Photo coming soon
Custom Home
Modern Hillside Residence
A ground-up custom home with open-concept living and indoor-outdoor flow. (Sample project)
San Diego General Contractor · Licensed & Insured
Building & remodeling homes San Diego is proud to live in.
From ground-up custom homes and ADUs to kitchen, bath, and whole-home remodels — 21M Construction delivers craftsmanship you can count on, on time and on budget.
CSLB Lic. #1136864
Bonded & Insured
BuildZoom Score 93
8+
Construction & remodel services
100%
Licensed, bonded & insured
93
BuildZoom contractor score
$0
Cost for your first estimate
*Some figures are placeholders — we'll update them with 21M's verified numbers.
What We Do
Full-service construction & remodeling
One licensed team for the whole project — design support, permits, framing, and finish work, all under one roof.
Custom Home Construction
Ground-up homes built to your vision — from foundation and framing to the final walkthrough.
Learn more →ADU Construction
Accessory dwelling units that add living space, rental income, and value to your property.
Learn more →Framing
Precise, code-compliant structural framing that gives every project a solid, square foundation.
Learn more →Kitchen Remodel
Functional, beautiful kitchens with custom cabinetry, countertops, and modern layouts.
Learn more →Bathroom Remodel
Spa-inspired bathrooms — custom tile, walk-in showers, vanities, and smart storage.
Learn more →Home Additions
Add square footage that blends seamlessly — extra bedrooms, suites, and second stories.
Learn more →Project photo coming soon
Why 21M Construction
A licensed local team that treats your home like our own
21M Construction Co is a San Diego–based general building contractor. We handle the entire build — planning, permits, structure, and finishes — so you have one accountable partner from start to finish.
- Licensed & accountable. California CSLB License #1136864 — General Building (Class B).
- Bonded & insured. Surety bond and workers' compensation coverage in place for your protection.
- Clear communication. Straightforward estimates and regular updates — no surprises.
- Quality craftsmanship. Skilled crews and trusted trade partners on every job.
How It Works
A simple path from idea to finished build
Consultation
We meet, walk the space, and talk through your goals, timeline, and budget.
Estimate & Plan
You get a clear, itemized estimate plus a plan for permits and scheduling.
Build
Our crews get to work with quality control and regular progress updates.
Final Walkthrough
We review every detail together and don't finish until you're happy.
Recent Projects
A look at our work
Project photos and details are placeholders for now — we'll showcase 21M's completed builds here soon.
Photo coming soon
Kitchen Remodel
Chef's Kitchen Transformation
Custom cabinetry, quartz countertops, and an oversized island. (Sample project)
Photo coming soon
ADU
Backyard ADU Build
A detached accessory dwelling unit designed for rental income. (Sample project)
Client Feedback
What homeowners say
Placeholder testimonials — we'll replace these with real reviews from 21M clients.
★★★★★
"The team was professional from the first estimate to the final walkthrough. Our remodel finished on schedule and looks incredible."
Homeowner Sample review · San Diego
★★★★★
"Clear communication the whole way through. They handled the permits and kept the site clean. Highly recommend."
Homeowner Sample review · San Diego
★★★★★
"They built our ADU exactly as promised. Quality work and a crew we trusted in our backyard every day."
Homeowner Sample review · San Diego
Ready to build something great?
Tell us about your project and we'll put together a free, no-obligation estimate.