Cornerstone Home Design
Countertop Fabricator in South San Francisco, California

Customer Reviews
About Cornerstone Home Design
Cornerstone Home Design is a professional countertop fabrication and installation company proudly serving South San Francisco, California and the surrounding communities. Rated 4.5 out of 5 stars with 168 reviews, Cornerstone Home Design has established a reputation for exceptional craftsmanship and customer service in the custom countertop industry. Their skilled team of fabricators and installers specializes in transforming premium natural and engineered stone into stunning kitchen countertops, bathroom vanities, fireplace surrounds, and other custom stone surfaces. With expertise spanning Granite, Quartz, Marble, Quartzite, Cornerstone Home Design works closely with homeowners, builders, and designers to bring countertop visions to life. From initial consultation through final installation, their hands-on approach ensures every project meets the highest standards for precision, quality, and aesthetics. Whether you're planning a complete kitchen remodel or updating a bathroom vanity, Cornerstone Home Design delivers craftsmanship that elevates every space.
Materials
Services
Services & Process
Cornerstone Home Design provides comprehensive countertop services including Custom Countertop Fabrication, Countertop Installation, Kitchen Countertops, Bathroom Vanities, Edge Profiling. Their fabrication process starts with precise digital templating using laser measurement technology to ensure a perfect fit. Each countertop is custom-cut and polished using state-of-the-art CNC machinery, with meticulous attention to edge profiles, sink cutouts, and seam placement. Professional installation is completed by their experienced crew with proper support structures, silicone sealing, and final quality inspection to ensure lasting performance.
Materials Expertise
Cornerstone Home Design specializes in premium countertop materials including Granite, Quartz, Marble, Quartzite. Their deep material knowledge helps customers make informed decisions based on each stone's unique characteristics - from the dramatic veining of natural marble to the consistent patterns and low maintenance of engineered quartz. They source slabs from top quarries and distributors, maintaining relationships with brands like Cambria, Caesarstone, Silestone, and MSI to offer competitive pricing and wide material selection.
How the Process Works
The countertop project process at Cornerstone Home Design follows a proven workflow designed for precision and customer satisfaction: (1) Initial in-home consultation and estimate, where their team assesses your space and discusses material options and budget. (2) Material selection from their slab inventory or supplier showrooms, where you hand-pick your exact slab. (3) Digital templating using laser measurement for sub-millimeter accuracy. (4) CNC fabrication - your countertops are precision-cut with programmed edge profiles, cutouts, and polishing. (5) Quality inspection before delivery. (6) Professional installation with proper support, sealing, and cleanup. Most residential kitchen projects are completed within 7-10 business days from template to installation.
Service Area
Cornerstone Home Design proudly serves South San Francisco and the greater South San Francisco metropolitan area in California. Their typical service radius extends 30-50 miles from their fabrication shop, covering surrounding neighborhoods, suburbs, and communities. They serve both residential and commercial clients throughout the region, including new construction, remodeling projects, and multi-unit developments.
Frequently Asked Questions
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How much do countertops cost at Cornerstone Home Design?
Does Cornerstone Home Design handle sink and cooktop cutouts?
What is the warranty on countertops from Cornerstone Home Design?
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