Project Introduction

Project Name: Linden Flats

Location: Seattle, Washington

Installed: 2018


Located in North Seattle, Linden Flats is a six-story affordable housing complex comprised of 170 apartments and several large community spaces. Featuring a Solar Thermal System comprised of 70 EP-40 Flat Plate Collectors manufactured by SunEarth of Fontana, California. The Empire Series of Flat Plate Collectors sets the industry standard for quality, performance, durability, and value, and will help to offset utility costs at Linden Flats.

Linden Flats at Bitter Lake, 13280 Linden Ave N (GMD Development, $34 million tax-exempt bonds, $17.9 million estimated tax-credit equity).

100 Percent Affordable

Linden Flats is “100 percent affordable,” said GMD’s Rebecca Ralston. Rents are at or below 60 percent of area median income. The project team plans to use the city’s multifamily tax exemption (MFTE) program and low-income bonds from the Washington State Housing Finance Commission.


Units are a mix of sizes, with 18 percent having three bedrooms. “We’re not doing micro-units,” she added.

GMD specializes in affordable housing, but Ralston said this project is “a little different in that we’ve designed it to look like market-rate.”

Project Summary:

Location: 13280 Linden Ave N, Seattle, WA 98133
ApplicationSolar water heating for affordable housing complex

System Format: Solar pre-heated water for tenant’s water heaters 

Solar Collectors: 70 SunEarth EP-40 Collectors
Rated Power Output: 2863ft2 / 10.76 * 0.7 = 186.25 kwh

Yearly Energy Output (kWh): 186.25*3.36*.44*365 = 100,503.48 kwh 

Contact Information: 

SunEarth www.sunearthinc.com

Northwest Mechanical https://www.nwmechanical.com/


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