Custom Room Additions Have Never Been Easier
At Sigura Construction, we specialize in room additions and home extensions that blend seamlessly with your existing home. Whether you want to expand your kitchen, add a living room extension, or build a custom bedroom, our room addition services, available throughout the Bay Area and in communities such as Menlo Park, Los Altos, Los Altos Hills, Palo Alto, Saratoga, Hillsborough, and Los Gatos, are customized to meet your needs and match your home's style with precision. We create 3D design layouts with full-color renderings of every element and use top-quality materials to enhance both function and style.
With 24 years in the construction industry, an A+ BBB rating, and Diamond Certified status for 18 years, Sigura Construction is the trusted room addition company serving San Mateo and Santa Clara counties. As a full-service design-build team, we handle permits, engineering, construction, and the final walkthrough to deliver exceptional results and a stress-free experience from start to finish. Contact us today for a free estimate at (408) 492-1379.
Types of Room Additions / Extensions
We specialize in every type of Bay Area room addition contractor project, from single-room extensions to multi-room expansions.
Living Room Extensions
Maximize your space and natural light with a custom living room extension designed for comfort and style.
Bedroom Additions
Create additional bedrooms that perfectly match your home while providing more space for family or guests.
Kitchen & Dining Additions
Expand your kitchen or dining area to accommodate your entertaining needs with our home extension services.
Multi Purpose Rooms
Add offices, gyms, or playrooms with our room addition contractor services, tailored to your lifestyle.
Why Choose Sigura Construction
We're ready to grow your living space! Contact our room addition contractor Expert today to start your project.
Our Room Addition / Home Extension Process
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Consultation & Site Evaluation
We listen to your ideas, goals, and lifestyle needs to understand your vision. We review your space and take precise measurements.
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Design & Planning
We present layout ideas, style inspirations, and mood boards that reflect your taste. We create realistic 3D renderings so you can see colors, finishes and the layout come to life.
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Permits & Approvals
We manage all city submittals, engineering, and permit documentation - saving you time and stress.
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Construction & Kickoff
Once plans and permits are approved, we meet on-site to review scope, timeline and expectations. The team mobilizes and begins structural work, rough-ins, and all foundational elements.
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Inspection & Quality Check
We conduct a comprehensive final inspection and address every detail. From walls to floors to fixtures and final details, we address every detail to deliver a flawless result.
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Project Completion & Final Walkthrough
You'll receive consistent progress updates and walkthroughs at major phases to review work, answer questions to ensure everything meets your expectations.
Our Completed Projects Across the Bay Area

Ralph
Morgan Hill Remodel

Eagle Dr
Sunnyvale Home Remodel

Wayside
Portola Valley Renovation

Webster
Palo Alto Remodel

Cedarwood
San Mateo Renovation
What Homeowners Say About Us
Need More Space?
Free estimate. Free Design included on qualifying projects.
