The part homeowners underestimate is below grade. Footings are poured below the local frost line, 42 to 48 inches in Massachusetts, so the new structure does not heave when the ground freezes and thaws. That footing and foundation tie-in is where the addition physically joins your existing house, carrying its own load independently while reading as one building. Footings are inspected before backfill, because once the concrete is buried there is no going back.
Above that, framing goes up and the roof tie-in begins, the point where the new roof plane meets the old one, flashed and sealed with ice-and-water shield so meltwater cannot track back under the shingles. Headers and beams over new openings are sized to the actual structural load using LVL or other engineered lumber where spans require it. Then rough-in runs electrical, plumbing, and HVAC inside the open walls before they close. Insulation meets 780 CMR energy code, framing lumber reads under 19 percent moisture before drywall goes up, and habitable rooms receive properly sized egress windows. Those are not upgrades; they are what passing inspection requires. You can review the full scope of our general contractor services or explore our home renovation work to see how additions fit into a broader project.
The Scope of the Work
Design and drawings, permitting, foundation, framing, roof and siding tie-in, rough mechanical, insulation, drywall, and standard interior finish-out.
Expanded Living Space
