Room Additions in San Diego

Add Square Footage with a New Room, a Second Story, or an Enhancement to a Current Space

  • Family Owned & Operated Since 1975
  • 4 Generations
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San Diego home addition - second story
  • San Diego home addition - second story
  • San Diego home addition - Lincoln project
  • San Diego home addition - Olivetas project
  • San Diego home addition - Thum project
  • San Diego home additions contractor
Our Specialties

Home Additions

Murray Lampert Design, Build, Remodel is your go-to expert for home additions in San Diego, whether it’s for a new entertainment hub like a family room or great room, an extra bedroom, a luxurious master suite, or a dedicated home office. As a fully licensed General Contractor (CA License #458038) we are committed to designing and constructing your home addition in a way that aligns perfectly with both your vision and financial plan. Room additions consistently rank among the highest-value investments a San Diego homeowner can make.

About Us

Treating you like family.

We’re Murray Lampert, a family-owned San Diego Design Build Remodel company that was established in 1975. For over 50 years, we’ve been providing outstanding service to San Diego homeowners. By the time we’re done working together, you’ll feel like family.

Meet The Team
The Design-Build Process

Full-service home remodeling.

Our project managers, designers, and architectural designers work with you every step of the way, whether you are extending your living area, adding a second story, or building a granny flat for a senior member of the family.

Learn more about our design build process

Crafting Spaces You're Proud to Call Home

Quality-Driven, Custom Remodeling Expertise

San Diego Home Additions — Murray Lampert Design Build Remodel

Our tailored San Diego home extension services kick off with a personal consultation, which can be conducted in your home or virtually, led by one of our seasoned project consultants. We’re convinced that an accurate estimate is only possible through a customized design approach. Following a detailed discussion of your aspirations and the establishment of a design agreement, we craft a personalized plan that hits the mark on your needs and financial considerations. Our precise design and pricing strategy ensures every element of your project, down to the finishing touches, is thoroughly considered.

Murray Lampert’s design-build methodology - recognized by the National Association of the Remodeling Industry (NARI) as a best-practice delivery method not only informs you of the exact costs involved but also safeguards against the common discontent arising from improper budgeting for fixtures and finishes. We avoid the practice of some contractors who offer low initial quotes with basic fixtures, only to pile on change orders later. Instead, we help you select materials through our network of trusted suppliers, extending our contractor discounts to you, which adds incredible value and helps prevent any budgetary surprises, ensuring your project concludes on schedule and within your set budget. All work is permitted through the City of San Diego Development Services Department and inspected to full code compliance.

More Than Just a New Room: Adding a Second Story

Considering an addition but reluctant to compromise your outdoor spaces? A second story addition is an ideal solution. At Murray Lampert, we prioritize delivering not just extra square footage, but also ensuring that value and client satisfaction are at the heart of every second story project we undertake in San Diego.

The process begins with an in-depth in-home consultation. Our project consultants then proceed to tailor a unique plan that addresses your specific needs, drafting meticulous project details and providing you with a precise quote. Second story additions require structural engineering review and building permits from the City of San Diego — Murray Lampert manages the entire permitting process as part of our design-build contract. We promise clarity and transparency — you’ll be informed of every inclusion down to the minutest detail.

For those looking to expand their living space vertically, Murray Lampert’s custom second-story additions represent an opportunity to enhance your home without sacrificing your garden or yard area. Plus, it’s a chance to potentially unveil new views and dimensions to your living space. Our BBB Accredited since 1976, rated A+ reflects the trust San Diego homeowners have placed in us for over five decades. Let us help you take your home to the next level, literally.

Project Highlights

Ready to start the conversation?

Contact us today to schedule your FREE in-home or virtual consultation.

Our Projects

Take a Deeper Look at Our Home Additions Projects

Custom Whole Home
Custom Whole Home Remodel · Point Loma, CA

Custom Whole Home

Complete home remodel in Point Loma, CA. View this and other featured home remodeling projects from Murray Lampert.

Point Loma Remodel
Enchanting Custom Home Remodel
Whole Home Remodel · Cardiff, CA

Enchanting Custom Home Remodel

Interior & exterior remodel featuring a custom backyard, La Cantina doors, and a family friendly, fun, design throughout.

Enchanting Custom Home Remodel
Educational Articles

Learn from the experts

Home Additions

Do You Need a Second Story?

If you've outgrown your current home, a second story addition can be a great option. Here are few questions to ask before building a second story in San Diego.

More about Second Stories
Home Additions

5 Reasons You Need a Room Addition

Sometimes it's better to expand your existing space with a room addition, rather than move to a bigger home. Here are 5 good reasons to consider a room addition.

More about Room Additions
Home Remodeling

Efficiency, Sound Insulation & Curb Appeal With New Windows

Windows come in a variety of shapes, sizes, and materials. Learn about the benefits of different window types, as well as which windows are hype and which are worth the price.

More about sound insulation

Frequently Asked Questions

How much does a room addition cost in San Diego? +
Room additions in San Diego generally run $250–$600 per square foot, depending on scope, finish level, structural complexity, and site conditions. A 400-square-foot primary suite typically costs $120,000–$200,000 or more when designed and permitted to current code. Key cost variables include lot slope, HOA requirements, permit jurisdiction, and finish level. Murray Lampert prices every project to completion before construction begins, so the agreed upon scope is for a fixed price.
Do I need a permit for a room addition in San Diego? +
Yes — without exception. Structural, mechanical, electrical, and plumbing work all require permits from the City of San Diego Development Services Department or the applicable jurisdiction. Unpermitted room additions create serious problems at resale and expose the homeowner to code enforcement liability. Murray Lampert manages the full permit process as part of our design-build service.
How long does a room addition take in San Diego? +
Design typically takes 4–8 weeks. City plan check currently runs 6–14 weeks depending on the jurisdiction and project complexity. Construction on a single-story room addition of 300–600 square feet generally takes 3–5 months once permits are approved. Total elapsed time from first meeting to project completion is commonly 9–14 months for a straightforward addition, longer for a second story.
What types of room additions does Murray Lampert build? +
We build primary suite additions, family room and great room additions, bedroom additions, California room and sunroom additions, second story additions, and garage conversions. Every project is designed in-house by Murray Lampert architectural designers and built by Murray Lampert crews — one team, one contract, one point of accountability.
What is the difference between a room addition and an ADU? +
A room addition becomes part of your primary residence — attached square footage that expands how you live in your home. An accessory dwelling unit (ADU) is a separate, self-contained living unit on the same property with its own kitchen, bathroom, and entrance. Both require permits. Murray Lampert designs and builds both; the right choice depends on your goals, lot conditions, and how you plan to use the space.
Can Murray Lampert match the existing architecture of my home? +
Yes — making a room addition read as original construction is one of the clearest signs of a well-executed project. Our architectural designers work from the existing roofline, siding, window profiles, and interior finishes to design an addition that integrates rather than appends. We do this in-house, so the designer and project manager are collaborating on architectural match from the first drawings.