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 finished modern backyard unit with floor-to-ceiling glass, a lawn and a pool

ADUs and backyard homes

Detached units, garage conversions and junior ADUs, from the city’s plan check to the last coat of paint.

Sample range$180k–$450k
Typical build26–40 weeks

In the price

  • Feasibility check
  • Architect and engineering
  • City plan check
  • Utility connections
  • Foundation and framing
  • Roofing and windows
  • Full kitchen and bath
  • Mini-split heat and AC
  • Finishes and landscaping
  • Certificate of occupancy

Three ways to finish it

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

Standard

Good stock materials

$180k–$260k
For a typical ADU. Yours depends on size and layout.

Upgraded

Semi-custom, stone, better fixtures

$260k–$340k
For a typical ADU. Yours depends on size and layout.

Custom

Custom cabinets, slab, designer fixtures

$340k–$450k
For a typical ADU. Yours depends on size and layout.

Week by week

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

Typical ADU
Sample schedule
  1. Feasibility + design
    Week 1 to week 6
  2. City plan check
    Week 6 to week 15
  3. Site work + foundation
    Week 16 to week 18
  4. Foundation inspection
    Week 18
  5. Framing + roof
    Week 19 to week 22
  6. Frame inspection
    Week 23
  7. Systems + insulation
    Week 23 to week 25
  8. Drywall + finishes
    Week 26 to week 31
  9. Final + occupancy
    Week 32

Questions

Can I build an ADU on my lot?

Most single-family lots in Los Angeles can fit one. We do a free feasibility check from your parcel map and photos, and tell you what fits before you spend anything on design.

How long does the city take?

Plan check in Los Angeles usually takes eight to fourteen weeks. Using a city-approved standard plan can shorten that.

Can an ADU pay for itself?

Many owners rent them out. We’re builders, not financial advisors, so we’ll give you real build costs and you can run the rental numbers with your own advisor.

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.