Additions · Diamond Bar, California
Home Additions
in Diamond Bar, CA
Structural home additions built to last — room additions, second stories, master suites, and large multi-room expansions. Fully permitted and engineered. TDQ Construction has served Diamond Bar including The Country, Pantera, Maple Hill and surrounding areas since 1987.
Home Additions in Diamond Bar
Serving Diamond Bar and Surrounding Areas
TDQ Construction provides home additions services in Diamond Bar, California. We are a Class A, B, and C-8 licensed contractor — giving us the legal authority to handle the full scope of your project in-house, including any civil, structural, and finish work required.
Most contractors in Diamond Bar hold only a Class B General Building license, limiting what they can legally self-perform. TDQ's broader licensing means your home additions project stays under one accountable team from start to finish.
We serve homeowners and property owners throughout Diamond Bar including The Country, Pantera, Maple Hill and all surrounding neighborhoods.
Areas We Serve in Diamond Bar
Home Additions Throughout Diamond Bar
Why Choose TDQ
The Licensed Choice for Diamond Bar
TDQ Construction has been serving California property owners since 1987. Our combination of Class A, B, and C-8 licenses allows us to handle the full scope of any residential or commercial project — without subcontracting work that requires specialized licensing.
When you hire TDQ for home additions in Diamond Bar, you get one team, one contract, and one point of accountability from permit to final inspection.
Call (714) 357-1608Class A + B + C-8 Licensed
Most contractors in Diamond Bar hold only a Class B license. TDQ holds Class A General Engineering, Class B General Building, and C-8 Concrete licenses — giving us the legal authority to handle every phase of your project in-house.
One Contractor, Full Scope
TDQ manages every trade under one license and one point of contact. No coordination gaps between separate contractors, no accountability gaps, no scheduling delays.
Fully Permitted & Inspected
Every TDQ project in Diamond Bar is properly permitted and passes all required inspections. Unpermitted work creates liability at resale — we never take shortcuts.
Family-Owned Since 1987
TDQ has built its reputation on referrals since 1987. Every project in Diamond Bar is treated like our own property — because our long-term reputation depends on it.
Free Estimate
Get a Free Addition Estimate in Diamond Bar
TDQ Construction provides detailed written estimates before any work begins. Call or email us to discuss your home additions project in Diamond Bar.
Send Us a Message
Service Area
Home Additions Across California
TDQ Construction provides home additions services throughout California. Select a city to learn more.
202 cities across California · Don't see yours? Call us.