Lars Architecture & Construction

Innovative Room Addition Services in San Diego

Enjoy a higher quality of service that never disappoints

If you want to add more space to your home, our professional home addition services can help you create the perfect living space in San Diego and beyond. We specialize in bathroom, kitchen, and suite additions, providing top-quality results no matter your request. We follow the highest industry standards and use the latest technologies to ensure that your project meets all of your needs and expectations. Our team of experienced professionals is here for you every step of the way until you love what you see. Get in touch with us and schedule a consultation!

Get inspired for your home addition project

Pacific Beach

Second-Story Addition

Ocean Beach

Second-Story Addition

Point Loma

Suite Addition

Point Loma

Room Additions

Bay Park

Bathroom Additions

Our streamlined design-build process

Move In


During the discovery stage, our team of room addition designers and contractors aims to understand your goals and preferences. We’ll talk to you to learn more about your vision, discuss different possibilities, and assess your home in San Diego. This ensures that we create a plan that is tailored to your exact specifications.


Our entire team works with you to create a design that perfectly fits your vision. We use 3D virtual design so that you can get a better idea of what the final product will look like. We will not rest until you’re completely satisfied.


We handle the construction phase with care and attention to detail thanks to BuilderTrend, our project tracking tool. We use high-quality equipment and materials for each nook and cranny. We also provide regular progress updates so that you know what to expect throughout the process.

04_Move In

The move-in phase of our design-build process is when you can finally enjoy your new home addition. We’ll thoroughly inspect the space and walk you through it to make sure everything meets your expectations. We’re also at your disposal long after you move in.

Frequently Asked Questions

How much does it cost to add a new room?

The cost of adding room addition services in San Diego varies depending on the size and complexity of the project, as well as the materials used. Any special features you may want to add and the existing structure of your home can also affect the final price. You can consult our professionals and get an accurate estimate of the total cost.

How long does home addition take?

The duration of a home addition mostly depends on the scope of the project. Generally, a simple room addition can take a few months, while more complex projects take significantly longer.

Does adding a room increase value?

Adding a room to your home is a great way to increase its value. Depending on the room you add or expand, it can bring both functional and aesthetic value to your home. For example, adding an extra bedroom or bathroom can make your home more attractive to potential buyers, while a home office can add practical value.

What room additions are most common?

Some of the most common room additions are bathroom, kitchen, and suite additions. Bathroom additions increase the value of your home, add a luxurious feel, and give you more space. Kitchen additions are a great way to increase the functionality of a home and get the cooking space you’ve always wanted. If you want a luxurious suite addition, you can add extra living space, make room for guests, and add a unique touch to your home.

Which reliable home addition company in San Diego & beyond should you hire?

Lars Architecture & Construction has three decades of experience providing top-quality residential architectural design including home addition services. Our trusted room addition contractors have the necessary expertise to handle any project, whether your home near Mission Hills needs a customized and luxurious suite addition or your Grant Hill home requires a larger cooking space. You can rely on us for:

Take the first step toward having your dream home and contact us today!

Explore our design center and showroom

Stunning bathroom & kitchen showroom in San Diego.

Take your pick among timeless and modern design-build ideas.