Accessory dwelling unit companies

Looking for accessory dwelling unit companies in Pittsburgh, PA? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Pittsburgh and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

ADU companies offer end-to-end solutions, often handling everything from the first sketch to the final walk-through. You need these companies if you prefer a streamlined experience where one firm takes responsibility for design, permitting, and construction. They are ideal for homeowners who want to minimize the stress of managing multiple vendors and prefer a turnkey approach to adding a secondary residence to their property.

Frequently asked in Pittsburgh

How much does an ADU cost in Pennsylvania?

What are the rules for ADUs in Pittsburgh?

Pittsburgh has established zoning regulations and building codes that govern the creation of accessory dwelling units. These rules typically address aspects such as lot size, setbacks, parking provisions, and the maximum allowable size for an ADU. A local expert can clarify these requirements for your specific location.

Is an ADU allowed in Pennsylvania?

Yes, accessory dwelling units are permitted in Pennsylvania, with individual municipalities like Pittsburgh setting their own specific guidelines. These regulations aim to ensure ADUs integrate well into existing neighborhoods. Consulting with a professional familiar with Pittsburgh's ADU ordinances is highly recommended.

What are the rules for ADU in California?

California has state-level laws that promote ADU development, but local cities and counties also have their own specific ordinances. These can include requirements for setbacks, lot size, and parking. For California-specific questions, you'd need to consult with professionals in that state.

California has offered various grant programs to incentivize ADU construction, including initiatives that can provide financial assistance. The availability and specifics of these grants can change. If you're looking at ADUs in California, researching current state and local programs is recommended.

What are the disadvantages of ADUs?

While ADUs offer many benefits, potential downsides include increased utility costs for the property owner and the need for careful planning regarding privacy for both the main house and the ADU. Construction can also disrupt your household for a period. Discussing these with a local specialist in Pittsburgh can help you prepare.

Also serving nearby: Akron · Cleveland · Erie · Columbus · Buffalo

All cities in Pennsylvania →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

303,255residents

5,476per sq mile

8ZIP codes served

Serving all of Pittsburgh — population 303,255; about 5,476 residents per square mile across 55.4 sq mi. ZIP codes covered include 15201, 15202, 15203, 15204, 15205, 15206, 15207, 15208.

Neighborhoods served in Pittsburgh: Shadyside, Squirrel Hill, Lawrenceville, Oakland, Downtown Pittsburgh — and every surrounding area.