Room Additions & ADU by Buildda
Room Additions & ADU by Buildda Overview
Why Choose Buildda?
Buildda room additions deliver:
- Seamless Integration – New spaces that look like they were always part of your home.
- Full-Service Management – We handle design, permits, and construction from start to finish.
- ADU Expertise – We know California's ADU regulations and can help you add rental income potential.
Whether you're planning a complete transformation or targeted improvements, Buildda prioritizes your satisfaction at every step. Count on us to deliver exceptional results and ensure a stress-free experience from start to finish.
What's Included in Every Buildda Room Additions & ADU Package
Design Services
Architectural design that matches your home's style.
Permit Processing
Complete permit application and management.
Full Construction
Foundation, framing, roofing, and all mechanical systems.
Interior Finishing
Drywall, paint, flooring, and all trim work.
Ready to Get Started?
Contact us for a free consultation and detailed estimate. Our team will work with you to understand your needs and provide a comprehensive plan for your project.
Buildda Home Addition Process
Our efficient process for a home addition, designed to expand your living space seamlessly.
Timeline: 8–16 weeks, depending on size and complexity
1
Consultation & Design
We explore your addition goals—extra bedroom, sunroom, or expanded kitchen—then craft a design with layout, materials, and finishes.
Outcome:
A tailored plan for your new space.
2
Site Assessment
Buildda evaluates your home's foundation, utilities, and zoning to ensure the addition integrates flawlessly.
Outcome:
A confirmed design ready for construction.
3
Contract & Cost Review
Buildda delivers a detailed contract covering scope, timeline, and costs—labor, materials, and structural work.
Outcome:
A signed agreement to launch your project.
4
Permitting
We handle permits and zoning approvals to meet local codes for your addition's size and structure.
Outcome:
Legal clearance to start building.
5
Preparation
Buildda preps the site—clearing space, protecting your home, and staging materials like framing and roofing.
Outcome:
A ready foundation for construction.
6
Construction & Installation
We build your addition—foundation, framing, walls, and roofing—tying it into your home over 6–12 weeks.
Outcome:
A fully formed, weather-tight space.
7
Final Touches & Inspection
Buildda adds interior finishes (drywall, flooring), connects utilities, and ensures it passes inspections.
Outcome:
A polished, code-compliant addition.
8
Move-In Ready
We hand over your expanded home with a walkthrough, ready for you to enjoy.
Outcome:
Your bigger, better home, complete!
Ready to Transform Your Home?
Let's start with a conversation about your vision and how we can bring it to life.
Pricing
Room Additions & Home Extensions
Expand Your Living Space
Professional room additions that seamlessly integrate with your existing home, adding valuable square footage and functionality to your property.
Whether you need an extra bedroom, expanded living area, or sunroom, our team handles every aspect of room additions from design and permits to construction and finishing. We ensure new additions match your home's existing architecture.
Bump-Out Addition
$37,500 - $75,000
Small 50-100 sq ft extension to expand an existing room.
- ✓Foundation and framing
- ✓Matching exterior siding
- ✓Electrical and HVAC extension
- ✓Interior finishing
- ✓Permit handling included
- ✓Seamless integration
Standard Room Addition
$120,000 - $225,000
Full room addition of 150-300 sq ft.
- ✓Complete architectural design
- ✓Full permit processing
- ✓Foundation and construction
- ✓Matching roofing and siding
- ✓Electrical and plumbing
- ✓HVAC system extension
- ✓Interior finishing included
Second Story Addition
$300,000 - $600,000
Add a full second floor to your single-story home.
- ✓Structural engineering
- ✓Complete second floor
- ✓New staircase construction
- ✓Multiple bedrooms and bath
- ✓New roofing system
- ✓Full electrical and plumbing
- ✓HVAC system upgrade
- ✓Exterior matching guaranteed
Why Choose Buildda?
- •Add significant home value
- •Avoid the cost and stress of moving
- •Customize space for your exact needs
- •Full permit and inspection handling
Start Your Room Addition Project
Schedule a consultation to discuss your expansion plans and get a detailed estimate.
Frequently Asked Questions
Common questions about room additions and accessory dwelling units in California
Project Gallery
Project Photos Coming Soon
We're building our gallery of completed room additions & adu projects. Contact us to see examples of our work or schedule a consultation.
What Our Customers Say
See why homeowners trust BUILDDA for their projects.
Roofing
"After months of roof issues, Buildda installed our new roof, fascia boards, a cricket for better drainage, and new rain gutters. Smooth experience, professional crew, and our home looks amazing. Highl...
AK
Anna K.
Culver City, CA
Bathroom Remodel
"I recently had my bathroom remodeled by Buildda, and I'm really happy with the results! Shiran, who helped coordinate the project, was great easy to communicate with, very responsive, and made sure ev...
MD
Marissa D.
Los Angeles, CA
Backyard Remodel
"Buildda turned my once plain backyard into a welcoming space I can truly enjoy. From start to finish, their communication was straightforward, and the entire process felt surprisingly smooth. The fina...
HR
Hannah R.
Mar Vista, CA
See Our Room Additions & ADU Projects
See our room additions & adu projects come to life
Check out our latest construction project!
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Follow @buildda_officialReady to Start Your Room Additions & ADU Project?
Get your free, no-obligation quote in just a few minutes. Our team typically responds within 24 hours.