If you’re looking to expand your living space while increasing your home’s value, a room addition is one of the smartest investments you can make. Whether it’s an extra bedroom, home office, or an Accessory Dwelling Unit (ADU), choosing the right contractor can make all the difference.
Table of Contents
What Is a Room Addition?
A room addition is a structural expansion to your home that creates new living space. These additions can range from a simple bump-out to a full second-story expansion or a standalone ADU in your backyard.

Key Benefits of Room Additions:
- Increased home value
- Additional rental income (for ADUs)
- Customized living space for growing families
- Avoiding the cost of moving
How to Choose the Best Room Additions Contractor
When selecting a contractor, consider the following:
- Licensing and Insurance – Ensure they are licensed and fully insured in California.
- Local Experience – Look for an ADU builder or room additions contractor with experience in Corona, CA for better understanding of local codes and zoning laws.
- Portfolio of Work – Ask for before-and-after photos of past projects.
- Transparent Pricing – A reliable contractor offers clear estimates without hidden fees.
- Customer Reviews – Look for high ratings and positive feedback on platforms like Google, Yelp, and Houzz.
Top-Rated Room Additions and ADU Builders in Corona, CA
Here are some standout qualities of the top ADU builders and room addition contractors in the Corona, CA area:
1. Expertise in ADUs and Room Additions
Whether you need an in-law suite, rental unit, or home office, the best contractors specialize in both room additions and ADU construction.
2. Local Knowledge
A qualified ADU builder Corona CA understands city permitting, zoning, and inspection requirements specific to Riverside County.
3. Design-Build Capabilities
Choose a contractor that handles everything—from design and engineering to permits and construction—for a seamless experience.
Why Consider an ADU in Corona, CA?
Building an Accessory Dwelling Unit (ADU) in Corona is a cost-effective way to:
- Generate passive income
- Create a private space for guests or extended family
- Boost your property’s market appeal
With the right ADU contractor Corona homeowners can enjoy a stress-free process from start to finish.
FAQs
How much does a room addition cost in Corona, CA?
Costs vary depending on size and features, but most range from $100 to $300 per square foot. ADUs may cost more due to plumbing, kitchen, and bathroom requirements.
How long does it take to build an ADU?
From permits to final inspection, it can take 4 to 8 months depending on complexity and contractor availability.
Can I finance my room addition?
Yes! Many contractors offer financing options or work with lenders who specialize in home improvement loans.
Final Thoughts
Investing in a room addition or ADU is not just about more space—it’s about making your home work better for your needs and future.
Ready to build? Contact a trusted Room additions contractor and ADU builder Corona CA today. South Star Construction offers end-to-end services that deliver quality, value, and peace of mind.