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Sustainable Design Build (SDB) is a full-service design-build firm based in Denver, specializing in residential and commercial construction. Founded in 2017, the company began as a multi-family construction company building townhomes across Denver neighborhoods before shifting its focus toward helping individual homeowners achieve their dream homes. Today, SDB is recognized as an award-winning firm and voted Best Homebuilder in Denver, offering an integrated approach to design and construction under a single contract.
What Sets a Design-Build Firm Apart
Unlike traditional design-bid-build methods, the design-build model establishes a single point of responsibility from concept through completion. Early collaboration between architects, designers, engineers, and builders improves cost control, minimizes change orders, and allows construction phases to overlap when appropriate. This integrated structure enhances accountability, communication, and schedule efficiency across all project types.
As a full-service ADU builder and accessory dwelling unit builder, SDB manages every phase of a project through three clearly defined stages:
- Concept Phase – Discovery meetings, concept plans, floor plans, scope of work, and fixed project cost
- Design Phase – Permit submittal, structural and energy engineering, survey and soil testing, and managing the full permitting process
- Construction Phase – Construction start, city and engineering inspections, punchlist, project completion, and workmanship warranty
Clients work with one entity for both design and construction, simplifying communication and legal responsibility. Budget development, feasibility analysis, architectural design, and interior design finish selections all occur collaboratively, improving cost certainty before construction begins. This coordinated approach also means that in-house design teams work directly with field construction crews, minimizing delays, scope gaps, and unexpected change orders.
ADU Construction and Design in Denver
Accessory dwelling units are a particular strength of Sustainable Design Build. Years of experience have led to a thorough understanding of Denver's zoning codes and building requirements, making them a leading detached ADU builder, granny flat builder, garage conversion contractor, and in-law suite builder serving Denver and the surrounding metro area.
Designing an accessory dwelling unit requires more than simply fitting rooms into a smaller footprint. Every square foot must be carefully planned so the space feels comfortable, functional, and well-connected. The architectural team at SDB approaches ADU floor plans with a clear focus on how people will actually live in the space. The design team studies the property layout, access points, privacy considerations, and natural light before developing floor plans that make the most of available space.
Because ADUs often work within existing lot constraints and zoning requirements, thoughtful planning is essential. Living areas, kitchens, bedrooms, and bathrooms are arranged to create natural movement throughout the home while maintaining a sense of openness. Storage solutions, furniture placement, and kitchen functionality are all considered during the design phase. Windows and ceiling heights are used strategically to enhance natural light and make interiors feel larger and more inviting.
Denver homeowners interested in ADU construction should first verify their property's zoning district. The City of Denver's Zoning Map allows homeowners to search their address and confirm eligibility. A wide range of Denver zoning codes permit ADU construction, including designations such as E-SU-D1, U-SU-B1, S-MU-3, G-MU-5, and many others. SDB works with homeowners across all eligible zones and also offers solutions for properties that may face zoning limitations.
Full-Service Residential Construction Services
Beyond their work as an ADU contractor and backyard cottage builder, SDB offers a comprehensive range of residential construction services, including:
- Whole Home Remodels – Complete design, permitting, architecture, interior design, project management, and construction
- Home Additions – Custom additions designed and built to suit the homeowner's specific needs and lifestyle
- Custom Homes – Turn-key design and construction services for clients building from the ground up
The design-build process is not more expensive than hiring a traditional general contractor. By integrating design and construction under one roof, SDB is able to produce efficiencies that traditional construction methods lack, maximizing the value clients receive throughout the entire project. Efficiency in construction also means homeowners get back into their homes sooner.
With a cumulative knowledge of Denver's Community Planning and Development processes and seasoned construction expertise, Sustainable Design Build delivers tailored solutions that meet each client's specific goals — from a simple JADU contractor engagement to a full custom home build.
