Basement Finishing and Remodels in Colorado

Serving Berthoud, Johnstown, Fort Collins, Loveland, Windsor, or surrounding Northern Colorado areas

Established in 1998 - Fully Licensed and Insured - Detail-Oriented

Tap Unused Space, Built for Fort Collins Homes 

With the right plan, your basement’s square footage can turn into your favorite part of the house.

At J Allen Construction Company, we specialize in basement remodels in Fort Collins, CO that actually work for how you live; whether that means adding a bedroom, building a hangout space, or dealing with radon exposure. We don’t just finish basements, we make them make sense.



What We Offer: Transformative Basement Remodel Services

No two basements are alike, and that’s why we don’t take a cookie-cutter approach. Whether you’re working with a wide-open blank slate or a low-ceiling space with weird corners, we’ll help you turn it into something useful, safe, and built to code.

Our basement remodeling services include:

  • Full basement finishing
  • Home theaters, gyms, and playrooms
  • Basement bathrooms and wet bars
  • Secondary suites or in-law spaces
  • Framing, drywall, insulation, and egress windows
  • Smart lighting, wiring, and media setups
  • Moisture control and radon mitigation
  • Custom built-ins and storage systems

Our Process: Clear from Demolition to Design

We follow a step-by-step process that keeps surprises to a minimum and progress on track.

  1. Site visit + evaluation – We check for moisture, radon, layout limitations, and structural concerns.
  2. Design + layout planning – You tell us how you want to use the space, and we map it out in detail.
  3. Detailed proposal – Transparent numbers, room by room.
  4. Permits + scheduling – We handle all city paperwork and inspections.
  5. Construction – Framing, plumbing, HVAC, and electrical done right the first time.
  6. Walkthrough + punch list – You point, we fix.
  7. Follow-up – We check in post-completion to make sure everything’s still holding up the way it should.


Permits & Basement-Specific Code in Fort Collins

Basement remodels in Fort Collins, CO, come with their own set of rules. Ceiling height, egress requirements, electrical spacing; it’s not one-size-fits-all.

We handle every bit of paperwork, coordinate with city inspectors, and make sure your project clears each hurdle without delay. Whether we’re cutting in a new egress or rerouting mechanical systems, we plan ahead so you’re not stuck mid-project waiting on a permit stamp. One less thing for you to chase down.



Smart Design & Material Choices for Basement Remodels in Fort Collins, CO


We’re not just picking pretty finishes; we’re building smart for where we live. In Northern Colorado, basements face cold winters, dry air, and the occasional springtime seep.

We’ll guide you toward finishes that hold up, look sharp, and make the most of your space.


Proudly Serving Fort Collins and Northern Colorado Communities

We don’t just finish basements in Fort Collins—we work across Northern Colorado, bringing the same level of craftsmanship and planning to every zip code we serve.

  • Fort Collins 
  • Loveland 
  • Windsor
  • Johnstown 
  • Berthoud 
  • Surrounding areas and unincorporated neighborhoods

If you’re nearby and thinking about a basement remodel, chances are we’ve already helped a neighbor of yours.



FAQ: Your Fort Collins Basement Remodel Questions

  • How long will the remodel take?
    Most full remodels take 8–14 weeks. Simpler jobs wrap sooner.

  • Can I stay in my home during construction?
    Yes. We’ll section off the work area and keep dust and disruption to a minimum.

  • Do I need an egress window?
    If you’re adding a bedroom, code says yes. We’ll handle it start to finish.

  • What about radon?
    We test every basement and install mitigation systems when needed.

  • Do you take care of plumbing and electrical?
    Absolutely. We work with fully licensed trades and coordinate everything.    

Testimonials

Marvin J

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We used J Allen for a complete kitchen and master bath remodel and was extremely pleased with the finished products. Jerry and his team provided innovative suggestions in the design and the attention to detail and workmanship was outstanding. We are now using J Allen to build our new home!

Richard S

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Great people working for you!!!

tj v

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I was working in Germany when we contracted J. Allen Construction to build our retirement home in Colorado. We selected J. Allen Construction due to their exceptional reputation for quality construction, professional integrity and commitment to maintain schedule. We knew that even though we weren't present to inspect construction, that Jerry Allen would build the house as if it was his own. Over the last 20 years J. Allen Construction has contacted us every year to inspect the house for necessary repairs or upgrades and used his quality construction crew and subs to perform any needed work. We highly recommend J. Allen Construction. Quality, Integrity, and Service are the fundamentals of this company.

Let’s Take Your Basement to the Next Level

If your basement’s been sitting half-finished or untouched for years, now’s the time to do something with it. We’ve helped families across Northern Colorado turn that unused square footage into something great.

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