Sustainable 9 Design + Build

What Sustainable 9 Design + Build does

Sustainable 9 Design + Build is a private, founder-led custom home builder based in Minneapolis, Minnesota, founded in 2008 and operating with a small team (1-10 employees). The firm designs and builds high-performance residential and multifamily projects engineered to exceed standard building codes, integrating beyond-code construction techniques such as EcoSmart Stud thermal-break wall assemblies, exterior continuous insulation, triple-pane Low-E windows, energy recovery ventilators (ERVs), HempWool batt insulation, Warmboard radiant in-floor heating, and PV solar arrays paired with Tesla Powerwall 3 and SPAN Smart Panels. Homes are independently verified under DOE Zero Energy Ready Home, EPA Indoor AirPlus, Energy Star for Homes, and Minnesota Green Path Master Level certifications, with third-party testing performed by the Center for Energy and Efficiency (CEE).

The company generates revenue across seven streams: custom homes, pre-designed architecturally-inspired home templates, multifamily developments, interior design services, home renovations, development consulting (site selection, feasibility, investor decks), and transaction-fee real estate brokerage through sister company Harker+Woods Realty. The primary customer segment is high-net-worth individuals seeking bespoke luxury homes in the Minneapolis-Twin Cities metro, with secondary segments comprising developers/investors for multifamily projects and existing homeowners seeking performance renovations. Distribution is direct-to-consumer via the company website, model home tours during the Parade of Homes, and in-house design consultation; pricing is project-specific and not publicly disclosed.

Strategically, Sustainable 9 is broadening its addressable market by introducing pre-designed home templates, expanding into multi-unit developments (The Peninsula at Lake O'Dowd, Linden Green, Highland Bridge), maintaining Wisconsin licensure, and deepening an integrated partner ecosystem that combines building-envelope specialists, renewable energy providers, architectural firm Unfold Architecture, third-party verifier CEE, and the Harker+Woods Realty brokerage channel.

Name

Sustainable 9 Design + Build

Legal name

Sustainable 9 Design + Build

Website

https://sustainable9.com/

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

Sustainable 9 Design + Build is a Minneapolis-based, founder-led custom home builder (founded 2008, 1-10 employees) that designs and constructs high-performance, beyond-code residential and multifamily projects for luxury buyers in the Twin Cities metro, certified under DOE ZERH, EPA Indoor AirPlus, and Energy Star programs.

Ownership category

akta.pro rank

Product category

Custom Home Building

NAICS

Residential Building Construction (23611), New Housing For-Sale Builders (236117), Residential Remodelers (236118), Interior Design Services (541410)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Residential Green / High-Performance Home Construction (Net-Zero, Passive House) (IMAFABAH)

akta.pro secondary industries

Custom Home Building (IMAFABAC), Residential Luxury / High-End Home Construction (IMAFABAJ), Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI)

Keywords

• Sustainable home construction
• Custom home building
• Energy efficient residential
• Multifamily development services
• Home renovation design

Headquarters

HQ city

Minneapolis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Supply Chain

Revenue model

1. Custom Home Building: Full-service custom home design and construction from ground up, working with in-house architects, engineers, and artisans. Clients collaborate on eco-conscious design, innovative solutions, and energy-efficient performance.
2. Pre-Designed Homes: Collection of architecturally inspired, sustainably focused floor plans and exteriors. More affordable and quicker to build than fully custom homes while maintaining quality standards.
3. Multifamily Development: Innovative, sustainable, high-performance multifamily developments maximizing value and design for developers and investors.
4. Interior Design Services: Expert interior design services transforming spaces with personalized, stylish solutions elevating comfort, functionality, and beauty.
5. Home Renovations: Comprehensive renovation services improving performance, efficiency, and modern design of existing homes through their 5-phase process.
6. Development Services: Site selection, feasibility studies, investor decks, and acquisition consulting for development projects.
7. Real Estate Brokerage: Sister company Harker+Woods Realty provides certified real estate agent services for buying and selling homes, with access to company-built properties.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

Sustainable 9 Design + Build is a design-build firm that designs and constructs high-performance, sustainable custom homes, pre-designed homes, and multifamily developments in the Minneapolis metro area. The company also provides home renovation, interior design, real estate brokerage (through sister company Harker+Woods Realty), and development consulting services, all unified by beyond-code construction standards, third-party energy and indoor air quality certifications, and a focus on health-focused, energy-efficient building practices.

Product overview

Sustainable 9 Design + Build operates as a custom home builder offering a portfolio of interconnected services: Custom Homes and Pre-Designed Homes serve as the core product lines, complemented by Multifamily Developments, Renovations, and Interior Design services. The company differentiates through high-performance building materials including EcoSmart Stud, HempWool Insulation, Radiant In-Floor Heat, PV Solar Systems, and High-Performance Windows. Additional services include Real Estate through sister company Harker+Woods Realty, Development Services for site selection and feasibility, the S9+ Client Care Program for ongoing homeowner support, and The Ninth Edition Newsletter for thought leadership. All offerings are unified by a commitment to sustainable, energy-efficient construction exceeding standard building codes.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Homes

Quantifiable outcome

• Stonebridge Residence achieved -8 HERS rating (net energy producer), $5,900 annual savings, $245,700 saved over 30 years
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature7 records

Partnerships

14 partnerships are on record, tiered core and minor.

• EcoSmart StudcoreTechnology or IntegrationPartnership providing EcoSmart Stud thermal break system that swaps for traditional exterior studs, delivering 40% increase in wall-system performance with no changes to construction approach.
• WarmboardcoreTechnology or IntegrationPartnership for radiant in-floor heating systems delivering silent, consistent warmth through hot water tubing without moving parts or forced air.
• NABCEP-Certified Solar ProviderscoreTechnology or IntegrationPartnership with multiple full-service solar providers backed by NABCEP-certified professionals for PV solar array installation and system monitoring.
• Center for Energy and Efficiency (CEE)coreImplementation/ SI/ Consulting PartnerThird-party testing and certification partner providing progress inspections, feedback reports, energy modeling updates during construction, and independent verification of home performance certifications.
• Harker+Woods RealtycoreChannel Partner/ Reseller/ DistributorSister company providing certified real estate agent services for clients buying or selling homes, ensuring seamless transaction experience for company-built properties.
• Hennepin MademinorOthersMinneapolis-based studio specializing in hand-blown glass lighting crafted by local artists with heirloom-quality durability and sustainable local manufacturing.
• Visual Comfort & Co.minorOthersLighting manufacturer working with top designers since 1987, offering timeless pieces using natural materials and living finishes that age beautifully.
• Southern LightsminorOthersFamily-owned Minnesota business with 25,000 sq ft warehouse offering Lighting RX expert consultation, LED technology, and recyclable material options.
• RejuvenationminorOthersPortland-based lighting company practicing green manufacturing, making fixtures to order in their own factory and offering restored antique lights.
• Hudson Valley Lighting Group (HVLG)minorOthersGlobal lighting leader offering vintage to modern styles with eco-friendly building investments and responsible material sourcing practices.
• Modern FormsminorOthersBranch of WAC Lighting specializing in all-LED lighting and smart fans for efficient home cooling.
• LightologyminorOthersChicago-based lighting store and design partner offering Sustainable Design collection, dimmers, smart controls, and biodegradable packaging.
• CopperSmithminorOthersCustom copper hood manufacturer crafting handcrafted brass and copper range hoods for kitchen installations.
• Unfold ArchitecturecoreStrategic or Co-development PartnerArchitectural design firm collaborating on multiple projects including Waters Edge Residence, Bald Eagle Lake Retreat, Lake O'Dowd Retreat, and Montreal Avenue Residence.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Toll Brothers: National luxury homebuilder with broad portfolio including sustainability options and move-up/luxury segments. Relevant as a large-scale luxury competitor that could enter the certified green-niche with greater resources.
• Shea Homes: Large-volume national homebuilder with dedicated sustainability programs and energy-efficient community offerings. Comparable on luxury new-home demand pool; differs on scale and lack of bespoke envelope focus.

Direct peers

• Deltec Homes: National sustainable custom home manufacturer with a high-performance, energy-efficient envelope focus. Comparable in the combination of sustainability certification, custom configurations, and resilience-driven design.
• BPC Green Builders: New Jersey-based custom builder specializing in high-performance, energy-efficient and net-zero homes. Closest comparable in operating model: certified green envelope, custom design, and beyond-code construction targeting eco-conscious luxury buyers.
• Clarum Homes: Palo Alto-based builder of Passive House and net-zero custom homes on the West Coast. Directly comparable on envelope performance certifications, premium custom positioning, and beyond-code sustainability differentiation.
• Method Homes: Pacific Northwest modular builder producing prefabricated, high-performance sustainable homes. Comparable on certification stack and sustainability narrative; differs on factory-built vs. site-built delivery model.

Regional players

• TC Legend Homes: Seattle-area custom builder specializing in Passive House and net-zero residential construction. Highly comparable building-science approach and luxury custom positioning, though operating in a different regional market.
• Robert Thomas Homes: Twin Cities-based custom and luxury homebuilder. A direct local-market competitor in the same geography serving overlapping luxury buyer segments, though with a less stringent sustainability specialization.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@sustainable9
• Facebookfacebook.com/sustainable9
• LinkedInlinkedin.com/company/sustainable-9-design-build
• Instagraminstagram.com/sustainable9
• Xx.com/sus9designbuild

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sustainable 9 Design + Build