ADU builder in Los Angeles & the San Gabriel Valley
Yellow River Construction (黄河建筑) designs, permits and builds backyard ADUs, garage conversions and JADUs in Rosemead, Monterey Park, Arcadia, San Gabriel, Alhambra, Temple City, Rowland Heights, El Monte and across Los Angeles County. One licensed team for plans, city permits, electrical and construction. We speak 中文 and English.
Design rendering / 设计效果图
Home Additions – Design Renderings
First-floor + full second-story addition, about 2,300 sf, 3-car garage. Renderings for reference only, not a completed project.
Design Rendering / 设计效果图 
Design Rendering / 设计效果图 
Design Rendering / 设计效果图 
Design Rendering / 设计效果图
From backyard to
finished ADU
California law lets most single-family lots add an ADU and a junior ADU, approved ministerially. We handle every step — and because we hold both B and C-10 licenses, the panel upgrade and all-electric equipment are done in-house. Read our ADU guide →
Free lot check
Send your address. We review lot size, setbacks, utilities, electrical capacity and access, and tell you what fits.
Choose a plan
Start from a YRC design (500–1,000 sq ft, all-electric) or a city-listed plan, or go custom for tricky lots.
Permit
Site plan, engineering and Title 24 energy documents; we submit to your city and answer plan-check comments.
Build
Our own crew builds it — foundation to final inspection — with electrical done under our C-10 license.
Ready-made ADU plans
Original ADU designs by Yellow River Construction. Renderings are for reference only. Contact us for a free quote.
Renderings for reference only1 Bed / 1 Bath ADU — 500 sf
- 500 sf
- 1 Bed
- 1 Bath
- Detached
Renderings for reference only1 Bed / 1 Bath ADU — 500 sf
- 500 sf
- 1 Bed
- 1 Bath
- Detached
Renderings for reference only2 Bed / 1 Bath ADU — 745 sf
- 745 sf
- 2 Bed
- 1 Bath
- Detached
No plans match these filters.
Renderings are for reference only. Final plans require review and stamps by California-licensed professionals. Yellow River Construction Inc · CSLB License #1161539 (B, C-10).
ADU builder near you
Every city runs its ADU program differently. Our guides cover the process, official links and what to prepare.
Electrical, restoration
and commercial work
No juggling subcontractors. Yellow River Construction handles your job start to finish — licensed, bonded and insured.
Electrical Services
Panel upgrades, EV chargers, whole-home rewiring, troubleshooting and commercial electrical — done to code and permitted properly under our C-10 license.
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Restoration
Water-damage mitigation and drying by an IICRC Certified Firm — with licensed electrical repair and full rebuild under one roof.
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ADUs
Accessory dwelling units for Southern California homeowners — design, permits and construction from one accountable team.
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Commercial TI
Tenant improvements and commercial build-outs — we carry the B General Building license, so the whole job stays with one contractor.
LEARN MORE →Recent projects
Real jobs, real photos — from our own crews across Los Angeles County.
LICENSED. BONDED.
INSURED.
California CSLB License #1161539 — B General Building and C-10 Electrical, current and active. IICRC Certified Firm for water-damage restoration. Verify any contractor’s license before you hire.
Built different, on purpose
We’re not a lead broker and we’re not a one-truck handyman. Here’s what you actually get.
One team, start to finish
Mitigation, electrical and rebuild under one roof. You never chase three contractors or wonder who’s responsible — we are.
Real licenses, real accountability
CSLB #1161539 carries both B (General Building) and C-10 (Electrical). Permitted properly, inspected properly, done to code.
IICRC Certified Firm
Our water-damage work follows the industry’s recognized standard of care — not guesswork, not shortcuts.
Diagnostics before dollars
Thermal imaging and real troubleshooting up front, so you pay to fix the actual problem — not to hunt for it.
Rooted in the San Gabriel Valley
Yellow River Construction Inc is based in City of Industry, California, and serves homeowners and businesses throughout Los Angeles County. Our crews handle everything from emergency water damage to full electrical upgrades and ground-up ADUs.
Office hours are Monday through Friday, 8:00 AM to 5:00 PM. Call us for a straightforward, no-pressure quote.
MEET YOUR CONTRACTOR →READY TO ADD
AN ADU?
Call, email, or send the quote form for a free lot check — a real person answers.