We were HIGHLY impressed with GJ Koeppen from start to finish on a basement build-out to mother in-law suite. Work was done on time, project came in on budget, their crew is friendly and professional, and the quality of the work is excellent.
Any project will have a few minor snags; they responded and resolved those issues quickly and to our satisfaction. They stayed very communicative and transparent through all stages: from bid to administration/change orders (increased costs due to OUR changes/requests for preferred finishes) through actual work we were very impressed with all of their staff. We wouldn't hesitate to use them again on future projects, and have already recommended them to friends.
About Koeppen Construction
GJ Koeppen Construction and Remodeling is a company that aims to help homeowners fall in love with their homes again. They provide the creativity, expertise, and craftsmanship needed to transform spaces, whether it's a dream kitchen, a finished basement, or an accessory dwelling unit. The company is known for its family-centered values, excellent communication, and value-driven pricing.
Customers have been highly satisfied with the company's work. One homeowner praised the team's responsiveness and attention to detail, stating they will use Koeppen Construction again for future remodeling projects. Another customer was impressed with the team's suggestions for a more professional finish, even if it meant more work for them, and their ability to find solutions to obstacles that arose during the project.
A third customer, a self-described thorough person, was impressed with the team's dedication to matching the construction and aesthetics of an 18-year-old space, even going as far as researching and tracking down discontinued fixtures and finishes. The customer was thrilled with the final product and received many compliments on the workmanship.
Finally, a couple who underwent a major kitchen remodel with Koeppen Construction were delighted with the transformation of their dated 1970s kitchen into a bright, beautiful, and open space. They were impressed with the design, the skilled and punctual workers, and the excellent communication throughout the process, particularly from the project manager and the customer service representative.
Overall, GJ Koeppen Construction and Remodeling has a reputation for delivering high-quality work, excellent customer service, and a smooth remodeling experience for its clients.
Reviews
We used Koeppen Construction for a roughly 3-month remodel of our entire first level — kitchen, powder room, fireplace, flooring, stairs, and more — and highly recommend them.
The design phase made all the difference. Graham was incredibly helpful walking us through options. We struggled most with the kitchen layout, and he came up with the idea of adjusting window to give us more cabinet wallspace — a great trade-off of real value added for low additional cost.
They were thorough and careful upfront, so even though the project involved removing a wall and a large drywall feature, there were no surprises.
Execution was super smooth. We got regular updates throughout,… read full review
Good people, great work. Koeppen Construction is the kind of company you actually enjoy working with. Everyone on the team is professional, easy to communicate with, and genuinely cares about doing the job right.
They specialize in basements and ADUs, which are the kinds of projects that can really transform how you use your home. The craftsmanship they bring to every job is hard to beat. If you’ve been thinking about finishing that basement or adding an ADU, these are the people to call.
Photos
Hours
Monday 9AM - 5PM
Tuesday 9AM - 5PM
Wednesday 9AM - 5PM
Thursday 9AM - 5PM
Friday 9AM - 5PM
Saturday Closed
Sunday Closed
Good to know
- accepts credit cards
- open to all
Location
7845 Lookout Road, Longmont, CO 80503
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