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City Hall to function as warming center

City Hall and other public facilities are closed for typical business Nov. 20 AND Nov. 21, as crews clear away debris from last night's storm.  We encourage everyone to stay at home, shelter in place, until the roads are safe. If you need a place to warm up, City Hall will function as a warming center until 5 p.m. on both days.

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Sammamish Town Center (not licensed)

Tree Management

When are permits required to remove a tree?

A Tree Removal Permit is required to remove significant trees within the City. See below for guidance about what makes a tree significant.

A Type B Right-of-Way (ROW) permit is required to remove and replace a tree that is located within the street ROW.

Tree Removal Permit Applications

A Tree Removal or a Type B ROW Permit Application Form must be submitted online at www.mybuildingpermit.com. 

On sites where development is proposed or anticipated, removal of any trees shall not take place until a permit for construction has been issued. Please see SMC 21.03.070.I.2.b for details. 

TREE REMOVAL APPLICATION
for removal of significant trees		   TYPE B ROW APPLICATION
for trees in the street ROW

Sample site plans for tree removal

What to expect after you submit an application

  • Your application will be screened for acceptance within two business days.
  • If accepted, the application will be reviewed within five business days.
  • If not accepted, you will receive an email explaining why it was not accepted.
  • Once the review is completed, the permit or approval letter will be uploaded to www.mybuildingpermit.com.

Allowable Tree Removal

Sammamish Municipal Code 21.03.060 provides the following removal standards for significant trees. 

Lot Size

Percent Over
10 Years* 

 Annual Number*

Cumulative Number Over
10 Years*

Less than 1/4 acre

50%

2

6

1/4 - 1/2 acre

40%

4

12

1/2 - 1 acre

30%

6

18

1-2 acres

20%

8

24

More than 2 acres

10%

10

30

* The number of significant trees allowed for removal is limited to whichever of these columns is lowest

What is a significant tree?

How to meaure a tree to determine if it is significant

Significant trees require a tree removal permit to remove:

  • a Significant Deciduous Tree is 12" diameter (DBH) or larger
  • a Significant Coniferous Tree is 8" diameter (DBH) or larger

Please refer to our tree calculation guide for assistance determining diameter (DBH).

Informational Resources