Concept site Studwell Builders is a fictional remodeling contractor, designed and built by Patrick Bushe to show what I make for remodeling contractors. Fictional, by Patrick Bushe

A bright open living and dining room with wide oak floors

Room additions

Bump-outs, second stories and opened-up floor plans, engineered and framed so the new part looks like it was always there.

Sample range$120k–$400k
Typical build16–28 weeks

In the price

  • Design and engineering
  • Permits and plan check
  • Foundation work
  • Framing and beams
  • Roof tie-in
  • Windows and doors
  • Electrical and HVAC
  • Drywall and flooring
  • Matching exterior
  • Final inspection

Three ways to finish it

Same crew, same schedule, same warranty. What changes is the materials. Sample prices

Standard

Good stock materials

$120k–$190k
For a typical addition. Yours depends on size and layout.

Upgraded

Semi-custom, stone, better fixtures

$190k–$280k
For a typical addition. Yours depends on size and layout.

Custom

Custom cabinets, slab, designer fixtures

$280k–$400k
For a typical addition. Yours depends on size and layout.

Week by week

A typical addition schedule. Yours is built from your bid and updated every Friday.

Typical addition
Sample schedule
  1. Design + engineering
    Week 1 to week 4
  2. Plan check
    Week 4 to week 9
  3. Foundation
    Week 10 to week 11
  4. Foundation inspection
    Week 11
  5. Framing + roof tie-in
    Week 12 to week 14
  6. Frame inspection
    Week 15
  7. Systems
    Week 15 to week 16
  8. Drywall + finishes
    Week 17 to week 20
  9. Final inspection
    Week 21

Questions

Up or out?

Out is usually cheaper per square foot; up keeps your yard. A second story needs the existing foundation checked by our engineer first.

Do we need to move out?

For most bump-outs, no. For a second story, plan on four to eight weeks away while the roof is open.

Will it match the house?

We match siding, stucco texture, rooflines and trim, and we photograph the existing details before we start.

Get a fixed-price bid.

Tell us about the project. We’ll set up a free walk-through, measure everything, and send a line-item bid within a week.

(310) 555-0147
A carpenter marks a cut line on a board with a pencil

We reply within one business day.