J ALLEN  CONSTRUCTION COMPANY: CUSTOM HOME BUILDERS IN FORT COLLINS

  • Custom Home Builds
  • Home Remodels
  • Home Maintenance
  • Home Additions

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

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

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Get the Home of Your Dreams

Are you looking for a custom home builder? You can create the perfect home with help from J. Allen Construction Company. Our custom construction meets your needs, and our detail-oriented team handles everything.


If you're interested in quality, just look at the gallery below to see examples of our work. Fill out the online form to work with a dependable home maintenance service company in northern Colorado and beyond.

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Custom Home Construction Contractors

When it comes to your home, quality matters. That's why you need a home contractor you can trust for building, renovations, and maintenance. At J. Allen Construction Company, we provide quality, custom construction services for your home.


You don't need to worry about anything when you hire us. Your investment with us is protected because we're fully licensed and insured. Contact us if you need a home maintenance company in Northern Colorado.

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A large house is sitting on top of a hill with mountains in the background.

Local and Family-Owned Since 1998

There are other construction crews in the area, but we do things the right way at J. Allen Construction Company. Our owner has 40 years of experience with home maintenance companies in Northern Colorado, Southern Wyoming and surrounding areas. He's involved with every job to ensure quality results every time.


We've used the same contractors for over 20 years, and we take pride in the quality of our work. There's a reason customers keep coming back to us!

Our Home Construction Services

Ready to Work With One of the Top Home Maintenance Companies in Northern Colorado, Southern Wyoming and surrounding areas?

For over 25 years, J. Allen Construction Company has been the home maintenance service company Northern Colorado residents have relied on for all their home project needs. From new builds to regular maintenance needs, our experts are prepared to work with you to achieve your vision. If you're looking to take the next step in your home renovations, don't hesitate to give our skilled crew a call today. We look forward to constructing the home of your dreams.

Here's what our satisfied customers are saying...

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Richard S

Great people working for you!!!

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Marvin J

We used J Allen for a complete kitchen and master bath remodel and was extremely pleased with the finished products. 

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By Alex Wells October 30, 2025
Thinking about a remodel or a new build in Colorado? The state now has a Model Low Energy and Carbon Code (MLECC) that raises the bar for comfort, indoor air quality, and long-term operating costs. It is not about making projects harder. It’s about making homes perform better, last longer, and cost less to run. The idea is simple. When your city or county next updates its building codes after July 1, 2026, it will need to adopt the MLECC or go stricter. That means future permits will check a few more energy and ventilation boxes than you may be used to. Quick Answer: Colorado’s New Model Low Energy and Carbon Code: What You Need to Know After local code updates on or after July 1, 2026, projects follow Colorado’s Model Low Energy and Carbon Code . Expect better comfort, healthier indoor air, and stronger efficiency with flexible compliance options and demand-response capable equipment. Why Colorado Built This Code In 2022, state lawmakers passed HB22-1362 , which created an Energy Code Board to draft modern standards. The law directed the Board to publish the model code and set the adoption framework so local governments can use it the next time they refresh their building codes. The law set minimum energy code requirements while preserving local adoption. That creates more consistency across Colorado while keeping room for local choices. What does that mean for you? When your city or county updates its building code after July 1, 2026, it must adopt the MLECC or adopt something that performs even better. You’ll see clearer expectations for insulation, air sealing, equipment efficiency, wiring readiness, and ventilation on plan sets and inspections. What Changes for New Homes Expect a practical checklist that nudges projects toward better envelopes and smarter equipment. Highlights you may encounter: Envelope quality: Tighter air sealing and right-sized insulation keep temperatures steadier and cut drafts. Heating and cooling options: Both all-electric and mixed-fuel designs can comply. The code offers clear compliance paths and credits that make high-efficiency electric heat and water heating straightforward to document Demand response capable systems: New construction must include heating, cooling, water heating, and lighting controls that are demand response capable where required. These systems can respond to a utility signal during peak demand and may qualify for utility programs. Projects must meet the statewide model’s performance or prescriptive options set by the adopting jurisdiction. Check with your building department for any local amendments that apply to larger homes. For many families, high-efficiency heat pumps are attractive because one system delivers heating and cooling and performs well in cold climates. That can mean steadier comfort and lower utility bills over time. This direction aligns with Colorado’s building decarbonization goals . What Changes for Renovations, Additions, and ADUs Not every small refresh triggers major upgrades, but additions and significant remodels will interact with the MLECC once your jurisdiction adopts it. Counties and cities will use the model when updating their codes , which apply to both new construction and certain renovation scopes. The exact thresholds for what is considered an “ addition ,” “alteration,” or “substantial improvement” are set in local code text, so it is important to clarify with your building department. Two quick examples to make this real: Kitchen gut with new exterior openings: Likely triggers envelope details around new walls or windows, plus updated ventilation and right-sized equipment checks. Small bathroom refresh with fixtures only: Often, minimal energy code impacts, though local rules may still require ventilation or lighting updates. If you are planning an ADU, budget time for envelope, ventilation, and electrical capacity planning. ADUs are small, which makes good air sealing and balanced ventilation especially important for comfort and indoor air quality. Homeowners should also verify panel capacity and plan for “electric-ready” needs. The Upside for Homeowners A better code should feel better to live with. Expect steadier temperatures, quieter equipment, cleaner indoor air, and lower utility costs over time. Comfort you can feel: Tighter shells and right-sized systems mean fewer hot and cold spots. Quieter operation: Modern high-efficiency systems often run more quietly. Healthier indoor air: Balanced ventilation and filtration reduce pollutants and help manage humidity. Lower utility costs over time: Efficiency gains cut energy use and utility costs , and demand-response capability can qualify for utility programs. Resilience: Homes that hold temperature better ride out outages and heat waves more gracefully. Future-ready value: Electric-ready wiring and efficient equipment position your home for future technology and market expectations. Timeline and Who Must Adopt Here is the timing that matters for planning: Now through June 30, 2026: If a city or county updates its current code in this window, it must adopt an energy code that is at least equivalent to the 2021 IECC and include electric-ready and solar-ready provisions developed by the Energy Code Board. Starting July 1, 2026: When a city or county next updates any of its building codes, it must adopt the Model Low Energy and Carbon Code or an equivalent that achieves equal or better energy and carbon performance. The MLECC becomes the new floor at the time of each local update. Your permit will follow whatever code is in force locally when you apply. This staggered approach keeps projects moving while aiming for a consistent statewide performance level. Local adoption dates will not all be the same, so always check what is current in your jurisdiction. Cost, Equipment, and Practical Planning Upfront costs can shift depending on your starting point and project type. Many buyers offset new equipment or envelope measures with lower monthly utility bills and potential incentives. The code keeps compliance pathways flexible so builders can choose the mix that fits the design. Before you design too far, line up the basics: Energy goals: Decide whether you want all-electric or mixed fuel. Both can comply. Panel capacity: Ask your electrician to assess headroom for heat pumps, heat pump water heaters, induction, and EV charging. Ventilation plan: Specify balanced ventilation with filtration. This is a comfort and health play as much as an energy one. Envelope check: Air sealing, insulation, and high-performance windows pay you back daily. Utility coordination: Explore demand response programs and rebates that match code-ready equipment. Final Thoughts The Model Low Energy and Carbon Code is about smarter homes and lower bills, not hoops for the sake of hoops. With a clear plan, you will get a house that feels better year-round, breathes better, and costs less to operate. When you are ready, let us talk about how a code-smart plan can shape your project so construction is smooth and the results are worth it.
By Alex Wells August 19, 2025
When we talk about the “best ROI” in home improvements, we’re really talking about projects that give you more than just bragging rights; they put value back into your pocket when it’s time to sell. Whether it’s small upgrades or well-planned home additions , not every shiny change pays for itself, so the trick is knowing which ones add comfort today and curb appeal tomorrow. The Short Answer: Top ROI Home Upgrades in Northern Colorado In 2025, the projects with the biggest bang for your buck are practical, not flashy, think new garage or entry doors, refreshed kitchens and baths, and smart energy updates. These aren’t wild remodel trends , but proven winners for both buyers and budgets. High-ROI Upgrades (based on latest data) When it comes to adding value without overspending, a few projects consistently rise to the top. These are the ones we see delivering strong returns for homeowners: Garage Door Replacement – Often returns around 190% of its cost and instantly sharpens curb appeal. Steel or High-Quality Entry Door – Adds security, style, and a warm first impression. According to realtor.com , you can expect to recoup around 100% of your investment if you go with a steel door. Simple Landscaping Upgrades – Fresh mulch, trimmed shrubs, and seasonal flowers can return double what you put in. Hardwood Floor Refinishing – Brings back the beauty underfoot, with payback often above 140%. Minor Kitchen Updates – Swapping cabinet hardware, adding a fresh backsplash, and updating lighting hold steady at about 60% ROI. These aren’t full-blown home renovations, just smart, targeted upgrades buyers notice right away. Emerging Value Drivers & Original Insights Not all value comes from traditional upgrades. We’ve noticed a growing payoff in energy-efficiency improvements, things like heat-pump HVAC systems, better insulation, and reflective roofing. They might not top the charts in raw ROI, but they’re increasingly important to buyers conscious of rising utility costs. ROI also isn’t one-size-fits-all. In a downtown condo, an assigned parking space might add more value than a fancy patio. In a suburban setting, the reverse could be true. That’s why we always suggest blending national ROI data with a local reality check. A trusted real estate pro or appraiser can help you weigh those nuances before you pick up a hammer. Room-by-Room ROI Guide When we walk through a house with ROI in mind, we’re looking for high-impact changes that don’t drain the budget. Kitchen: Skip the gut job unless you’ve got a solid reason. Cabinet refacing, updated hardware, a crisp backsplash, and good lighting will often do the trick. Bathroom: Reglaze instead of replace, re-grout tile, and swap in water-saving fixtures for an instant refresh. Living spaces & bedrooms: Neutral paint works wonders, and adding thoughtful lighting can make a room feel bigger. Exterior: Replace worn doors, refresh siding, and give the landscaping a quick spruce-up. The goal isn’t to chase every shiny remodel trend; it’s to make the home feel well-kept, move-in ready, and universally appealing. Pre-Sale Improvement Checklist Before you put up that “For Sale” sign, give your place a quick, high-impact tune-up: Deep clean and clear the clutter Refresh walls with neutral paint Power-wash siding, driveway, and walkways Replace or polish entry and garage doors Add simple kitchen and bath upgrades Install or highlight energy-efficient features  Final Thoughts on Northern Colorado’s Highest-ROI Home Projects The best ROI comes from thoughtful choices, not last-minute splurges. Use these guidelines to steer your updates, whether you’re eyeing quick fixes or bigger home renovations . And remember, ROI matters, but so does how much you enjoy living there in the meantime. Talk with a local contractor or real estate professional before starting your next project. Our team at J Allen Homes can help you weigh costs, timing, and return potential so you can invest wisely and confidently in your home. Request an estimate today!
By Marilyn Allen June 30, 2025
We know there’s a certain pride in rolling up your sleeves and making your home truly yours. In Colorado, that spirit runs deep. From mountain cabins to suburban homes, many of us take the DIY route to save money, customize our space, or just enjoy the challenge. But let’s be honest: our climate and terrain aren’t always cooperative. High-altitude sun, deep freezes, and sudden storms mean some projects need extra planning. That’s why we put together this guide—to help you choose home improvements that aren’t just “Pinterest-pretty,” but realistic, durable, and well-suited to Colorado living. Quick Answer: What are the Best DIY Home Improvement ideas for CO? We recommend renovation projects like insulation upgrades, xeriscaping, deck builds, and low-VOC painting; each chosen for Colorado’s unique climate and lifestyle. The best DIY projects boost comfort, efficiency, and value while fitting our state’s seasonal demands. How to Choose the Right DIY Project in Colorado We always tell folks: before you pick up a hammer or paintbrush, take a beat to plan. Colorado’s weather isn’t forgiving of shortcuts. Think about: Skill level : Be realistic. A complex remodel may need professional help. Budget : Costs can climb fast if you’re not careful. Permits : Check local rules. Some projects legally require them. Seasonal timing : Don’t dig post holes in frozen ground or seal a deck in a surprise snow. Safety : Altitude and weather can make even simple jobs tricky. Careful planning now saves you headaches—and extra trips to the hardware store—later. Top 10 DIY Home Improvement Ideas for Colorado Homes We know you want ideas that work here , not generic tips ripped from a magazine. Here are 10 solid projects that fit Colorado’s climate, lifestyle, and challenges: Interior Painting with Low-VOC Paints Protect your indoor air quality at altitude, where ventilation can be tricky. Lighter colors reflect our bright natural light and keep rooms feeling open. Weatherstripping and Insulation Upgrades Don’t let frigid winter winds or summer heat sneak in. Upgrading old weatherstripping or adding attic insulation is budget-friendly and cuts utility bills. Xeriscape Landscaping Water’s precious here. Swap thirsty lawns for native plants and mulch. Xeriscaping looks great and survives dry spells without constant watering. Building or Refinishing a Deck Colorado sun is intense. Use UV-resistant stains and check local code for railing heights. Permits may be required—always confirm before starting. Installing Energy-Efficient Lighting Swap old fixtures for LEDs or smart bulbs. Lower energy bills, better lighting, and it’s often a one-afternoon project. Tiling or Backsplash Updates Kitchens and baths benefit from easy-to-clean surfaces. Just remember our dry air can cause some grout to cure faster than you expect—plan your working time accordingly. Garden Beds or Vertical Gardening With a short growing season, raised beds warm faster in spring. Vertical setups make use of tight spaces and maximize sun exposure. Basement Waterproofing and Sealing Spring runoff can seep into foundations. Applying waterproof sealant or installing better drainage channels helps protect your investment. Upgrading to Smart Thermostats Colorado’s temperature swings mean HVAC works hard. A smart thermostat learns your habits and can save you serious cash over time. Garage or Mudroom Storage Solutions For the skier, gardener, cyclist, or dog lover, organized storage is sanity-saving. Wall racks, benches, and overhead bins help keep dirt and gear in check. Permitting and Safety Tips for Colorado DIYers We’ve seen too many projects hit a wall because someone skipped the paperwork or overlooked safety. Don’t let that be you. Before you start, consider: Permits: Many cities require them for decks, electrical, or plumbing work. Always check first; fines aren’t fun. Local codes: These exist for good reasons, like structural safety and fire prevention. Call 811: Always know what’s underground before you dig. Fire risk: Clear vegetation and use fire-safe materials when you can. Planning for safety isn’t overkill—it’s smart, and it keeps you, your family, and your neighbors secure. Seasonal Planning Calendar for Colorado DIYers We know Colorado’s seasons don’t always follow the rules, but timing your projects right can save you hassle (and money). Here’s how we think about it: Spring: Exterior painting and staining before summer sun gets too intense Garden prep and planting after last frost Summer: Deck builds and landscaping Concrete work (cures well in dry heat) Fall: Insulation and weatherstripping upgrades Sealing driveways or decks before freeze-thaw sets in Winter: Interior painting Planning and design for big spring builds Colorado’s climate keeps us on our toes. A little seasonal planning means fewer surprises when weather turns on a dime. FAQs: What Colorado Homeowners Ask Most About DIY We hear these questions a lot, so let’s clear them up: Do I need a permit? Often, yes—especially decks, electrical, plumbing. How do I plan for winter work? Focus on interior projects. Where can I rent tools? Local hardware stores, rental centers. How do I budget? Plan for 10–20% extra for surprises; it happens to all of us. Should I do an addition myself? We recommend calling in the pros for major jobs, but yes, as long as you know what you are doing, you could build a DIY addition. Final Thoughts on Top Colorado DIY Projects We know tackling DIY projects in Colorado can feel like planning for four seasons in a day. That’s why we always say: start small, plan carefully, and don’t be afraid to ask questions. We’d love to hear how your projects turn out; share your successes, surprises, and lessons learned with neighbors or local forums. After all, the best way to make your house feel like home is to put your own work and heart into it.
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