Design the perfect addition to fit your unique needs.

Customizable Home & Room Additions in Bonita

Your go-to home addition contractors in Bonita

Lars Architecture is a company that specializes in providing residents in Bonita with living space makeovers. Our services are tailored to match your lifestyle and requirements. We are dedicated to taking your project concept and giving you the home addition of your dreams. Our team of dedicated specialists will use their vast knowledge and cutting-edge equipment to deliver your desired kitchen expansion, bathroom makeover, ADU or second-story construction, master suite extension, or any other home improvement project. We have what it takes, so share your ideas with us!

Take a look at our custom expansions

Pacific Beach

Second-Story Addition

Ocean Beach

Second-Story Addition

Point Loma

Suite Addition

Point Loma

Room Additions

Bay Park

Bathroom Additions

Our stunning home additions will spruce up your home

Discover the perks of your new room addition

Whatever you’ve envisioned for your property, our company will assist you in enhancing its look and functionality. Your satisfaction is our top priority and we’ll do our all to give you a home addition in Bonita you can enjoy for years to come. Our home improvement projects come with a host of benefits:

  • Additional functioning living space in your home
  • Boosted resale value of your property
  • Tailored solutions to match your preferences
  • State-of-the-art appliances and fixtures
Hiring Lars was one of the best decisions we had ever made! Their residential architects and designers did an amazing job with our kitchen space, and we are so thankful for all the time they dedicated to us. learn more
They expanded our existing kitchen and updated the layout to be more practical and suitable for our needs. What we loved the most about them was that we were always included in the process and they had never missed an opportunity to check in and consult with us on the next steps. With the baby on the way, we’ll surely need some extra space, and Lars Architecture and Construction will be the first people we call!

- Jim and Stacy, Kitchen addition, San Diego

Frequently Asked Questions

Is adding a room addition worth it?

There’s no doubt that any addition to your home will increase the comfort and functionality of your living area space. A home improvement project  is a sound investment that is sure to boost the resale value of your property in Bonita.

Lars Architecture is your go-to team of contractors for a wide array of projects, including:

Can you build an addition without a foundation?

If a more sizable addition is not something your budget can take, there’s a solution. Building a small addition without having to do any foundation work and attaching the extension on the side of the house is an innovative, easy, and budget-friendly option.

A bump-out addition doesn’t need any foundation work. According to studies, this type of home improvement project can save you up to 15% compared to a regular addition.

How long do home additions take to build?

Every project is different, so it is difficult to estimate its duration without going into the specifics. However, how long your home addition will take to build will depend on several key factors:

  • Size of the home and scale of the project
  • Structure and layout of the home
  • Design and materials used for construction
  • Reputability and expertise of the contractors

To help you decide on a viable option for your home, our specialists will do an in-house analysis and provide you with the necessary information, including costs, duration, and more.

Who are the best room addition contractors in Bonita & the vicinity?

With over three decades in the industry, we’ve made a name for ourselves among local residents in Bonita and across the region. As one of the first remodeling companies in San Diego to receive a NARI (National Association of the Remodeling Industry) certification, Lars Architecture is the go-to provider of home addition services in Bonita, 91902. Contact us if you need:


Enjoy a stroll at Sweetwater Summit Regional Park or go golfing with friends at Bonita Golf Club, while our experts do their magic. Reach out today and let’s make your vision a reality!

Explore our design center and showroom

Stunning bathroom & kitchen showroom in San Diego.

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