Arise Constructions is a Denver, CO full-service residential contractor offering custom homes, ADUs, remodels, additions, and structural work. They use the JobTread portal for transparency and back all work with a minimum one-year warranty.
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Murphey's Hammer is a Denver-based contractor specializing in ADUs, home additions, garage builds & outdoor living spaces. Serving Denver Metro, Aurora, Littleton & more with personalized, quality craftsmanship.
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Verified Builders is a licensed Denver remodeling company offering ADU construction, kitchen & bathroom remodeling, basement finishing, and custom home builds. Serving Denver, Littleton, Aurora & more since 2016.
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EcoMod is a Denver-based ADU builder offering sustainable, affordable housing using repurposed shipping containers. Models range from 320–800 sq ft, starting at $64,000. Homes are 9x stronger, last 200+ years, and cut construction costs by 30%.
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Factor Design Build is a Denver & Boulder, CO design-build firm with 30+ years of experience in luxury home remodeling, custom new homes & additions. Their integrated team of architects, designers & builders ensures seamless, on-budget results.
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AAA Home Improvements is a Denver ADU contractor building detached, garage conversion, basement, above-garage, and attached ADUs across the Front Range. They manage design, permitting, and construction for homeowners seeking rental income, multigenerational living, or added property value.
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ADU4U is a veteran-owned ADU builder in Denver offering full-service accessory dwelling unit construction, planning, real estate, and financing. Build a granny flat, in-law suite, or detached ADU for rental income or multigenerational living.
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O'Brien Construction LLC is an ADU contractor specializing in design, engineering, and construction of accessory dwelling units. Services include detached ADUs, additions, and design-assisted builds, with free consultations available.
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Prospect 30 Eight Construction proudly offers its high-quality building services to the charming community of Littleton. Known for its unique blend of suburban tranquility and easy access to metropolitan conveniences, Littleton is the ideal setting for a custom home, home addition, and Accessory Dwelling Unit (ADU).
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AAA Home Improvements is a Denver ADU contractor building detached ADUs, garage conversions, basement units & in-law suites across the Front Range. They manage design, permitting & construction for homeowners in Denver, Lakewood, Arvada & Littleton.
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TinyMod (TMOD™) is an offsite development partner offering feasibility analysis, project management, and factory coordination for builders. Services support ADUs, modular communities, BFR, and missing middle housing with up to 60% faster build times.
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A2Z Builders is a Denver-based, family-owned Class A General Contractor with 16+ years of experience. They specialize in ADU construction, custom home builds, kitchen, bathroom, and basement remodeling across the Denver metro area.
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Studio Home by Studio Shed offers custom & prefab ADUs across Texas, including San Antonio, Austin, Dallas & Houston. Units range from studios to full living spaces. Permit costs vary: Dallas $3K–$8K, Houston $2.5K–$7.5K.
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Denver homeowners can boost property value and earn rental income by building an ADU. 5280ADU, a division of Revo Renovations, offers full-service ADU construction, garage conversions, remodels, and more across Denver County.
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Rescue Restoration specializes in constructing Additional Dwelling Units (ADUs) in Colorado. Their lead chief estimator can help design a custom ADU to fit your needs and financial goals. They are the lead resource in the Denver Metro area when it comes to constructing attached, detached, or basement ADUs.
read moreIf you're considering adding an accessory dwelling unit (ADU) to your property in Longmont, Colorado, you're making a smart investment. With Longmont's growing population and increasing housing demand along the Front Range, ADUs have become one of the most popular ways to maximize property value, generate rental income, or create space for multigenerational living. Finding the right ADU contractor in Longmont is the critical first step toward turning your vision into reality.
Longmont offers a unique blend of small-town charm and proximity to Boulder and Denver, making it a highly desirable place to live. The city has seen consistent growth, and rental demand remains strong. Building an ADU in Longmont allows homeowners to:
Before breaking ground, it's essential to understand Longmont's ADU regulations. The City of Longmont permits ADUs in most residential zones, but there are specific rules that experienced ADU contractors in Longmont must navigate carefully. Key regulations include:
A knowledgeable Longmont ADU contractor will be familiar with the city's permitting process through the Longmont Building and Safety Division, ensuring your project meets all local codes and avoids costly delays.
Skilled ADU builders in Longmont, CO can construct several types of accessory dwelling units to suit your property and goals. The most common types include detached ADUs (standalone backyard cottages), attached ADUs (additions connected to the main home), garage conversions, and basement ADUs. Each type comes with its own set of construction considerations, costs, and permitting requirements.
When selecting an ADU contractor in Longmont, Colorado, look for professionals with proven local experience, proper licensing, and a strong portfolio of completed ADU projects in the area. The best contractors will guide you through design, permitting, construction, and final inspection — delivering a high-quality ADU that complies with all Longmont municipal codes and maximizes your investment.