Sustainable Living Innovations

What Sustainable Living Innovations does

Sustainable Living Innovations (SLI) is a Seattle-based building technology company founded in 2008 by architects Arlan Collins and Mark Woerman. The company manufactures complete, panelized multifamily residential buildings using a proprietary system in which wall and floor panels are produced offsite at SLI's Tacoma, Washington factory with all mechanical, electrical, and plumbing infrastructure pre-installed, then delivered and assembled on-site by SLI field crews. The system supports buildings from 1 to 40 stories and is positioned around sustainability, with claimed economics of at least 10% lower construction cost and 20-30% lower operating expense relative to conventional construction.

SLI's product portfolio extends beyond physical panels into four proprietary software applications spanning the building lifecycle: SLI Digital Twin for operational and performance modeling, SLI Configurator for point-and-click ordering and design feasibility, SLI Track for supply chain and installation visibility, and SLI Connect for tenant and facility management. Notable completed and in-progress projects include the 47+7 building in Seattle's University District (2015), the 303 Battery Net Zero Energy multifamily tower in Belltown (groundbreaking 2021, acquired by Equity Residential), and the Burbridge Place permanent supportive housing project for DESC. The company holds 16 granted patents covering construction systems, wall panels, slab and lift-slab methods, and prefabricated utility infrastructure, with additional filings pending on modular kitchens, bathrooms, stairwells, and integrated building platforms.

SLI monetizes through three revenue streams: direct building system sales to developers and housing organizations, sustainable building development for sale or acquisition, and licensing of its patented building technology. The company sells directly to enterprise customers through a field-sales model targeting multifamily residential developers and affordable housing organizations, primarily in the Pacific Northwest. Institutional investors include Goldman Sachs, Equity Residential, Hunt Companies, Renova Capital Partners, MultiGreen, IX, and Moss, with cumulative disclosed funding of approximately $81M across rounds in 2018 and 2022, and a March 2023 letter of intent with Churchill Capital Corp V indicating potential public-market access. The management team is led by co-founder and CEO Arlan Collins, with CFO Robert Doherty (former JPMorgan Chase and Renova Capital Partners) overseeing institutional finance and capital strategy.

Name

Sustainable Living Innovations

Legal name

Sustainable Living Innovations, Inc.

Website

https://sli.co

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

51–100 employees

Short description

Sustainable Living Innovations (SLI) is a Seattle-based building technology company that designs, manufactures, and assembles patented panelized building systems for multifamily residential developers and affordable housing organizations, combining offsite factory production with proprietary lifecycle software.

Ownership category

akta.pro rank

Product category

Prefabricated Modular Building Systems

NAICS

Prefabricated Wood Building Manufacturing (321992), Residential Building Construction (2361)

SIC

Prefabricated Wood Bldgs & Components (2452), Fabricated Structural Metal Products (3440)

akta.pro primary industry

Senior Living & Assisted Living Facility Construction (IMAFACAJ)

akta.pro secondary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

Keywords

• Modular construction systems
• Prefabricated building panels
• Multifamily housing construction
• Net zero buildings
• Panelized building technology

Headquarters

HQ city

Seattle

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Building System Sales: SLI manufactures and sells complete tech-enabled building systems to developers. Buildings are designed, produced in their Tacoma factory, and assembled on-site for customers.
2. Sustainable Building Development: Development of net zero energy multifamily residential buildings for sale or acquisition
3. Technology Licensing: Patent-protected building system technology licensed to developers and builders

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Sustainable Living Innovations (SLI) manufactures and sells complete tech-enabled panelized building systems for multifamily residential construction. Wall and floor panels are assembled in SLI's Tacoma, WA factory complete with mechanical, electrical, and plumbing infrastructure pre-installed, then delivered to job sites for rapid on-site installation by SLI field crews. The company complements these physical building systems with a suite of proprietary software applications spanning the entire building lifecycle.

Product overview

Sustainable Living Innovations offers a vertically integrated building technology platform consisting of core panelized building systems for multifamily residential construction, complemented by four proprietary software applications (SLI Digital Twin, SLI Configurator, SLI Track, and SLI Connect) that span the entire building lifecycle from design and prototyping through manufacturing, construction, and ongoing building operations. The SmartLiving App provides residents with a connected living experience. This platform-plus-modules architecture enables standardized yet flexible building design, manufacturing, and management with a focus on sustainability and reduced operational costs.

Differentiator

Problem solved

Functional benefit

Products and services

• SLI Building Systems Patented panelized building systems for multifamily residential construction that incorporate all major requirements for rapid on-site installation. Buildings are designed, manufactured offsite in SLI's Tacoma factory with MEP infrastructure pre-installed, and assembled on-site by SLI field crews. Supports heights from 1 to 40 floors with exo-skeleton load-bearing panel design.
• SLI Digital Twin Software platform that produces a digital replica (twin) of SLI buildings. Brings together data from building operations and historical performance data to digitally model and track every aspect of the building, providing data and analytics for owners and operators.
• SLI Configurator
• SLI Track
• SLI Connect
• SmartLiving App

Quantifiable outcome

• Buildings cost at least 10% less to build than comparable conventional buildings
• +4 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• DESC (Downtown Emergency Service Center)coreStrategic or Co-development PartnerDESC is Seattle's leading homeless service organization and partner for the Permanent Supportive Housing project at Burbridge Place. SLI won this project through competitive bidding from the Seattle Office of Housing. DESC represents a key partnership for delivering affordable and supportive housing using SLI's V7 load-bearing panels.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Mighty Buildings: 3D-printed and panelized prefab housing manufacturer targeting single-family ADUs and multifamily projects. Comparable to SLI in factory-based sustainable construction with technology-driven differentiation, though focused on different building typologies.
• Boxabl: Factory-built housing manufacturer known for the Casita prefab unit, focused on affordable single-family housing using foldable panelized construction. Shares SLI's prefab + sustainability thesis but targets single-family rather than multifamily.
• Veev (formerly Dragonfly Living): Panelized and modular housing company for multifamily and single-family construction using light-gauge steel panels. Direct competitor in prefab building systems with focus on speed and sustainability similar to SLI.

Broad incumbents

• View (View Inc.): Smart building glass and building intelligence company providing data-driven building optimization for commercial real estate. Comparable to SLI's SLI Connect smart building platform through its data-driven building performance approach, but focused on glazing and analytics rather than prefab construction.
• Autodesk Construction Cloud: Established AEC software platform with BIM, project management, and construction operations tools. Comparable to SLI's software platforms (Digital Twin, Configurator, Track) that target building lifecycle data, but as a broad incumbent rather than prefab-specific.

Direct peers

• Plant Prefab: Prefab building manufacturer focused on single-family and multifamily custom and multifamily housing using panelized and modular construction. Similar factory-based, sustainable-design focus as SLI, serving developers with prefab building solutions. Acquired by Walmart-affiliated Radical Investments in 2024.
• Katerra: Was a leading prefab/panelized construction company for multifamily and commercial buildings with vertical integration from factory to on-site assembly. Direct competitor to SLI's panelized building systems approach. Filed for bankruptcy in 2021, illustrating both the opportunity and execution risk in this category.
• Factory OS: Modular multifamily housing manufacturer using factory-built modules for mid-rise and high-rise apartment buildings. Direct competitor focused on California multifamily market with similar sustainability and cost-reduction thesis as SLI.
• Prescient (Prescient Co.): Structural steel and panelized building systems company targeting multifamily, student housing, and hotel construction. Directly competes with SLI in the mid-rise multifamily prefab space using a comparable factory-produced panel approach.

Regional players

• Greystar Real Estate Partners: Largest multifamily rental housing operator and developer in the US with extensive development pipeline. Comparable to SLI as a customer base for multifamily prefab construction, with broad geographic reach that could provide scale channel for SLI's expansion.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds2 records

Investors3 records

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 Living Innovations