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Vol. I ·California ADU Desk ·Licensed · Bonded · Insured ·CSLB #1098432 ·BBB A+ Accredited ·120+ ADUs Delivered ·Starting $250K ·10–16% ROI ·Los Angeles ·Bay Area ·Vol. I ·California ADU Desk ·Licensed · Bonded · Insured ·CSLB #1098432 ·BBB A+ Accredited ·120+ ADUs Delivered ·Starting $250K ·10–16% ROI ·Los Angeles ·Bay Area ·
Plate № 07 · 2025 · Case Study

Culver Conversion

Culver City

Studio-and-bath conversion with a steel garage door re-used as a folding wall.

Type
Garage Conversion
Size
480 sq ft
Cost
$195K
Permit-to-CofO
7 mo
Plate № 07Culver Conversion, Culver City

01 — Brief

The brief.

Studio-and-bath conversion with a steel garage door re-used as a folding wall.

The owner came to the studio with a 480 sq ft program and a hard cost ceiling. We responded with a fixed-fee feasibility document inside one business day, then locked the contract at $195K and delivered the Certificate of Occupancy in 7 mo.

Architecture, structural and Title 24 engineering, plan check management, and construction were all handled in-house under a single P&L — no coordination tax, no finger-pointing on corrections.

02 — Cost

Where the $195K went.

Allocation derived from the contract budget and reconciled against the studio's published methodology — see the full cost breakdown for category-by-category methodology.

  • Soft costs

    $23K
    Share12%

    Design, structural + Title 24 engineering, plan check and city fees.

  • Site & utilities

    $27K
    Share14%

    Excavation, foundation, sewer/water taps, sub-panel and trenching.

  • Hard construction

    $129K
    Share66%

    Framing, envelope, MEP rough-in, finishes, fixtures and appliances.

  • Contingency held

    $16K
    Share8%

    Reserved for unforeseen conditions; unspent balance returned at close.

03 — Timeline

7 mo, four phases.

The breakdown below tracks the actual permit-to-CofO calendar. Read more about the studio's standard schedule on the process page.

  1. Phase 01

    Feasibility & design

    8 wk

    Site survey, schematic design, structural concept, fixed-fee proposal.

  2. Phase 02

    Plan check & permit

    8 wk

    LADBS plan check, corrections cycle, school + utility fee clearance.

  3. Phase 03

    Construction

    12 wk

    Foundation, framing, envelope, MEP rough-in, finishes and fixtures.

  4. Phase 04

    Inspections & CofO

    3 wk

    Final inspections, punch list, owner orientation, Certificate of Occupancy.

04 — Neighborhood

Culver City.

Culver City sets the constraints for this build — setbacks, mature-tree protection, and the rhythm of the surrounding street frontages all shape the massing. The garage conversion reads as quiet from the curb and generous inside, which is the brief we hold to on every conversion we deliver in the area.

See the city desk for Culver City

05 — Field notes

What we'd repeat — and what we'd revisit.

First-hand notes from the project lead, recorded at closeout. Published as part of our standing commitment to ship lessons, not just photos.

  1. Repeat

    Re-use the existing slab

    Salvaging the original slab on this garage conversion cut roughly two weeks off site work and kept demolition under one container. We'd specify the same scope verification on day one for any conversion of this footprint.

  2. Revisit

    Order long-lead finishes earlier

    Two finish materials arrived inside the punch-list window, which compressed final inspections. We're now placing finish POs at the start of construction on builds of this scope.

  3. Owner brief

    Allow one design review per phase

    Owners who held a single, prepared review per phase — feasibility, plan check, construction, closeout — kept the schedule and budget inside the contract. The reverse pattern (frequent informal changes) is the most common cost driver we see.

06 — Plates

From the field.

Three details
Massing — Plate № 07.1
Envelope — Plate № 07.2
Interior — Plate № 07.3