5 rules for unincorporated Lancaster County, Pennsylvania.
Verified from official government sources
Lancaster County sets no accessory-dwelling-unit rule. In Pennsylvania, whether you can add an ADU, in-law suite, or accessory apartment is decided by your city, borough, or township zoning ordinance under the state Municipalities Planning Code. Check your municipality's zoning office.
Lancaster County has no countywide shed ordinance. Shed size, height, and setback are governed by your city/borough/township zoning code. Example: Manheim Township lets a storage shed up to 200 sq ft and 10 ft tall sit within 5 ft of a side or rear line.
Manheim Township Zoning Ordinance, Accessory Building modifications
A nonattached accessory building (storage shed) not exceeding 200 square feet in floor area and 10 feet in height may be placed within five feet of a side or rear property line.
Lancaster County sets no rule on converting a garage to living space. Whether you may turn a garage into a bedroom, office, or apartment — and the parking you must replace — is governed by your city/borough/township zoning ordinance under the PA Municipalities Planning Code.
Lancaster County has no carport ordinance. Setbacks, size, height, and permits for a carport are set by your city, borough, or township zoning ordinance under the PA Municipalities Planning Code. A carport is usually treated as an accessory structure locally.
Manheim Township Zoning Ordinance, Accessory Building modifications
A permanent roofed accessory structure, attached to the principal building, is considered a part of the principal building for all regulatory purposes.
Lancaster County sets no tiny-home rule. Whether a tiny house on a foundation or on wheels is allowed — as a dwelling, ADU, or RV — is decided by your city/borough/township zoning ordinance and the PA Uniform Construction Code, not the county.
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