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Sammamish Town Center (not licensed)

Carrier Subdivision

Community Development

Current Planning & Permit Center Manager

Avril Baty

Site information

The Carrier Subdivision (see vicinity map below for reference), started construction in September 2019. The project site is more than 14 acres in size, of which about 8.7 acres is preserved as critical area (wetland, streams, and habitat), tree retention, recreation, and open space.

aerial photo with an overlay showing a rectangular site on an area that is part grass and part forest, adjacent to other subdivisions


Stormwater and erosion control

On December 20 and 21, 2019, the City of Sammamish experienced a record rain event. According to the National Weather Service, December 20 was the rainiest day of the previous decade. Due to the rainfall, City staff performed inspections of erosion control measures at the Carrier Subdivision site on a daily basis.

A majority of the water flowing through the middle of the site was from the high-flow bypass on the pond immediately up-stream (to the north), and not from the Carrier site itself. Once the high-flow bypass was engaged and a much higher than normal volume of water was sent through the middle of the Carrier site.

The erosion control measures at the project site have been capturing silt, resulting in relatively clear water running off the property. Below are photos of the site provided to the City, taken on December 21. 

Dec 2019 Rain Event -- shows sediment captured by the silt fence enclosing the construction site, with relatively clear water running off-site
Dec 2019 Rain Event -- shows sediment captured by the silt fence around the construction site, a segment of damaged silt fence to be repaired, and relatively clear run-off


January 29, 2016 – Preliminary Subdivision application submitted.

February 2, 2016 – Preliminary Subdivision application vested.

July 30, 2018 – Preliminary subdivision approved for 35 lots (see site plan below).

August 15, 2019 – Site Development Permit issued; this permit requires certain trees to be retained, allows certain trees to be removed, and allows part of the site to be graded.

September 2019 – Construction began.

September 16, 2019 – Erosion control measures (such as a silt fence and rock-bed construction entrance for heavy machinery) installed.

October to November 2019 – Stormwater vault construction to begin.

October 2019 to January 2020 – Right-Of-Way (ROW) improvements along SE 8th Street to begin.

December 2019 to March 2020 – ROW improvements along 214th Avenue NE to begin.

Site Plan for carrier subdivision, indicating development of 34 plots along the left and right sides of the site, with the center preserved as tree preservation, mitigation planting area, and wetland


Community Development: Avril Baty, Current Planning & Permit Center Manager –

Please contact Avril if you have questions about the critical areas, trees, and mitigation measures. Avril also accepts requests for additional information to be posted to the website. 

Public Works: Tom Tubbs, Construction Inspector –

Please contact Tom if you have questions about the project's grading, erosion control measures, and right-of-way improvements. Additionally, Tom is the contact if there is run-off from the site that contains silt and/or dirt. 

Developer: Jeff Peterson, Toll Brothers –

Please contact Jeff Peterson if you have questions about the construction timeline. 

Relevant documents