Exemplary Buildings Program
The Exemplary Buildings Program is a regional collaborative effort targeting nothing less than transformation of the affordable housing market.
We believe it’s possible to create equitable access to healthy, safe housing that is both affordable and ultra-efficient. Through the use of performance standards and building practices that reduce the additional costs of implementing ultra-efficiency, we can bring buildings to the point where the premium can be financed through the operational savings generated by ultra-efficiency.
What are Exemplary Buildings?
Exemplary Buildings are Ultra-Efficient Affordable Housing that: maximizes housing units produced, offers long-term life-cycle cost benefits, an improved quality of life for residents, and significantly reduce energy and water consumption— first  through state-of-the-art building design strategies and efficiency measures, and then through on-site renewable energy generation.
Our guiding principles
We have a multi-pronged goal: creating healthy homes; preserving the environment; producing extremely durable buildings; and balancing first costs in a way that does not minimize overall units produced.
As a result, we seek to:
- Define standardized building practices and specifications that support early integrative design and create consistency. This will transcend the challenges that arise when each nonprofit-developed affordable housing project is a one-off design-build, each typically completed by a newly assembled development team.
- Garner opportunities for volume purchasing and discounted supplier agreements for essential building materials. This will help reduce the incremental premium and overall costs of producing ultra-efficient and healthy affordable housing at scale.
- Develop and deliver professional training and certification programs and expand a diverse contractor and workforce capable of erecting, installing, and operating ultra-efficient housing.
- Marshal funding from sources that typically don’t support affordable housing. This will offset premium costs that remain after implementing the previous three steps and mitigate concerns by developers regarding how to make the project viable.
- Provide stellar tools and methods to help affordable housing owner-operators modify end-user resident behavior and manage utility allowance approaches. This will leverage the value created by producing ultra-efficient buildings.
- Focus on widespread adoption and persistent improvement by conducting all work in the early demonstration phases with an open source intentionality and deliberate monitoring and evaluation that feeds learning back into future projects.
Demonstration Projects
Several of our area’s affordable housing developers share the vision of HDC’s Exemplary Buildings Program and have committed to using one of their upcoming developments as a test of the model.
Hobson Place South
Owner/Developer:Â DESC
Building type:Â Mixed-use residential + commercial (permanent supportive housing with integrated physical and behavioral health clinic)
Residents:Â Adults with disabilities who have experienced homelessness
Units:Â 92 studio apartments
Construction start date:Â May 2020
Targeted completion date:Â Completed January 2022
Passive House: Â Pre-certification achieved June 2021
Energy Data: O’Brien360’s 2021 energy study on Hobson Place S. (prepared for Seattle City Light) available here
Architect:Â Runberg Architecture Group
General Contractor:Â Walsh Construction Co.
Development Consultants:Â Lotus Development Partners
MEP Consulting Engineer:Â Rushing Company
Othello Square (Building D)
Owner/Developer:Â HomeSight
Building type:Â Mixed-use commercial + family-affordable co-op units
Residents:Â 100 percent of units reserved for households with annual incomes at or below 80 percent of area median income at time of purchase
Units:Â 68 family co-op units
Construction Start Date:Â early 2023 (estimated)
Completion Date:Â 2024
Architect:Â SKL Architects
General Contractor:Â Marpac Construction LLC
Development Consultants:Â Barrientos Ryan
Landscape Architect:Â Weber Thompson
Energy Data: Ecotope’s 2020 energy study on Othello Square (prepared for Seattle City Light) available here
North Lot (Phase 1)
Owner/Developer:Â SCIDpda
Building type:Â Residential, mixed-use (+ 25,000 SF Elderly Care Facility, 10,000 SF Childcare Facility)
Residents:Â Affordable family (2 and 4 bedroom) + senior housing with integrated facilities for elderly care
Units:Â Approximately 160
In service:Â Spring 2024 (estimated)
Architect:Â Weber Thompson
Development Consultant:Â Edge Developers LLC
Energy Data: Rushing’s energy study on North Lot (prepared for Seattle City Light) available here.
Sawara (Yesler Terrace Project 7.3)
Owner/Developer:Â Seattle Housing Authority
Building Type:Â Residential
Units:Â 110 affordable homes
In Service:Â February 2024 (estimated)
Architect:Â Ankrom Moisan Architecture
Energy Data: Ecotope’s 2021 energy study on Sawara (prepared for Seattle City Light) available here
Samma
Owner/Developer:Â Imagine Housing
Building type:Â Residential
Residents:Â Seniors
Units:Â 76 studio apartments
In service:Â 2023
Architect:Â third place design co-operative
Design Guidelines
- Balanced Ventilation with Heat Recovery (Guidelines document v.1.1)
- Early Integrative Design (Guidelines document v.1.0).
- Solar Integration (Guidelines document v.1.0.3) and blank solar proforma template (please refer to the guidelines doc for step-by-step instructions on completing the template for your project)
- Wall Assemblies (Guidelines document v.1.1)
- Domestic Hot Water & Water Management (Guidelines document v.1.0) Charrette slides also available
- Healthy Materials (Recommendations matrix v.1.0, developed by: Toxic Free Future, SKL Architects, Healthy Building Network, and ILFI)
Tools
EBP Project Specifications
- Exemplary Buildings Specs 2.0 – This document compiles the recommendations included in the various HDC Exemplary Building Guideline documents listed above. It is intended as a template for design teams to edit and incorporate as they see fit into their own project-specific basis of design or specifications documents.
- Spec Sheet for our Phase I demonstration projects
EBP Technical Briefs
Case Studies
Energy Studies and Case Studies from EBP Demonstration Projects (new construction)
- Hobson Place South
- North Lot
- Othello Square
- Sawara
Case Studies from Other Local Multifamily Affordable Housing (retrofits & new construction)
Workshops & Presentations
EBP Promising Practices Workshops
- Promising Practices in Balanced Ventilation with Heat Recovery (YouTube video of virtual workshop held on Dec. 3, 2020).
- Promising Practices in Early Integrative Design (YouTube video of virtual workshop held on Nov. 19, 2020)
- Promising Practices in Domestic Hot Water & Water Management (YouTube video of virtual workshop held on Nov. 12, 2020)
- Promising Practices in Solar Integration (YouTube video of virtual workshop held on Nov. 5, 2020)
- Promising Practices in Wall Assemblies(YouTube video of virtual workshop held on Oct. 15, 2020)
EBP-Related Presentations
- State Energy Code Changes – 2021 WSEC (Slide deck from HDC’s 2022 Policy Summit)
- 2018/2021 Commercial Energy Code Impacts: Multifamily Building Development (Slide deck from NAIOPWA Sustainable Development Committee Energy Code Panel, June 2, 2022)
- Passive House Accelerator: Live Project Showcase (presentation on Hobson Place: PH Supportive Housing, March 16, 2022)
- Perspectives and Lessons Learned from the HDC Exemplary Buildings Program (Slide deck from Housing Washington Conference presentation, October 5, 2021)
- Guidelines on Air Tightness and Balanced Ventilation (Slide deck from EBP presentation to Seattle Building Enclosure Council November 19, 2020)







