503 Builders LLC

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About

I have always had a passion for construction, design and increasing home values. From my personal bad experiences with sub par contractors that take on too many jobs or has a sloppy finish, I figured our team can do better than the industry "standard". Being Japanese in this industry, we focus on laser like precision and take pride in our finish carpentry. Fast, Good, Affordable, you get to pick all three.

Overview

Current Top Pro

Hired 63 times

Serves Troutdale, OR

Background checked

License verified

5 employees

6 years in business

Business hours

This pro hasn't listed their business hours.

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This pro accepts payments via Cash, Check, Credit card, PayPal, and Venmo.

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Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

2025

Credentials

License verified

Contractor – Residential General

License state: OR

Background checked

Passed by Kohei Takazawa on Jan 18, 2022.

Services offered

Install type

Property type

Residential

Commercial

Projects and media

Reviews

Customers rated this pro highly for work quality, responsiveness, and professionalism.

Excellent 4.9

54 reviews

5

96%

4

2%

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2%

Read reviews that mention:

Jacob h.

Oct 21, 2025

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Hired on Thumbtack

I had a small leak in my bathroom that caused some water damage to the floor trim, and this team handled everything quickly and professionally. They identified the problem right away, repaired the leak, and replaced the damaged trim so it looks brand new. The communication was great, they showed up when they said they would, and the quality of their work was top-notch. It’s such a relief to have the issue fully resolved and the space looking even better than before. I’d absolutely hire them again for any future home projects!

Details: Fix bathroom tiles or flooring • Fix water damage • Full bath • Home

Bathroom Remodel

Leslie F.

May 14, 2026

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Hired on Thumbtack

Details: Yes, the structure has already been built • Other • Already have plans - just need installation • Yes, an existing wall needs to be removed • Yes, I need plumbing or electrical lines installed • Yes, I need drywall applied • Home

Framing Carpentry

Joe G.

Apr 24, 2026

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Hired on Thumbtack

Kohei and his team did a fantastic job on a challenging project. We had water damage in a bathroom that required replacing the vanity, sheetrock and redoing the shower, tile and all. Kohei worked with us to select replacement material and the installation of everything was perfect. We now have a beautiful new bathroom. The challenge was how to make the plumbing work with the new equipment. Several times I was sure it couldn't be done but the team at 503 Builders worked it out to perfection.

Details: Sketches or a basic idea • Bathroom • Repair existing structure • No load-bearing structures involved • Less than 500 sq ft • Home

General Contracting

Richard S.

Dec 4, 2025

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Hired on Thumbtack

503 Builders (not to be confused with 503 Construction), run by Mr. Kohei Takazawa, did superior work on a very complex emergency house repair for me. The problem with the house was extreme: a deck above the flat roof of the sunroom at the back of the house was concealing a major leak in the roof (and lower ceiling), which had actually started bowing, letting water build up. Unfortunately, the problem only became apparent when a leak in the sunroom developed. Opening the ceiling, we discovered massive dry rot and even mold. And the ceiling was ready to collapse. The deck, railing, roof, ceiling rafters, and ceiling drywall all had to be removed. And, it was already October (2025) and heavy storms had started. I talked to Kohei over the phone, and he came out the following day, a Friday, to inspect the property and give an estimate. I received the estimate which was fair (less than I had expected) that day. Work began the following Monday! The back of the house was covered under a large tarp, which they worked under, often in heavy rains. Kohei's workers were professional and extremely productive. By the following Saturday, just 6 days later, all new rafters had been placed in the ceiling and a new TPO roof installed, replacing the previous torch down roof. After the roof was installed, Kohei had a second team install a new and now composite deck. This was complex given the structure of the back room. After the deck was installed, they added and painted new sheetrock on the ceiling in the lower room. Kohei then had a metal fabricator (Luigi), really an artist, hand craft and install a new metal hand railing, which is beautiful. Summary: Kohei and his team were skilled, professional, and hardworking. They got the job done in record time. The quality of the work is impressive and far surpassed what I was hoping for. They adapted their schedule to the terrible October weather. They absolutely stuck to their estimate, which was fair to begin with. The communication was good. And they calmed my panic. If I could give 503 Builders a higher rating than five, the top number, I would. I definitely plan to use them for future jobs.

Details: I'm just starting • Addition • Replace parts of existing structure • Repair existing structure • Yes, load-bearing structures are involved • Less than 500 sq ft • Home

General Contracting

Chrissy T.

Aug 25, 2025

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Hired on Thumbtack

We needed a contractor to help us with a complete renovation down to the studs (in some of the rooms), new roof, windows, plumbing, electrical, paint, etc. Not only that, but we needed someone to help us with a complex renovation loan process with HUD. Kohei and his team were easy to work either way and also added valuable collaboration and ideas. He was there to save the day several times when we ran into unforeseen gotchas! Renovations can be stressful, but Kohei and his team were always a part of the solution and I always felt they had us! We will be using them again! Just need to find the next house that needs love 😜

Details: Sketches or a basic idea • Kitchen • Living room • Bedroom • Bathroom • Dining or family room • Garage • Whole home or building • Replace parts of existing structure • No load-bearing structures involved • More than 2,000 sq ft • Home

General Contracting