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Top-Rated Addition to existing structure builders in Auburn - Updated Nov 2026

Paul Haugen Construction LLC
4.4(
150
)
Addition to Existing Structure - Build

Serving Auburn, WA and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Jared and his team did an amazing job. From start to finish, it was clear they wanted to make sure we got what we wanted. Jared worked with us to come up with the design, and the team were all great to work with. They continuously kept us informed of what they were doing, and if something needed adjusting after it was done, they were very quick to make any requested changes. The job included removing a window, and re-sizing two others; replacing siding on the exterior and matching our existing paint; re-sizing the living room archway; replacing kitchen and bath flooring with tile; removing a bathtub, re-arranging the bathroom and adding a large shower; moving a tankless water heater from outside to inside; re-routing gas and water for the washer and dryer; installing new appliances; installing cabinets and quartz countertops. I highly recommend this company and will be hiring them again for future projects."
Kitchen
Remodel
Bathroom
porch 1
porch 2

+44

Response time1 day
2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
141
)
Addition to Existing Structure - Build

Serving Auburn, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"We hired Topaz Remodeling and Yoni for a home addition to create a bigger living room and extra bedroom. The project involved framing, roofing, and major structural work - and Yoni handled it like a pro. He stayed on top of scheduling, inspections, und kept us updated every step of the way. The new space blends seamlessly with our original house. We are beyond happy with the results!"
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel

+63

Response time10 hrs
Response rate100%
276 neighbors recently requested a quote
Avatar for KOI BUILD CO
KOI BUILD CO
4.8(
20
)
Addition to Existing Structure - Build

Serving Auburn, WA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Awesome team they worked on our vacant house and remodeled it before move in , checked in everyday after hours and their team always took the time to clean and organize before they left for the day .final product was great and pricing was very fair vs other contractors, would definitely recommend chris and the team again and again !!!"
Puyallup Remodel
Puyallup Remodel
Puyallup Remodel
Puyallup Remodel
Family Room

+164

Response time1 day
63 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for SmartDecks LLC
SmartDecks LLC
4.4(
45
)
Addition to Existing Structure - Build

Serving Auburn, WA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Dave Thacker is old school. He gives you a quote for your project and sticks to it. If he finds something he missed, he doesn't charge extra and fixes it. He gives fair quotes, works fast, and is really a pleasure to work with. While he was at my home my old fence blew down. I had him fix that too. Both the deck and the fence look professionally made, like the professionals that built them! I would definitely refer a friend or relative to PlanTrak!"
Patio Roof with Fireplace
Patio Roof with Fireplace
Big Waterproof deck
3 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Auburn, WA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Auburn, WA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.