License VerifiedServing El Cajon, Carlsbad, San Diego County · Based in El Cajon, CA
Pricing on request — unlock GreenBuild Construction Inc's ADU pricing for your project
GreenBuild Construction Inc is a CSLB-verified contractor listed in San Diego County with classification B.
1+ years building ADUs · CSLB 1129062 · B - General Building Contractor
Pricing varies by unit type, size, finishes, and site conditions. Unlock GreenBuild Construction Inc's project pricing for your lot — free, no obligation.
| Unit type | Typical size | Pricing |
|---|---|---|
| Studio / JADU | ≤ 500 sq ft | Pricing locked — unlock to view |
| 1-bedroom detached ADU | 600–750 sq ft | Pricing locked — unlock to view |
| 2-bedroom detached ADU | 750–1,000 sq ft | Pricing locked — unlock to view |
| Garage conversion | 400–600 sq ft | Pricing locked — unlock to view |
| Attached ADU | 400–800 sq ft | Pricing locked — unlock to view |
Pricing is unlocked per project
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In-house design and full permit handling.
Turnkey ground-up and conversion builds.
Guidance and lender introductions.
ADU formats this builder takes on.
What's covered after move-in.
I had such an excellent experience with Ahmad & Mohammad from Green Build General Contractors. They did such a beautiful job with my bathroom renovation. The work was high quality, the attention to detail was excellent, and the entire process very professional and well managed from start to finish. They were reliable, responsive, and clearly take great pride in their craftsmanship. We’re so happy with the result and would highly recommend them to all
I wanted to thank Ahmed and his team for being very professional throughout my bathroom remodeling they did excellent job from start to finish. Most definitely would recommend other people to work with him.
Their service was AMAZING. DO NOT hesitate to book with them! They listen to your needs and help bring your vision to life!!
Got my brand new kitchen done with them!!!! Very good at what they do.
GreenBuild Was an amazing team. They knock my bathroom in 1 week. Fully remodeled
GreenBuild Construction Inc is a full-service ADU builder serving El Cajon, CA, handling design, permitting, and turnkey construction for detached ADUs, attached ADUs, garage conversions, and junior ADUs (JADUs). GreenBuild Construction Inc holds a 5.0-star rating across 36 verified homeowner reviews.
Yes. GreenBuild Construction Inc holds an active CSLB license (1129062), classified B - General Building Contractor, and is bonded and insured.
GreenBuild Construction Inc prices every ADU per project — your cost depends on size, finishes, and site conditions. Garage conversions are the most affordable path; detached units cost more. Pricing is unlocked per project: request a quote to get GreenBuild Construction Inc's exact, no-obligation estimate for your lot.
GreenBuild Construction Inc builds ADUs in El Cajon, Carlsbad, San Diego County.
Most ADU projects run 6–12 months end to end — roughly 1–2 months for design and permitting (California caps plan check at 60 days for compliant units) and 4–8 months of construction. GreenBuild Construction Inc confirms a timeline for your specific project during the feasibility consultation.
Tap any "Get a Quote" button on this page to share a few details about your property and project. We'll confirm your service area, match you directly with GreenBuild Construction Inc, and set up your free feasibility consultation — no obligation.
Pre-ADU Checkup — $499 — Get finalized permits, a pre-ADU checklist, and an on-site feasibility visit. Homeowners save $1,000s by doing this before engaging a contractor.