Centennial Garage Conversions: Garage Conversion & ADU Construction Contractor
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We provide tailored solutions that turn existing spaces into functional living areas. Our team focuses on careful planning, skilled construction, and compliance with city regulations to ensure each project is completed with precision.

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Garage Conversions Services
Garage Bathroom Addition
Explore garage bathroom addition →Garage Conversion Planning
Explore garage conversion planning →Garage Conversion Renovation
Explore garage conversion renovation →Garage Door Infill
Explore garage door infill →Garage Floor Conversion
Explore garage floor conversion →Garage Guest Room Conversion
Explore garage guest room conversion →Garage Gym Conversion
Explore garage gym conversion →Garage Home Office Conversion
Explore garage home office conversion →Garage Insulation
Explore garage insulation →Garage Kitchenette Installation
Explore garage kitchenette installation →Garage Living Room Conversion
Explore garage living room conversion →Garage Storage Conversion
Explore garage storage conversion →Garage Studio Conversion
Explore garage studio conversion →Garage Utility Room Conversion
Explore garage utility room conversion →Garage Window Installation
Explore garage window installation →Types of ADU and Garage Conversions
Detached ADUs
A detached ADU is a separate structure built on the same lot as the main home. It gives full privacy and works well for rental units, guest houses, or multigenerational living.
We often recommend detached ADUs for larger lots where there is enough open space. These units can include a kitchen, bathroom, and living area, making them fully independent.
Detached ADUs also allow flexible design. We can match the style of the main home or create a modern look. Homeowners often use these units to generate rental income while keeping their main residence private.
Attached ADUs
An attached ADU shares at least one wall with the main home. This option is often more cost-effective since it uses existing structures and utilities.
We build attached ADUs by adding to the side, rear, or even above the main house. They work well for families who want extra living space without building a separate structure.
Attached ADUs can include private entrances or shared access depending on the layout. They are ideal for extended family members who want to live close but still have their own space.
Garage-to-ADU Transformations
We upgrade the garage by adding insulation, plumbing, electrical, and finishes to meet code requirements. This creates a fully functional living unit within the footprint of the home.
Garage conversions are especially effective in areas with limited lot space. They provide a cost-efficient way to add housing without expanding the property.
Our Proven Process
We use a step-by-step approach that ensures every project moves forward with clarity and efficiency. Each stage focuses on accuracy, compliance, and design choices that match the property and the owner’s goals.
Initial Consultation and Site Assessment
We begin by meeting with you to understand your goals for the space. During this consultation, we ask specific questions about how you plan to use the ADU or converted garage. This helps us identify the best layout, features, and budget range.
Next, we visit the property for a site assessment. We check structural conditions, utility connections, and zoning requirements that may affect the project. This step allows us to spot potential challenges early and recommend practical solutions.
Custom Design and Planning
Once we understand the property and your needs, we begin the design process. We create layouts that make the most of the available space while meeting building codes. This includes room placement, storage options, and access points.
We also focus on finishes and features that improve comfort and function. For example, we may suggest energy-efficient windows, durable flooring, or built-in cabinetry. These choices add long-term value and reduce maintenance.
Our planning also involves a detailed project timeline and cost estimate. We break down the steps into clear phases so you know what to expect. This transparency helps you make informed decisions before construction begins.
Permitting and Approvals
Our experience with city departments allows us to anticipate common issues. We prepare documents carefully and submit complete applications, which reduces the risk of rejection. This step ensures that construction can start on schedule and without legal complications.
Quality Materials and Craftsmanship
We focus on building spaces that last by using durable products and precise construction methods. Our approach combines reliable materials with skilled workmanship to create safe, functional, and comfortable living areas.
Premium Building Materials
We select materials that provide strength, safety, and long-term value. For structural work, we use engineered lumber, reinforced concrete, and steel hardware that meet or exceed local building codes. These choices help us deliver solid foundations and framing that resist wear.
For interiors, we rely on moisture-resistant drywall, high-grade insulation, and durable flooring such as tile, laminate, or engineered wood. These materials reduce maintenance needs and stand up well to daily use.
We also focus on finishes that balance function and appearance. Cabinets, countertops, and fixtures come from trusted suppliers known for consistent quality. By using proven products, we reduce the risk of costly repairs and replacements later.
This ensures you know exactly what goes into your project and how it will perform.
Energy-Efficient Solutions
We build with energy efficiency in mind to lower utility costs and improve comfort. Our projects often include double-pane windows, insulated doors, and advanced roofing systems that help regulate indoor temperatures.
Lighting and electrical systems also matter. We recommend LED fixtures, energy-efficient appliances, and smart controls that save energy without reducing performance.
We can also prepare units for solar panel integration by adding proper wiring and roof support. This option makes it easier to add renewable energy in the future.
By combining these features, we create ADUs and garage conversions that are both cost-effective and environmentally responsible.
Maximizing Property Value and Functionality
We focus on creating spaces that add real financial benefits and improve daily living. By turning unused garages into ADUs, we help homeowners make better use of their property while opening new opportunities for income and comfort.
Increasing Rental Income
We design units that meet city codes, include private entrances, and maximize square footage. These features make the space more appealing to potential tenants.
Rental income also helps offset mortgage costs or fund property improvements. Many homeowners see an increase in property value because buyers recognize the benefit of having a legal rental unit already in place.
By investing in quality construction and thoughtful layouts, we make sure the ADU is not only functional but also competitive in the rental market.
Expanding Living Space
We build layouts that connect seamlessly with the home or remain separate for privacy. Options include:
Guest suite for visiting family
Home office for remote work
Studio or hobby room for personal projects
Adding usable square footage improves comfort and increases resale value. Buyers often see extra living space as a major advantage, especially when it is designed with modern finishes and proper permits.
Our goal is to make every square foot practical and adaptable for long-term use.
Garage Conversions for Centennial Properties
Centennial has a varied housing stock. The 2023 American Community Survey five-year estimate places the median year its housing was built at 1982. That is useful background for a project, but the condition and layout of your own property should guide the work.
For garage conversions in Centennial, start with the rooms and surfaces you have. Measure access routes, identify the finishes you want to keep and note where new work meets existing walls, floors or fittings. Planning those transitions makes the finished project feel like part of the property.
Planning a project in Centennial or nearby Aurora, Berkley, Castle Pines, Castle Rock and Cherry Creek? Include the project location when requesting a quote so access and scheduling can be discussed from the start.
Housing reference: U.S. Census Bureau, 2023 ACS five-year estimates, table B25035.Get Started With Garage Conversions
Tell Centennial Garage Conversions about your project in Centennial. Share the scope, measurements and finish you have in mind to request a quote.
Call (720) 599-2907 Free quoteFrequently Asked Questions
What types of ADU designs does Centennial Garage Conversions offer?
We provide designs for garage conversions, detached ADUs, attached ADUs, and junior ADUs. Layouts can be customized for rental units, guest housing, or extended family living.
Can Centennial Garage Conversions handle both the design and construction phases?
Yes, we manage the entire process from initial planning and drafting to construction and final approval. This approach helps keep the project organized and efficient.
What is the estimated cost range for an ADU or garage conversion project?
Costs vary based on size, design, and finishes.
How does Centennial Garage Conversions ensure compliance with local building codes?
We work directly with city inspectors and submit all required plans for approval. Our team follows structural, electrical, and plumbing codes to ensure the ADU passes inspections and meets safety standards. Navigation: ServicesGarage Conversion to Living Space Garage Conversion to ADU (Accessory Dwelling Unit) Garage Kitchen Conversion Garage Bathroom Installation Garage Soundproofing Garage Electrical Wiring & Installation Garage Plumbing & Drainage Installation Garage Flooring Installation Garage Wall Framing & Drywall Installation Locations ServicesGarage Conversion to Living Space Garage Conversion to ADU (Accessory Dwelling Unit) Garage Kitchen Conversion Garage Bathroom Installation Garage Soundproofing Garage Electrical Wiring & Installation Garage Plumbing & Drainage Installation Garage Flooring Installation Garage Wall Framing & Drywall Installation Locations Contact Us: 746 Ceres Avenue Business Hours: