Cornerstone BuildersLicensed General Contractor
Our Services

Home Additions

When you love the street but need more house. Additions engineered, permitted and built so well the seam disappears.

Additions we build

  • Primary suites and bedroom wings
  • Family room and kitchen bump-outs
  • Second-story additions
  • In-law suites and ADUs
  • Garages - attached, detached and with rooms above
  • Sunrooms and covered porches

The part that makes or breaks an addition

Anyone can build a box next to your house. The craft is in the tie-in: foundations that meet, floors that align without a step, a roofline that flows, and siding blended so nobody can point to where old ends and new begins.

We handle the full approval chain - survey, setbacks, engineering, permits and inspections - and give you a fixed contract price before ground breaks.

Common questions

Addition or move?

The honest math: an addition wins when you like your location and lot. We'll give you a real number so you can compare it to real listings.

Do we have to move out during construction?

Almost never. The addition goes up outside the wall first; we break through at the end, and the messy weeks are short.

How long does an addition take?

Design and permits typically 1-3 months, construction 2-4 months depending on size. You get the full timeline in writing.

Love the street? Keep it. Grow the house.

Plan my addition