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Sammamish Town Center (not licensed)

Beaton Hill & Big Rock Park South Master Plan

oblique image of Big Rock Park South showing buildings with solar panels in the middle of large grassy fields surrounded by conifers

Parks and Recreation

Project Manager

Shelby Perrault
(425) 295 0589

Project Update

We are pleased to inform you that City Council approved the preferred master plan designs for both Big Rock Park South (BRP South) and Beaton Hill Park (BHP). Staff is now working to complete a non-project SEPA for each park property as part of the master plan process.

What is a Master Plan?

A master plan is a conceptual design that is used as a guiding document for implementing future improvements at a park. A master plan is a multi-step process that receives input and direction from the public, City Council, and Parks & Recreation Commission. During the early stages of this process, long-term goals and objectives will be established to guide the development of design alternatives.

Once design alternatives have been refined into a final conceptual design, the next step is to determine a phasing and implementation schedule. This will be based on recommended priorities from the public, City Council, and Parks & Recreation Commission.

It is important to note that a master plan is conceptual and continues to be refined during the design phase, which can take several years to implement.

Project Overview

Beaton Hill Park and Big Rock Park South are centrally located within the City’s core. The City acquired Beaton Hill Park in fall 2018. Since then, the only work done at this site has been the demolition of the family residence and accessory structures. 

Beaton Hill Park is located directly north of the three Big Rock Park properties (North, Central, and South) and is currently closed to the public. Big Rock Park South was transferred to the City in November 2021 and is the final property of a phased land donation agreement.

Prior to commencing extensive development or improvement on City parkland, a master plan is completed by following the City adopted master plan process. The intent in following this process is to look at the parkland in a comprehensive manner, utilizing a process that involves the entire community. These master plans support the goal of providing a cohesive group of parks within the City’s core. The consolidated master planning process will prepare plans that integrate with Big Rock Park North and Central towards that goal.

Project Budget

A total of $275,000 is allocated in the 2021-2022 Parks CIP budget for the Beaton Hill Park and Big Rock Park South Master Plan. This is inclusive of all planning and design costs.

Beaton Hill Park

Beaton Hill Park is located approximately half a mile west of Sammamish City Hall in the heart of the City and just south of the future Town Center. The park is comprised of two parcels that were purchased by the City in the fall of 2018. The purchases were part of an effort to preserve open space in a rapidly densely developing area in the City. The park is named for the family that owned the farmstead for over 80 years.

The vacant land totals 9.36 acres and has mature trees, rolling topography, open meadows, three wetlands, and a seasonal stream.

Approximately 4 acres of the site will be designated for permanent conservation. The City was awarded a King County Conservation Futures Grant as reimbursement.

Big Rock Park South

Big Rock Park South is the third and final property of a 51-acre phased land donation agreement located in the center of the City. The first two parcels, Big Rock Park North and Central, opened to the public in 2016 and 2021. The property was transferred to the City in November 2021.

Like the conditions placed on the previous two parcels, this park will facilitate a variety of low-impact active and passive activities that may include:

  • nature trails;
  • open spaces; and
  • passive sports meadows.

There are a few existing structures on this parcel. Restrictions were put in place to preclude the development of new structures exceeding 2,500 square feet. These building restrictions support the development of the park in a manner that preserves the site’s natural beauty.

The 15 acres that make up this property include:

  • dense forest cover;
  • meandering trails that navigate relatively unvarying topography;
  • sensitive areas;
  • open meadows;
  • a single-family home;
  • detached garages; and
  • a barn.

Components of a Master Plan

A 12-18 month effort is anticipated for the master plan process which will include public involvement. Participation is anticipated from the community at large, City staff, Parks & Recreation Commission, City Council, and community stakeholders. Consolidating the master plan processes allows a collective kick-off and public engagement effort to facilitate community introductions and discussions. A combined approach also supports a collective department and city review. That said, individual master plan reports will be prepared for each park.

The master plan process will consist of three phases as described below:

Phase 1 - Site Investigation and Analysis

Evaluate existing site conditions, identify sensitive areas, complete site studies, and develop an overall understanding of the site. During this initial phase, a community survey will be prepared to assist with the development of initial park concepts.

Phase 2 - Park Program

The first public meeting will be held to present site analysis and provide the community with an opportunity to share their hopes, dreams, and concerns for the park. Following the first public meeting, a community survey will be published. A preliminary park design program will be developed that details proposed uses, design character, and criteria based upon:

  • the results of site analysis;
  • community survey;
  • City staff input;
  • technical input; and
  • initial public input.

Phase 3 - Master Plan Development

The remaining public engagement will take place during the third phase of the master plan process. Two to three Master Plan alternatives will be prepared for each park, based on the approved design program. This will include:

  • a narrative that summarizes the existing conditions;
  • design alternatives;
  • cost implications; and
  • regulatory criteria and identifies issues that will require further study at the next stage of project development.

Based upon feedback from the community, Parks & Recreation Commission, and City Council, the alternatives will be revised into one preferred Master Plan alternative with a cost estimate. The final deliverable will be a Master Plan Report for each park including:

  • final project drawings and narrative;
  • project process;
  • project phasing scenarios; and
  • phase costs.

Project Timeline

Project Kick-off

Request for Proposals (RFP) Published July 28, 2021
Proposals Due August 17, 2021
Contract Award by City Council February 15, 2022

Site Investigation & Analysis

Meeting #1 - Hopes, Dreams, and Concerns

Parks & Recreation Commission April 6, 2022
City Council Regular Meeting April 19, 2022
Informational Booth: Earth Day Event, Lodge at Beaver Lake April 23, 2022 11:00AM - 2:00PM
Open House at Big Rock Park South April 23, 2022 3:00PM - 5:00PM
Virtual Public Workshop April 28, 2022 6:00PM - 8:00PM

Park Program

Meeting #2 - Design Alternatives

Public Workshop #2 July 27, 2022 4:00PM - 8:00PM
Informational Booth: Concert in the Park, Pine Lake Park  July 28, 2022 6:00PM - 8:00PM
Joint City Council/Parks & Recreation Commission  September 13, 2022

Master Plan Development

Meeting #3 - Preferred Master Plan

Informational Booth: Lunar New Year January 21, 2023
Public Workshop #3 January 26, 2023
Parks & Recreation Commission February 1, 2023
Open House at Big Rock Park South March 11, 2023
Joint City Council/Parks & Recreation Commission  March 14, 2023

Site Analysis



  • Presentation #1: Agenda Bill and Presentation to Parks & Recreation Commission, April 6, 2022
  • Presentation #1: Agenda Bill and Presentation to City Council, April 19, 2022

Public Workshop #1 - Hopes, Dreams & Concerns

Did you miss the virtual workshop on April 28th, 2022? No problem! The recorded meeting is available to watch below.

Concept Alternatives

Three park design layouts, also called concept alternatives, have been developed for each park and are available to view below. The City published a community survey to receive input on these concepts from July 27, 2022 - August 29, 2022.



  • Presentation #2: Agenda Bill to Parks & Recreation Commission, July 20, 2022
  • Presentation #2: Agenda Bill and Presentation to Parks & Recreation Commission and City Council, September 13, 2022

July 20, 2022 Parks and Recreation Commission Meeting: Concept Alternatives

Staff presented results of the community outreach, vision statements for the new parks, and preliminary park design layouts at the July 20 Parks and Recreation Commission meeting. The recorded meeting is available to watch below. 

Preferred Plan



Public Workshop #3 - Preferred Plan

Did you miss the virtual workshop on January 26 2023? No problem! The recorded meeting is available to watch below.

Site Background

Site map showing where Beaton Hill Park and Big Rock Park South are and their proximity to each other as well as to Big Rock Park North, Big Rock Park Central, and Sammamish Commons.

Big Rock Park South - Property Videos

If you were unable to visit Big Rock Park South at the open house in April 2022, please watch the videos below. They provide a brief overview of the property and may be helpful in providing feedback. 




oblique image of Big Rock Park South showing grassy field surrounded by forest and street with trees and parking
an open stand of douglas firs in a grassy area beside a dirt path
tree with yellow autumn foliage beside shingled small building behind hedges