Number 1: Accessory Dwelling Unit (ADU) Builder
on GooglePittsburgh
Acorn Built Homes builds accessory dwelling units in the Pittsburgh area.
ADU builders in Pittsburgh
The 8 ADU builders from Google's results for Pittsburgh, Pennsylvania, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.
Last updated
- Garage conversion ADU
- $61,000 – $153,000existing structure
- Detached ADU
- $153,000 – $408,000new build, utilities
- Prefab ADU
- $122,500 – $306,000unit, foundation, install
- Pittsburgh vs US
- +2%around the US median
Licensing in Pennsylvania. Pennsylvania requires home improvement contractors to register with the Attorney General under HICPA. Philadelphia also licenses contractors.
Number 2: Module
on GooglePittsburgh, PA
Module designs, manufactures and builds modular housing in Pittsburgh, with much of its work done for developers. The company controls each stage from design through factory production and on-site construction, with an emphasis on sustainable building.
(412) 368-3412 4933 Penn Ave, Pittsburgh, PA 15224
Number 3: Block House Residential
on GooglePittsburgh, PA
Blockhouse Residential, run by AZA Builders, builds modular new homes in the Pittsburgh area from a set of modern home plans. Homeowners pick a plan and design selections, with finishes installed at the factory before delivery.
(412) 206-9506 46 Sheridan Ave, Pittsburgh, PA 15202
Number 4: Prime 1 Builders
on GoogleMorgan, PA
Prime1 Builders works in the Pittsburgh North Hills area, including Gibsonia, where it built an accessory dwelling unit for multigenerational living. The project gave a couple and a relocating parent separate living spaces on the same property that tie in with the main house.
(412) 257-0160 510 Millers Run Rd, Morgan, PA 15064
Number 5: Master Remodelers Inc
on GooglePittsburgh, PA
Master Remodelers Inc. builds home additions and ADUs in Pittsburgh, Pennsylvania.
(412) 341-6585 3630 Elm Ave, Pittsburgh, PA 15234
Number 6: How Much Does an ADU Cost in Pittsburgh and Nearby Areas ...
on GoogleLawrence, PA
Across Pittsburgh, Western Pennsylvania and West Virginia, Shannon Staley & Sons designs and builds accessory dwelling units for homeowners. Projects include units for aging parents, rental income and private home offices, and the company publishes ADU cost guidance by type, size and location.
(724) 302-0102 531 Georgetown Rd #204, Lawrence, PA 15055
Number 7: Build Withmd
on GoogleBeaver Falls, PA
Build with MD handles custom residential and commercial construction around Pittsburgh. A project in Lawrenceville combined two home additions with a detached ADU, including a kitchen addition and remodel, a new mudroom and a garage built from CMU block.
(724) 683-7626 740 Constitution Blvd, Beaver Falls, PA 15010
Number 8: Pitell Homes
Pittsburgh
Pitell Homes builds custom and semi-custom homes in Pittsburgh, either in its own communities or on a buyer's lot using established floor plans. It also sells move-in ready homes, including properties in Hampton.
What ADU builders charge in Pittsburgh
In Pittsburgh, a garage conversion ADU typically costs $61,000 – $153,000. Remodeling labor in Pittsburgh runs about 2% above the US median, which accounts for most of the difference from the same project elsewhere.
How to choose between them
- Check the license yourself. Where Pennsylvania or Pittsburgh licenses this work, the licensing board's own lookup confirms a license number in a minute. Do it before you sign, not after.
- Get three bids on the same scope. Written down, split into labor, materials, allowances and anything structural. Most people compare a total against a total and end up choosing between two different projects.
- Ask what is not included. Permits, debris removal, fixture and finish allowances, and repairs after demolition are the four that turn a cheap bid into an average one.
- Never pay a large deposit up front. A deposit to order materials and hold a start date is normal. Half the total before anyone shows up is not.
How this list is ordered
These are the firms from Google's results for "adu builders pittsburgh", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.
ADU builders in Pittsburgh: common questions
Can I build an ADU on my lot?
It depends on your city and state. California, Oregon and Washington have state laws that make ADUs allowed on most single-family lots. Elsewhere it is set by local zoning, so check lot size, setback and owner-occupancy rules with your city first.