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harmon and harmon construction rochester

ADU's & Additions

Renovate Your Space

Home Renovations • Additions • ADU's

  • 30+ Years Experience
  • Licensed Bonded & Insured
  • Over 50 5 Star Reviews

Home Additions, ADUs, and Renovations in Rochester, Olympia, and Surrounding Areas

Expanding your living space with a home addition, accessory dwelling unit (ADU), or full renovation is an investment in both comfort and property value. Harmon & Harmon Construction specializes in creating seamless, functional, and visually appealing home expansions that meet the evolving needs of homeowners. Whether you're adding extra bedrooms, building an ADU for rental income, or modernizing your home's layout, our team ensures high-quality craftsmanship from start to finish.

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(253) 442-4528

Custom Home Additions for More Living Space

A well-planned home addition provides the extra space needed for growing families, home offices, or entertainment areas. Our team designs and builds additions that blend seamlessly with the existing structure, enhancing both functionality and aesthetics. From expanding kitchens and living rooms to creating new bedrooms, bathrooms, or second-story additions, we bring your vision to life with expert construction and attention to detail.

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(253) 442-4528

Accessory Dwelling Units (ADUs)

ADUs offer a flexible solution for guest accommodations, rental properties, or multi-generational living. Whether you're converting a garage into a self-contained apartment, adding a detached unit in the backyard, or modifying an existing space for independent living, our team designs efficient, code-compliant ADUs that maximize both comfort and investment potential.


Whole-Home Renovations for Modernized Living

A full home renovation breathes new life into an outdated space, improving layout, energy efficiency, and overall appeal. Our renovation services cover kitchen upgrades, bathroom remodels, open-concept floor plans, and whole-home transformations that enhance both functionality and style. By updating interiors with high-quality materials and modern design elements, we help homeowners create a home that reflects their needs and preferences.

Why Choose Harmon and Harmon for Your Custom Home?

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Over 30 Years Experience

Harmon & Harmon Construction has over 30 years experience building custom homes and remodels.

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Licensed, Bonded & Insured

For your peace of mind, we've got you covered. We maintain the best insurance in the industry.

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Trusted By Your Neighbors

With over 50 5 star reviews on Google, We take pride in our craft and treat your project like it's our home.

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Every Project Is Unique To You

We would rather build 100 projects for 1 customer than 1 project for 100 customers. Every project we do is unique to you.

Trusted Construction Services in Western Washington


With years of experience serving Rochester, Olympia, Lacey, Tumwater, Tenino, Rainier, Yelm, Centralia, and Chehalis, we understand the local building codes, permitting process, and architectural styles that define the region. Our expertise ensures a smooth construction process, transparent communication, and superior craftsmanship in every project we undertake.


Start Your Home Expansion or Renovation Today

A well-executed home addition, ADU, or renovation not only enhances the functionality of your living space but also increases your property's long-term value. Harmon & Harmon Construction is committed to delivering high-quality construction solutions tailored to your needs. Contact us today to discuss your project and schedule a personalized consultation.

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(253) 442-4528

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