LJ 21 Construction & Design Studio Inc.
Welcome to LJ 21 Construction & Design Studio Inc., your full-service residential partner in San Diego & Riverside County, and surrounding areas. Since 2013, we’ve delivered expert design + build solutions with a personalized, client-first approach.
Consultation
Design & Permits
Our team develops plans and handles approvals.
Construction
Quality builds with attention to detail.
Walkthrough
Final check & your satisfaction guaranteed.
Our Work
Take a look at some of our recent projects — from custom homes and ADUs to full remodels and outdoor spaces.
Our Services
We provide comprehensive residential construction services, all handled by our in-house design + contractor team:
Custom Homes
From concept to keys, your dream home becomes reality.
ADUs & Garage Conversions
Add flexibility and value to your property.
Remodels & Additions
Kitchens, bathrooms, expansions—refresh any space.
Outdoor & Pools
Create inviting outdoor living, entertaining, and pool areas.
Design & Permitting
Floorplans, approvals, and code compliance handled for you.
Ready-to-Build Plans
Save time and costs with pre-approved construction drawings already reviewed and approved by the city.
Demolition and Hauling
Prepare your project site safely and efficiently with our professional demolition and hauling services.
Grading
Proper grading is essential for a strong foundation. Our grading services ensure your site is level, stable, and ready for construction.
Equipment Rental
Support your construction project with reliable equipment available for rent.