ADU Drafters in Los Angeles

ADU Drafters vs ADU Architects vs Design-Build Teams

Three categories of professionals can produce ADU drawings. The differences matter for cost, speed, and quality of the buildable result.

ADU Design Build: What It Means and Why It Matters

ADU design build is a project-delivery model where one firm handles both the design (drafting, engineering, Title 24) and the construction. It contrasts with the traditional “design-bid-build” model where you hire an architect, get plans, then send those plans out to bid to separate contractors.

Design-build dominates ADU construction in LA for three reasons:

• Plans are drawn to be built, not just permitted. Drafters know what their own construction crews can install on budget. No “looked great on paper but cost $40k to actually construct” surprises.
• Single point of accountability. When something goes wrong, there is no finger-pointing between architect and contractor. One firm owns the outcome.
• Faster timeline. Design, permitting, and construction-prep run in parallel rather than in series. Months of calendar time disappear.

What Goes Into a CCS ADU Drafting Package

A complete, permittable ADU plan set in LA includes:

1. Site plan – lot dimensions, setbacks, utility locations, easements, existing structures, proposed ADU footprint.
2. Architectural floor plans – all interior layouts at 1/4 inch scale.
3. Elevations – all four exterior faces with finish callouts.
4. Sections – cross-sections through the building showing wall, floor, and roof assemblies.
5. Structural plans – foundation, framing, shear wall details. Stamped by a licensed structural engineer.
6. Title 24 energy compliance – mandatory California energy code calculations and required forms.
7. Electrical plan – service panel sizing, outlet/switch locations, fixture schedule.
8. Plumbing plan – water supply, drain-waste-vent, fixture connections.
9. Mechanical plan – HVAC equipment, duct layout, ventilation calculations.
10. Grading plan – if the lot requires earthwork or drainage changes.
11. Supplemental forms – LADBS Form B-1, soils report, fire department clearance, school-district fee form, etc., depending on jurisdiction.

Jurisdiction-Specific Drafting Standards

Every LA-area building department has its own quirks that drafters learn the hard way:

• LADBS – specific sheet title block format, LADBS Form B-1 required, separate page for shear wall details.
• LA County – separate structural sheet set, geotech letter required for hillside.
• Pasadena – enhanced exterior elevations with materials callouts, design-review for HPOZ areas.
• Long Beach – separated structural sheets, specific Title 24 form version.
• Burbank – specific Title 24 reporting format, fire sprinkler plan often required.
• Glendale – separate grading permit for any soil disturbance, specific drainage details.
• Santa Monica – sustainability scorecard, native plant landscape requirements.

CCS drafters work in all of these jurisdictions weekly. We know the city standard before we start the drawing, not after the first plan check rejection.

What ADU Drafting Costs

For a typical 800-1,200 sq ft detached ADU in LA in 2026, expect drafting fees in this range:

• Solo drafter, basic plan set: $4,000-$7,000
• Licensed architect, custom design: $12,000-$22,000
• CCS design-build (included in construction contract): effective fee $6,000-$12,000
• Pre-approved plan adaptation: $2,500-$5,500

These cover the plan set itself. Permit fees paid to the city are separate. See the ADU Permit Cost guide.

Talk to an ADU Drafter

Tell us your lot and what you want to build. We will sketch what is buildable, what it would cost end to end, and how long it would take. Free, no obligation. Call (323) 405-8909 or book a free consultation.