We are H-1 Construction, one of the few local, family-owned, and operated home builders in Honolulu, Hawaii. We take pride in our work and the relationships we have fostered over the years.

H-1 Construction LLC – ADU Contractor in Honolulu, HI

About H-1 Construction LLC

We are H-1 Construction, Building ADU’s In Hawaii

We are H-1 Construction, one of the few local, family-owned, and operated home builders in Honolulu, Hawaii. We take pride in our work and the relationships we have fostered over the years. With over 30 years of contracting and construction experience in Hawaii, we have worked on projects ranging from custom new homes to extensive renovations and additions and even customized Ohana kit homes and fully custom accessory dwelling units (ADU) in Hawaii. When quality matters, you can count on H-1 Construction.

We believe that every project starts with you, your vision, and your dream.

That’s why we pride ourselves on making the construction process fun and exciting for everyone involved. We handle the permitting and planning with the city, allowing you to enjoy the construction process. Our goal is to create the perfect accessory dwelling unit (ADU) for you and your Ohana.

Why Choose Us for Your Accessory Dwelling Unit or Hawaii ADU Project?

Hawaii Home Additions or adding a Hawaii ADU (Accessory Dwelling Unit) is a relatively common upgrade within Honolulu, Hawaii and across the islands. With competitive real estate market and a housing shortage in Hawaii, ADUs have become a popular option among homeowners with growing families.

Whether it is standard home addition or an Ohana house, an accessory dwelling unit adds incredible value to a home by adding extra living space to your property and boosting the overall value of your property. Whether you are building an ADU in Hawaii to support your growing family or are looking to gain additional rental income, we can help you fully design and build the perfect ADU for you.

The Home Addition and Accessory Dwelling Unit Remodel Process

To get started, call today at (808) 723-1588 for a custom estimate or simply fill out our contact form with the details YOU are looking for in an ADU. We can help guide you through the design process, establish your wants and needs of the ADU, then begin the construction process. We look forward to working with you and creating a beautiful addition or remodel for your family.

Our Home Addition and Hawaii ADU Services.

H-1 Construction, LLC strives to provide you with the services you need to build and design the ideal home addition or Hawaii accessory dwelling unit. This includes adding a complete, custom accessory dwelling unit, building an Ohana unit, or remodeling an existing ADU. And not to worry, at H-1 Construction, we will handle the permitting and planning with the city.

Our custom ADUs allow you full control over the layout, design, and just about any feature of an ADU, including window and door options, interior packages or interior kits, bathroom and kitchen options, custom trims and roofing, fixtures, and flooring, or additional cabinetry. Our ADUs are built to withstand Hawaii’s moist climate and come equipped with a standard warranty (1-year craftsmanship, 10-year structural, and 90-day post-completion warranties). H-1 Construction, LLC will work with you on virtually any Hawaii Home Addition or Hawaii Accessory Dwelling Unit plan that you can think up. You only need to provide the dream; let us bring it to reality.

H-1 Construction LLC Reviews

juane b

2024-11-01

"Beautiful team, all very professional. They work hard and always with an aloha spirit!"

Megan Stahl

2023-09-08

"I just had to share our amazing experience with H1C, the construction company that made our Hawaiian dream home a reality. Luke, Xi, and Jo, you're not just professionals; you're now our friends for life. Our custom home is a true masterpiece, and it's all thanks to the incredible team at H1C. What impressed us the most was how they tackled unexpected issues that popped up during the project. They didn't stress us out; instead, they presented solutions and made it all seem easy. The weekly updates they provided, whether it was a video or an on-site visit, kept us in the loop and gave us peace of mind. H1C's personal touch and open communication really set them apart. Luke, Xi, and Jo treated us like family, not just clients. Their attention to detail and craftsmanship are unmatched. They've not only built us a house; they've created a loving home where we'll cherish memories forever. If you're in search of a construction company that's professional, caring, and truly dedicated, we wholeheartedly recommend H1C. They've gone above and beyond to make our dream come true, and we couldn't be happier. Thanks a million, H1C, for everything."

M L

2023-07-28

"We are grateful to have had Luke Stensland and the team at H-1 Construction for our renovation. If integrity, communication, and quality work are important to you, you will love working with H-1. We met Luke in 2010 when we replaced windows on the 1963 built Kane'ohe home we had just purchased. The window vendor recommended Luke when the person we had hired to install the new windows dropped out suddenly. What a blessing to have the H-1 team step in and get the job done efficiently and beautifully. Fast forward to 2020 we are planning a big renovation ... adding over 600sf under the roof plus a 500sf workshop carport to our posts and piers home. The area to be renovated is under our existing dwelling and needed a lot of dirt removed before construction could begin. My husband ambitiously thought he and some subcontractors could tackle this project. Because of this we talked to about a half dozen contractors and subcontractors. I quickly saw how unrealistic it would be to piece this project together and I contacted Luke who had been my first thought when we decided to do the renovation. Whew I was relieved and elated that he was willing to take the job. I appreciated the clarity of his bid after having received bids from others by text or emails that lacked details. Even though it was not the lowest bid, H-1 Construction was worth every penny given the quality of work and the quality of the people on the H-1 teamoffice team as well as construction crew and subcontractors were all great. Several trades were involved, mason, plumbers, and electricians. We were kept informed and H-1 coordinated the work to keep the job flowing. This was especially appreciated because the project was 8 months long. Yes, challenges happened yet Luke looked for and provided solutions that were fair and a win for all. We are loving our renovation. The project ended over 2 years ago, yet Luke stuck by us while we dealt with circumstances beyond anyones control to get the building permit closed. This finally happened last month June 2023. Lukes support helped us get through the final steps with the building inspector. We absolutely recommend Luke Stensland and H1-Construction whole-heartedly and without reservation. Mahalo nui loa! Marci and Tim"

Jory Mooney

2017-03-01

"A quality home builder"

Brian Carr

2017-02-15

"I contacted H-1 Construction for a partial home remodel and I was very impressed with the professionalism and quality of work. During the process a flaw was discovered with the original home build and Luke at H-1 corrected the problem, no hesitation and no outrageous price increase, he just handled it. If you want a quality job done right then H-1 is the way to go."

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Opening hours

Monday 7:30AM - 4:00PM

Tuesday 7:30AM - 4:00PM

Wednesday 7:30AM - 4:00PM

Thursday 7:30AM - 4:00PM

Friday 7:30AM - 4:00PM

Saturday -

Sunday -

Location

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H-1 Construction LLC