dwelling units are zoning violations.
Bucks County, PA
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Bucks County, PA
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Bucks County, PA
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See how Bucks County's adu rules rules stack up against other locations.
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