435 Mountain Ave. Berthoud, CO 80513
435 Mountain Ave. Berthoud, CO 80513
Longmont has a personality all its own — a blend of historic charm, established neighborhoods, and steady modern growth — and good remodeling in Longmont, CO means respecting all of it. Lefort Built is a family-owned, Class A Licensed General Contractor based nearby in Berthoud, and we’ve spent years helping Longmont homeowners and businesses improve their spaces without losing what makes them special. Whether you own a century-old home near Old Town or a newer property out toward Prospect, we bring the craftsmanship and care that a city like this deserves. From the first conversation, you’ll notice the difference: we plan thoroughly, communicate clearly, and follow through — because a great-looking finished project means nothing if the process getting there was a mess.
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Longmont homes come in every era and style, and our home remodeling services are designed to work with what you’ve got. We finish basements into bright, usable living space, reimagine kitchens that have served their time, modernize tired bathrooms, and add rooms and sunrooms that expand how you use your home. Renovating an older Longmont property comes with its own quirks — and that’s where experience matters. We know how to update a home for modern living while respecting its original bones. Every project starts with a clear plan and fixed-cost line items, so you always understand the scope, the timeline, and the cost before the first wall comes down.
Have work going on elsewhere too? We also lead home remodeling in Boulder, CO and remodeling projects in Firestone, CO for clients across the area.
Longmont’s business community is one of the most dynamic on the Front Range, and a sharp, functional space helps you stand out. Our commercial remodeling team handles tenant improvements, office and retail buildouts, and full commercial renovations — all built around how your business actually operates. We’re familiar with the local permitting process and plan the work to minimize downtime and keep your operation running. From refreshing a storefront in the Main Street corridor to reconfiguring an entire office or production space, we keep the project organized and on schedule, delivering a finished result that reflects your brand and works as hard as you do.
For homeowners ready to build something entirely their own, our custom homes turn vision into reality. Building in Longmont means choosing from a community with deep roots and easy access to everything the Front Range offers — and we help you design a home that fits right in. We guide you through concept, design, budgeting, permitting, and construction, keeping you informed and in control the whole way. Want classic architecture that nods to Longmont’s heritage? A clean, modern build with mountain views? Energy-smart finishes for Colorado’s seasons? We tailor every detail to your taste and budget, and we hold ourselves to on-time, on-budget completion. The finished home doesn’t just look custom — it lives custom.
A city with this much history knows the value of doing things right — and so do we. As a Berthoud-based general contractor serving Northern Colorado, we pair the resources of a full-service builder with the accountability of a family-run company rooted in the same region. Longmont clients choose us for fast, accurate estimates, professional drawings, durable materials built for Colorado’s freeze-thaw climate, and crews who respect your property and leave it spotless. We understand the city’s codes, older housing stock, and neighborhoods, so your project moves forward smoothly instead of getting tripped up by avoidable surprises. And long after the work wraps, we’re still here — and still standing behind it.
Explore the full map of communities we serve across the Front Range.
From a basement you’ve always meant to finish to a commercial buildout or a brand-new custom home in Longmont, CO, Lefort Built is ready to bring craftsmanship and clear communication to every step of your project.
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Find answers to common questions about general contracting, home remodeling, construction costs, licensing, and permits in Longmont, Colorado.
Yes. Lefort Built Construction Company is based in Berthoud, just south of Longmont, and regularly serves homeowners and businesses throughout Longmont and Boulder County. Longmont is one of our primary service markets and we bring the same consistent on-site presence and craftsmanship we provide across Northern Colorado. We know how Longmont homes are built, how the city’s permit process works, and what the local housing stock requires.
Lefort Built provides home remodeling, basement finishing, kitchen and bathroom renovations, home additions, ADU construction, custom home building, commercial tenant improvements, office and retail build-outs, and full commercial renovations throughout Longmont. Whether you own a century-old home near Old Town, a newer property out toward Prospect, or a commercial space along Main Street, Lefort Built handles projects of every size and type with clear planning, honest communication, and consistent follow-through.
Lefort Built describes itself as a Class A Licensed General Contractor. The City of Longmont and unincorporated Boulder County maintain separate contractor licensing programs, so a license issued by one jurisdiction does not automatically authorize work in the other. Longmont requires contractors working within city limits to hold an appropriate City of Longmont contractor license. Before beginning your project, request Lefort Built’s current license information and verify the applicable credentials through the City of Longmont Building Inspection Division or Boulder County Contractor Licensing . Building permits and required inspections depend on the location and scope of the project.
Remodeling costs in Longmont are generally lower than Boulder but consistent with the broader Northern Colorado market. General ranges as of 2026: basement finishing $50 to $90 per square foot; kitchen remodel $30,000 to $90,000 depending on scope and finishes; bathroom remodel $12,000 to $45,000; home addition $170 to $340 per square foot. Lefort Built provides a fully itemized estimate specific to your home and project before any work begins so you can make informed decisions without guesswork.
Yes. Longmont has a significant inventory of older homes built in the early to mid-1900s, many of which require careful assessment before remodeling begins. Older homes often have knob-and-tube wiring, galvanized plumbing, asbestos-containing materials, and framing methods that differ from modern construction. Lefort Built knows how to evaluate and work with older Longmont properties, respecting the original bones while updating the home for modern living without unnecessary demolition or cost.
Longmont’s building department is generally efficient for standard residential projects, with permit review typically taking 2 to 4 weeks. Commercial projects and larger additions take longer. ADU permits in Longmont follow a specific application process through the city’s planning and building departments. Lefort Built prepares complete permit packages from the start and coordinates directly with the city to keep your project moving forward without unnecessary delays.
Yes. Longmont’s Main Street corridor and broader business community are among the most dynamic on the Front Range. Lefort Built handles commercial tenant improvements, office and retail build-outs, and full commercial renovations throughout Longmont. We understand local permitting and plan work to minimize downtime so your business stays operational during construction. Whether you are refreshing a storefront or reconfiguring production space, we keep the project organized and on schedule.
Call us at (720) 336-9935 or submit a request through the contact form on this page. We will schedule a free on-site consultation, review your project goals and site conditions, and provide a clear scope and estimate with fixed-cost line items so you always understand the plan and the price before work begins. We serve all Longmont neighborhoods and surrounding Boulder and Weld County communities.