Home Additions · Cape Cod, MA
Adding on to your Cape Cod home is one of the biggest decisions you'll make as a homeowner. It's not just about square footage — it's about whether the addition feels like it belongs, ties into your existing structure properly, and holds up for the next 30 years in a coastal environment.
Building on the Cape isn't the same as building inland. Local knowledge matters.
I'm Dave Cleary, owner of DC Builders. We've been building additions all over the Upper Cape since 1983. I've done bump-outs in Bourne, second-story additions in Falmouth, in-law suites in Mashpee, and garage conversions in Sandwich. Every single one of them had me on site — not a project manager, not a sub foreman. Me.
The wind load requirements, the moisture management details, the way older Cape Cod homes are framed — all of it matters when you're tying a new structure to an existing one. We've spent four decades learning what holds up here and what doesn't. We know the local building departments in Falmouth, Bourne, Mashpee, and Sandwich. We pull our own permits, and we don't cut corners on the details that get hidden in walls.
DC Builders handles home additions of all types across the Upper Cape.
Room additions — expanding a living area, adding a bedroom, or opening up a cramped back of the house into something that finally works for your family.
Second-story additions — building up when you can't build out. We've added full second floors to ranch-style homes and expanded existing upper floors in cape-style houses.
In-law suites and accessory dwelling units — multigenerational living is increasingly common on the Cape, and we know how to design additions that give everyone privacy while keeping the home cohesive.
Sunrooms and three-season spaces — if you've got a view of the marsh or a quiet backyard, we can help you actually live in it more of the year.
Mudroom and entryway additions — practical, high-traffic additions that protect the rest of your home and add real daily value.
We start with a site visit — I come to your home, we walk around, talk about what you're trying to accomplish and what your budget looks like. I won't give you a number on the spot just to get you interested. I'll give you an honest range and follow up with a real written estimate.
We handle permitting, coordinate with our trusted licensed subs for electrical and plumbing, and build on a schedule we commit to in writing. When unexpected things come up (and in older Cape homes, they sometimes do), we tell you immediately — not after the fact.
We've been building on the Upper Cape since 1983. That's a lot of additions, a lot of families, and a lot of homes that we drive past and still feel good about. Our Google rating is 5.0 stars, and most of our new clients come from people who saw our work or heard about us from a neighbor. That word-of-mouth track record is something we protect on every single project.
One conversation with the owner is worth more than a dozen email estimates from a company you've never met. Call Dave directly.
Call (508) 566-1190 Get a Free Estimate →