Overview
AltArc Construction is a Bay Area design-build remodeling contractor. We take residential renovations, additions, ADUs, and repairs from design through construction, with permits and project coordination handled along the way. Our leadership brings 10+ years of construction experience, supported by a core crew with 20+ years of hands-on expertise in remodeling and finish work. We believe good construction starts with a thoughtful design, a clear scope, realistic planning, and steady communication throughout the project. We work with clients in English and Chinese, and we approach every project with the same goal: deliver solid work, keep communication clear, and leave clients with a finished result they can feel good about.
Led by founder Lance Sun who brings over a decade of hands on construction management experience our company is supported by a master team with over twenty years of industry expertise. This unique combination of modern project management and veteran craftsmanship ensures that your project is executed with both innovative efficiency and deep rooted technical perfection. We manage the chaos the logistics and the heavy lifting so you receive a structurally sound and incredibly beautiful home.
Our Proven Construction Process
On Site Evaluation and System Diagnosis
Fixed Scope Proposal and City Permitting
Material Readiness and Clean Demolition
Synchronized Execution and Remote Tracking
City Inspections and Flawless Delivery
Our Core Commitments to You
Fully Licensed
and Insured
Your home is your biggest investment, and it deserves a verified, accountable team. AltArc is a licensed and insured California contractor, and we make sure every project meets code and has the permits it requires.
Clear Pricing
No Surprises
Before any work begins, you get a detailed proposal that spells out exactly what’s included. If something unexpected comes up once walls are opened, we explain it, price it in writing, and only proceed with your approval.
One Team
From Design to Done
With AltArc, one team handles your design, permits, and construction. The people who plan your space are the same people who build it, so nothing gets lost along the way and you have one point of contact from start to finish.
Long Term
Workmanship Warranty
A true professional does not disappear after the final payment. We stand proudly behind the quality of our builds. We provide a comprehensive warranty on our craftsmanship ensuring that your new space remains flawless and structurally sound long after the job is done.
Ready To Discuss Your Project?
