McComsey Builders
Licensed in Pennsylvania (PA015145)
Andersen Certified Contractor
Family-owned since 1986
Accessory Structures
The buildings we put on your property aren’t generic. They’re the structures that finish a property: the car barn for the cars you’ve been collecting, the indoor court your kids practice on every winter, the pool house that turns the backyard into the place everyone wants to be on a Saturday. Every one of them is built intentionally for how you plan to use it.
We’ve been building these structures across Chester County and the surrounding areas for forty years. Some of them are highly engineered. A humidity-controlled barn for antique cars. A basketball court built to exact college specifications. Others are simpler. Every one of them gets the same level of attention, because they’re going on your property and they need to last.
We treat the outbuildings the same way we treat the home. Designed around the people who’ll use them.
A garage that fits the cars you drive today and the cars you’ve been waiting to bring home. We’ve built humidity-controlled barns for antique collections, multi-bay garages with attached workshops, and detached structures that look like they’ve always been on the property.
Indoor facilities built around the way you play, train, or practice. Basketball courts, golf simulators, home gyms, batting cages. Each one engineered for the specific clearances, dimensions, and structural demands of the activity inside.
Horse barns, indoor riding rings, and the support buildings that make a working equestrian property function. We bring in trade partners who specialize in equine construction and design around the animals, the trainers, and the daily routine.
A pool house designed so nobody has to trek back to the main house. Full kitchens, changing rooms, indoor and outdoor showers, bathrooms, and covered seating that turns the pool deck into a place your family lives on summer weekends.
A workshop, an equipment building, an RV or boat bay, a hobby space. Pole barns are post-frame buildings, which means they’re framed off heavy posts set on piers instead of a full foundation and stud walls. That gives you a wider open interior, tall ceilings, and oversized doors without the cost or complexity of traditional framing. They go up faster than a conventional garage, cost less per square foot, and can still match other buildings on your property.
A room you can use year-round. Properly insulated, properly conditioned, and finished to match the rest of your home. The morning coffee spot, the reading room, the place everyone drifts to on a Sunday afternoon. We have several of these in the pipeline at any given time.
Custom Accessory Structures Projects
These are a couple of the recent accessory structures we’ve completed. Click any one to read the full story.
The McComsey difference
Our name has been on the trucks since 1986 — and on every project we’ve ever built. Here’s what that means when it’s on yours.
We’re boutique by design. Every home and every kitchen is one of one. We start by sitting down with you, sometimes literally on lawn chairs in an empty house, and we draw cabinets specific to how you cook and gather. When trees come down on your property, we mill them into the floors, beams, and counters of your new home.
You’ll get a JobTread login with daily field reports, photos, the live budget, every file, and a direct line to our team. Weekly walk-throughs happen on site. You see what we see. Our kitchens come in within 5% of the original budget, and we hand you the keys when we said we would.
Bob and Mike took over from their dad, and the company they are building looks like the one they grew up around: tight communication, in-house cabinetry, a trusted bench of architects and trade partners, and a small team that does serious work. The McComsey name is on every job, and we treat your home like it is our legacy too.
Process
We created six clear steps so that once we start building there aren’t surprises. We take our time getting the budget right so the build can move fast and we limit disruption to your life.
It starts with a conversation. We ask who sent you our way, whether you have plans yet, and the kind of budget you’re working with. The goal is to make sure we’re the right team for what you have in mind before either of us spends another hour on it.
We come out to the property, walk the space with you, and review your plans if you have them. If you don’t have plans yet, we take photos and talk through the scope of work. You get the benefit of forty years of doing this work, telling you straight what will and won’t work and how a renovation or addition really comes together.
We send the plans out to our trade partners, scope every piece of the job, and on bigger or more complex projects, bring them back to the property for a second walkthrough. Their input is what gets us to a real, line-item budget.
We take the trade partner proposals, fill in anything missing, and build out a detailed Excel budget with specific line items. Then we sit down with you and walk every single line. You see why each piece costs and why, what’s included, and where there’s room to flex. By the time we're done, we're all reading the same numbers on the same page.
Once the budget feels right and we agree on a timeline, we lock it in as a signed approved order in JobTread. That's your starting point. As real-life decisions and changes come up along the way, every cost change gets documented against that baseline, so nothing’s ever a surprise.
Before we break ground, we introduce you to the people who’ll be running your project day to day. That means Mike, Evan, and your field lead. You’ll get their phone numbers, so that you know who to call, and any one of us is reachable when you need an answer.
The buildings we put on your property are built around what you’ll do inside them. That’s where every accessory structure starts for us.
Before we draw anything, we sit down with you and ask how you’ll use the building. Where do the cars need to fit? How tall does the ceiling need to be for a basketball court? How will the horses move in and out? Where do you want the family hanging out on summer weekends? The building flows from those answers.
A college-spec basketball court isn’t a guess. A humidity-controlled car barn isn’t either. When the structure has a specific purpose, we do the back-office work, the spec sheets, the engineering, the calls to the people who know, so the building does exactly what you need it to do. That kind of detail is what separates a building that works from one that almost does.
Accessory structures only work if they belong on the property. We work with your architect on the proportions, materials, and roofline so the building looks like it was always there. When you pull up the driveway five years from now, it should still feel right.
Our network
Matched to your taste, budget, and the kind of home you want to build.
Architecture & Design
Most accessory structures benefit from architectural input. We don’t draft in-house, but we have long relationships with architects across Chester County, and we’ll match you with the right partner for the kind of structure you want.
FAQs
Don’t see what you’re looking for? Contact Us!
Custom garages and car barns, basketball courts, horse barns and indoor riding rings, pool houses, pole barns, and sunrooms or four-season rooms. If it goes on your property and it isn’t the main house, we’ve probably built one.
Yes. We’ve built humidity-controlled car barns for antique collections and basketball courts built to exact college specifications. When the structure has to perform, we do the back-office research to make sure every detail is right.
It depends on the building. A pole barn or a straightforward garage can move quickly. A horse barn with stalls, a tack room, and an indoor ring takes longer. A basketball court with custom flooring and proper engineering takes longer still. We give you a realistic timeline before you sign.
Most accessory structures do. We don’t draft in-house, but we’ll match you with an architect from our network who fits the project and the property.
Yes. Whether your home is a 1900s stone farmhouse or a recent custom build, we work with your architect on materials, proportions, and rooflines so the new building belongs on the property.
Testimonials
From the families we’ve built for, in their own words.
What we build
We bring the same attention to every project — from first walkthrough to handed-over keys.
Start a conversation
The car barn, the court, the horse barn, the pool house. Tell us what it's for, and we'll figure out what it takes.
