Building spaces that last a lifetime
Cornerstone Builders delivers residential and commercial construction across the metro area — from ground-up builds to full renovations, done on time, on budget, and to code.
What We Do
Full-service construction, start to finish
Whatever the scope, our in-house crews and trusted trade partners cover every phase of the build under one roof.
Residential Construction
Custom homes and additions built from the ground up, tailored to how your family actually lives.
Commercial Construction
Retail, office, and industrial builds delivered with strict scheduling and code compliance.
Renovation & Remodeling
Kitchens, baths, basements, and whole-home renovations that maximize your existing footprint.
Design-Build Services
One team from concept to completion — architects, engineers, and crews working in lockstep.
Site Work & Excavation
Grading, foundations, and utility prep that set every project up for a clean build.
Project Management
A dedicated superintendent keeps budget, permits, and subcontractors on a single timeline.
How We Work
A clear process, from first call to final walkthrough
No guesswork — you know what happens next at every stage of your project.
Consultation & Site Visit
We walk the site, listen to your goals, and scope the project honestly — no surprises later.
Design & Planning
Our design-build team drafts plans and a detailed budget before a single permit is filed.
Permitting & Approvals
We handle the paperwork with local building departments so your timeline stays on track.
Construction
A dedicated superintendent runs daily progress updates and keeps every trade coordinated.
Final Walkthrough
We inspect every detail with you and stand behind the work with a written warranty.
Our Work
Recent projects across the metro area
A sample of the residential, commercial, and renovation work our crews have completed.
Client Reviews
Trusted by homeowners and businesses alike
We measure success by the projects our clients are proud to show off.
“Cornerstone rebuilt our kitchen and mudroom in eight weeks, exactly as scoped. Clean job sites every single day and zero change-order surprises.”
“We've used their commercial team on two build-outs now. Communication with the superintendent was constant — we always knew where the schedule stood.”
“From permitting to final walkthrough, they handled everything. Our custom home came in on budget, which our friends say almost never happens.”
“Professional crews, honest estimates, and they stood behind the warranty when a small issue came up months later. Exactly what you want in a contractor.”
Get In Touch
Let's talk about your project
Reach out directly and a project manager will follow up within one business day with next steps.
Call Us
(555) 812-4400
Mon–Fri, 7am–6pm
Email Us
projects@cornerstonebuilders.example
We reply within 1 business day
Visit Us
482 Industrial Pkwy, Suite 6
Riverside, CA 92501
Office Hours
Mon–Fri: 7:00am – 6:00pm
Sat: 8:00am – 1:00pm