Pacific ADU Builders

Build the Pacific 450 ADU in Orange County

Starting from $229,000 — one fixed, guaranteed price.

Get Your Free Estimate

A consultant calls you within 24 hours.

100+ Happy
Clients

15 Years of
Experience

5 Stars
Google

CA
Local

The quote matched the final invoice, dollar for dollar."

— Jennifer T., Santa Barbara

Photo — ADU exterior golden hour

Photo — ADU exterior golden hour

Photo — ADU exterior golden hour

Photo — ADU exterior golden hour

Floor plan

Floor plan — Pacific 450, 450 sqft

Why homeowners choose us

Fixed Price Guarantee

No change orders, no surprises. The price we quote is the price you pay — in writing.

Turnkey Service

Design, permits, construction — we manage every step from first call to keys in hand.

Fixed Timeline

Your completion date is backed by a written guarantee. No drift, no surprises.

Licensed & Insured

California CSLB licensed contractor. Fully bonded and insured on every project, every time.

How it works

Typical total: 6 months

01
Site Consultation
Week 1
We visit your property, assess feasibility, review setbacks and utility access, and walk you through the options that work for your lot.

You receive a same-day site assessment and preliminary feasibility verdict.
02
Design & Fixed-Price Contract
Weeks 2–4
We develop your floor plan, select finishes together, and deliver a complete fixed-price contract with every cost itemized before you sign anything.

You receive architectural drawings and a signed fixed-price contract.
03
Permits & Approvals
Weeks 4–12
We submit all permit applications, respond to city comments, and manage every inspection. You never deal with a government office.

You receive permit approval confirmation and a construction start date.
04
Construction
Weeks 12–24
Our crew builds your ADU to code, on schedule. You get weekly photo updates and a dedicated project manager available by phone or text.

You receive weekly progress reports and milestone confirmations.
05
Move-In Ready
Week 26
Final inspection passed, certificate of occupancy issued. Your ADU is fully legal, permitted, and ready for a tenant or family member.

You receive the keys, the C of O, and a completed ADU — at the price you signed.

See your ADU on your lot before you commit to anything.

Our free consultation includes a site assessment, preliminary design ideas, and a no-obligation fixed-price estimate.

Photo — Finished ADU exterior