
Home Addition & Remodeling Contractor in Pittsburgh
Building Contractors United is a home addition contractor in Pittsburgh and Butler County that builds additions and complete remodels with clear quotes, real timelines and a 2-year warranty.
Building Contractors United is a home addition contractor in the Pittsburgh area that builds additions and complete remodels for homeowners across Butler County, Cranberry Township and the North Hills. Complete remodels are one of our strongest residential services, and because excavation is a core part of our business, we dig and pour the foundation for your addition ourselves instead of waiting on a subcontractor. JT Minarik, our Construction Manager, has been in the field since 2009 and runs every project in person. We handle nearly every trade outside of plumbing, HVAC and electrical and coordinate those licensed trades for you.
Home addition and remodeling services we provide
We build room additions, second story additions, in-law suites, garage additions, whole home remodels and kitchen and bath remodels. Here is what each includes.
Room additions and bump-outs
A room addition adds living space to the side or rear of your home, from a family room or sunroom to a larger kitchen or primary suite. We excavate and pour the new foundation, frame and tie the roof into the existing structure, and match or complement the exterior. Matching an addition to a home on a sloped lot often means stepped footers and retaining work, which we handle in-house.
Second story additions
A second story addition adds bedrooms and baths without taking up yard space. It is a structural project: we evaluate the existing foundation and framing with an engineer, reinforce where needed, remove the roof and build up. We plan the work to keep your home protected from weather and, where possible, livable during construction. Timelines depend on scope, and BCU gives you a realistic schedule with the estimate.
In-law suites and accessory living space
An in-law suite gives a parent or adult child private living space with a bedroom, bath, sitting area and often a kitchenette. We build them as attached additions, garage conversions or finished lower levels with a separate entrance. Accessibility features such as zero-step entries, wider doors and curbless showers are designed in from the start, and we check township rules on accessory living units before design begins.
Garage additions and detached structures
A garage addition adds attached or detached parking, workshop or storage space, with the option of finished living space above. We handle the site work, slab, framing, roofing and finishes. Standing-seam metal roofing, which we installed on a recent pool house build, is a durable option for detached structures. We also build pool houses, workshops and barns.
Whole home remodels
A whole home remodel reworks the layout, finishes and systems of your house in one coordinated project rather than piece by piece over years. We remove walls, relocate kitchens and baths, update structure and insulation, and coordinate new electrical, plumbing and HVAC. One project, one schedule and one crew cost less and disrupt your life less than five separate ones.
Kitchen and bathroom remodels
Kitchen and bath remodels are the most common remodeling projects and the ones where good planning matters most. We handle demolition, framing changes, drywall, tile, flooring, cabinetry installation, trim and paint, and coordinate plumbing and electrical. A clear selections schedule keeps materials on site before they are needed so the job does not stall.
How BCU runs a home addition or remodel
Every residential project follows four steps: Consult, Estimate, Build and Walkthrough.
- Consult. We meet at your home, look at the existing structure and the site, and talk through what you want, your budget range and how you plan to live during construction. We tell you what we see, including anything behind the walls that may affect scope.
- Estimate. You get a free, itemized estimate with realistic allowances. If you need drawings, our design-build approach lets us price the project as it is designed.
- Build. We pull permits with your township, protect the parts of your home we are not working in, and build in a logical sequence. JT is on site and you have one phone number for every question.
- Walkthrough. We walk the finished space with you, complete the punch list, coordinate the final inspection and hand over the warranty paperwork. Our 2-year workmanship warranty starts at completion.
Why BCU for home additions and remodels
- We do our own foundations. Additions start with excavation and concrete, and we self-perform both. That means no waiting on a site contractor and no gap between the people who dug the footer and the people framing on it.
- A Construction Manager on site. JT Minarik has been building since 2009 and runs every project personally.
- Fully insured and PA registered. General liability, workers' compensation and PA HIC #PA193140. We put it on every estimate.
- Honest, up-front pricing. Free estimates with realistic allowances and clear language about what could change once walls are open.
- Two-year workmanship warranty. We stand behind our remodeling work in writing.
- Woman-owned and local. BCU is a woman-owned contractor based in Zelienople, and you can reach our team directly.
Additions and remodels across Butler County, Cranberry Township and the North Hills
A home addition contractor in the Pittsburgh area has to work with the ground as much as the house. Homes in this region sit on clay and shale soils that move with freeze and thaw, and many sit on hillsides. An addition foundation has to be tied to the existing one correctly and drained properly or the two will settle differently. Every township has its own setback, impervious coverage and stormwater rules, and most require permits for additions and for structural remodeling. We handle the paperwork and the inspections.
In Cranberry Township and Mars, much of the housing stock along Route 19 and Route 228 was built during the township's growth over the past few decades and is now at the age where families add space or remodel kitchens and baths. In the North Hills, Wexford and McCandless, older homes on established lots are good candidates for second story additions and whole home remodels because land is scarce and families want to stay in their school districts. In Zelienople, Harmony and Butler, we see more garage additions, in-law suites and detached structures on larger lots along Route 68 and Route 8. If your project grows into a full rebuild, our custom home team can take it from there.
If you need more room or a home that works the way your family lives now, talk to a home addition contractor in the Pittsburgh area that will build the foundation and the finish. Request a free estimate or call (724) 900-4123. We show up when we say we will, we price it honestly, and we stand behind it for two years.
Frequently asked questions
Every project is different. The fastest way to a real answer is a site walk with our team.
(724) 900-4123Get a Free EstimateHome addition cost in Pittsburgh depends on the room type, the foundation your lot requires, whether you build up or out, your municipality's permit fees and your finish level. Sunrooms and single bedrooms sit at the low end; kitchens, primary suites and second stories at the high end.
Western Pennsylvania adds three regional factors: clay and shale soil that affects footings and excavation, hillside lots that need more foundation and retaining work, and older homes that often need electrical or plumbing upgrades to tie in. Because cost depends on the site and the scope, BCU gives a free, itemized estimate after seeing the project.
Building out is usually cheaper per square foot than adding a second story. A ground-floor addition needs a new foundation but does not require removing the roof or reinforcing the existing structure.
A second story addition means taking the roof off, having an engineer evaluate and often strengthen the first-floor walls and foundation, and giving up floor space below for a staircase. It also usually means moving out during construction. Building up makes sense when the lot is small, when setbacks block a ground-floor addition, or when you want to keep the yard. Your lot and zoning usually decide the answer.
Yes. Every home addition in Pennsylvania requires a building permit under the Uniform Construction Code, issued by your municipality or its third-party inspection agency. Most additions also need zoning approval for setbacks and lot coverage.
Requirements and fees vary by municipality. Cranberry Township, Pine Township, McCandless, Hampton and Zelienople Borough each have their own fee schedules and review timelines, so review time depends on the municipality and the project. Expect separate electrical, plumbing and mechanical inspections, and possibly a stormwater review if the addition adds significant impervious surface. Your contractor should pull the permits and schedule the inspections.
How long a whole home remodel takes depends on the scope of the work and the condition of the house, and BCU gives you a realistic schedule with your free estimate. Design, selections and permitting also take time before work starts, and homes that need structural changes, new systems or an addition take longer.
The schedule depends on how much of the house is being opened up, whether the electrical, plumbing and HVAC systems are being replaced, and how quickly finish selections are made. Older homes in the Pittsburgh area often reveal surprises behind the walls that add time. Making all finish decisions before demolition starts is the single best way to keep a remodel on schedule.
Service areas
Ready to start? Get a free estimate.
Tell us about the project in four quick steps, or call us directly. We price it honestly, up front.

