A one-car garage built for a 1950s sedan rarely fits a modern SUV, let alone two. Before anything else we check how much room the setbacks leave, then decide whether the garage grows wider, deeper or taller.
A garage addition makes the garage you have bigger: a second bay beside a single, extra depth for a pickup, more height for a lift, or a wing for storage or a workshop. Around Boston the most common case is a one-car garage on a postwar ranch or Cape that the family has long outgrown, in towns like Dedham, Waltham, Milton and Newton.
The new part sits on its own frost-depth footing, tied to the old foundation so the two do not move apart. We check the existing slab and walls first, since an old garage with a sunken floor or a rotted sill should be fixed before anything is added. The roof is reframed so the old and new sections shed snow as one.
Zoning is the first question. Many Greater Boston lots have little room left inside the side setback, so an addition may grow back toward the yard rather than out to the side. We measure the lot, check the setbacks for your address, and show you what size fits before any drawing is made. If the lot is too tight for more width, a deeper bay can still add room for storage or a bench.
Garage additions in Boston: common questions
Can you turn my one-car garage into a two-car?
Often yes, if the side setback leaves room. If not, a longer garage for tandem parking can work.
Does the old garage need a new slab?
Only if it has cracked badly, sunk or tipped. We check it during the visit and tell you plainly.
Will the addition match the old part?
Yes. Siding, roofing and trim are chosen to match, and the roof is framed as one line.
How it works
- Free on-site estimate: Call, text or book online. We look at the lot, access and where the garage can go.
- Plans & written quote: Size, layout, materials and price in writing.
- Permits & site prep: We check what the job needs, then prepare the ground and the slab.
- Build & walk-through: Framing, roof, doors and finish, then a walk-through with you.