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Mercer Island, WA 98040
Phone: 206.275.7605
Email: epermittech@mercer. . .
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City of Mercer Island / Community Planning & Development / Land Use / Planning / Administrative Interpretations

Administrative Interpretations

Community Planning & Development Administrators are sometimes required to interpret the City's development codes in order to provide further clarification. Please see the following Administrative Interpretations for further information.

Number	Subject	Date Issued
18-02	Repairs of Non-Conforming Moorage Facilities	11/05/2018
18-01	Home Businesses in the Town Center	03/12/2018
16-01	Building Pads	07/05/2016
12-04	Existing Grade for Calculation of Basement Area Exclusion	01/09/2013
12-02	Use of Property for Boarding Horses	08/21/2012
11-01	Electric Vehicle Charging Stations	02/15/2011
08-02	Private Gymnasium in a Single Family Zone	09/15/2008
08-01	Impervious Surface Calculations for the PEAK Project	02/01/2008
07-07	Off-Street Parking Requirements in MF Zone	12/27/2007
07-06	Future WCF Collocation Requirements	11/14/2007
07-02	40 Percent Exterior Wall Modification Limitation	04/02/2007
07-01	Including attached garages in Basement Area Exclusion	02/01/2007
06-13	Legally Separate Lots, Transfer of Property to City for Parks & Rec	12/19/2006
06-11	10' Building Setback from Vehicluar Access Easement	11/02/2006
06-10	Gross Floor Area Calculations Margin of Error	10/25/2006
06-09	Private Access Roads - Sunset Ridge Plat	10/03/2006
06-03	On-Land Airplane Storage in Residential Zones	04/18/2006
06-02	Fund Raisers Allowed for Non-Residential Uses in Residential Zones	04/17/2006
05-03	Dog Grooming as Permitted Use in MF-2	06/24/2005
04-04	Average Building Elevation Prior to Any Development	08/09/2004
04-02	Temporary Use Permits in Town Center	06/28/2004
04-01	Legally Nonconforming Policy Interpretation	04/02/2004
03-01	Determination of Lot Area for Waterfront Lots	02/21/2003
01-09	Allowable Use of Existing Approved Parking for Metro in Res. Zone	03/28/2001
01-07	Interp. Radio Antennas different than WCF's and Dish Ant.	02/01/2001
00-06	Building Occupancy Prior to Permit Final	12/04/2000
00-05	Interpretation of Ancillary Uses Allowed by Right or Cond. Use	12/04/2000
00-02	Short Plat Vacations	05/15/2000
00-01	ADU Policy Statement & Policy Interpretation	04/10/2000
99-01	Minimum Lot Size for Buildable Lots	04/13/1999

With the recent adoption of new residential development standards (Ordinance No. 17C-15), the Development Services Director reviewed all current administrative code interpretations for their continued applicability.
The following interpretations are repealed based on the reasoning included in each document below.

Number	Subject	Date Repealed
00-03	REPEALED-Removal of Existing Non-Conforming Accessory Structures	01/08/2018
00-04	REPEALED-Number of Stories & Height of Structures in Town Center	01/08/2018
01-08	REPEALED-Admin. Design Review of Minor Signs Modifications	01/08/2018
02-10	REPEALED-Nonconforming Structures	01/08/2018
03-02	REPEALED-Town Center - Outdoor Retail Uses Not Permitted	01/08/2018
04-03	REPEALED-Subdivision Building Pad and Lot Dimension Requirements	01/08/2018
05-01	REPEALED-Roof Height in Residential - Downhill Side Measurement	01/08/2018
05-02	REPEALED-Loss of Legally Nonconforming Status for Docks	01/08/2018
06-01	REPEALED-WCF's Allowed in B Zone Following Standards for PBZ Zone	01/08/2018
06-04	REPEALED-Appurtenances Allowed in SF Zones also permitted in MF Zones	01/08/2018
06-05	REPEALED-Building Setbacks for Irregularly Shaped Lots	01/08/2018
06-06	REPEALED-Gross Floor Area Exemptions Other Than Basements	11/25/2013
06-07	REPEALED-Authority to Grant Final Short Plat Approval	01/08/2018
06-08	REPEALED-Impervious Surface Calculations Margin of Error	01/08/2018
06-12	REPEALED-Impervious Surface Deviation Criteria for Approval	01/08/2018
07-03	REPEALED-Determining Whether a Lot Complies with the Lot Area	01/08/2018
07-04	REPEALED-Buffer Requirements for Piped Watercourses	01/08/2018
07-05	REPEALED-Impervious Surface Calculations for Single Family Lots	01/08/2018
08-03	REPEALED- Roof Eave Overhangs and Gutters Over Existing Impervious Surfaces	01/08/2018
12-01	REPEALED-Interpretation of the Standards for Stormwater Detention	01/08/2018
12-03	REPEALED- Calculation of Lot Coverage on a Single Family Lot with a Vehicular Access Easement	01/08/2018
13-01	REPEALED-Gross floor area exemptions, other than basements	01/08/2018
14-01	REPEALED-Shoreline Conditional Use Permits	01/08/2018
14-02	REPEALED-Impervious Surface Deviation Review Criteria	01/08/2018
17-01	REPEALED-Allowed Uses in I-90 Right of Way	12/07/2017