Your architect is your builder.
No middlemen. No miscommunication. No markup on markup. AS Design Build holds both California licenses — so your project flows from first sketch to final walkthrough under one roof, one contract, one accountable partner.
Most people hire an architect then a contractor.
That's two contracts, two egos, zero alignment.
Architect's Eye
A licensed California architect who designs spaces that are beautiful, code-compliant, and buildable from day one — no redesigns when construction starts.
Builder's Hands
A B-licensed general contractor who manages every phase of construction with trusted subcontractor teams, keeping your project on time and on budget.
One Contract
One agreement. One responsible party. When issues arise on-site, they get solved on the spot — not debated between two firms pointing fingers at each other.
Residential. Commercial. Complete.
From backyard ADUs to commercial tenant improvements, we handle design and construction under one license.
Home Renovations
Kitchen, bath, and whole-house remodels with architectural design and hands-on construction management. We draw it, we build it.
Design + BuildADU Design-Build
Detached, attached, and garage conversions — from feasibility through permit through keys. California ADU law expertise built in.
Design + BuildCommercial TI
Tenant improvement build-outs for offices, warehouses, and retail. Architecture and general contracting under one contract, one schedule.
Design + BuildFrom concept to keys.
Consult
We discuss your vision, review your property, and define scope and budget together — free of charge.
Design
Architectural plans, 3D concepts, engineering coordination — all code-compliant and buildable.
Permit
We submit, manage plan check, handle all city corrections, and get your permit approved.
Build
Construction managed by the same architect who designed it. Zero lost in translation.
What they say.
Having the architect on-site during construction changed everything. Problems got solved in minutes, not weeks of back-and-forth emails between two separate firms. Our ADU came in on budget and exactly as designed.
We interviewed three contractors and two architects before finding Aaron. Once we realized one person could do both — and actually understood our design taste AND our budget — it was a no-brainer. Saved us months.
The warehouse TI was permitted and built faster than any project I've done with separate architect and GC teams. One point of contact made the whole process painless. We'll use AS Design Build for every future space.
Aaron Song, Architect + Builder
AS Design Build is led by Aaron Song — a California-licensed architect and general contractor who believes great spaces happen when design and construction speak the same language.
Based in Fullerton and serving Orange County and the greater Los Angeles area, Aaron brings both licenses to every project — residential and commercial — giving clients a single, accountable partner from the first sketch to the final walkthrough.
No hand-off. No lost intent. Just one person who designed your space, managing the team that builds it.
Let's build something
worth keeping.
Schedule a free consultation to discuss your project — whether it's an ADU, renovation, or commercial build-out.
Get in Touch →