110 Fences and Retaining Walls
These regulations shall apply to fences and retaining walls for both residential and nonresidential uses. This chapter shall be administered by the Planning Director, with determinations from the City Engineer for issues such as proposals located in the public right-of-way, sight obstructions, and drainage. (Ord. 2516, 2025)
Installation of fences and freestanding walls, except for public utility purposes, shall comply with the following general requirements:
A. All fences and freestanding walls shall meet the requirements for height, setback, sight obstruction, maintenance, and special location provisions as set forth in this chapter.
B. The design of all fences and freestanding walls shall be consistent with the adopted design standards that are applicable to the site.
C. A building permit shall be required prior to installation of a fence or freestanding wall, except for when the fence or freestanding wall is located in the Single-Family Residential Zone outside of the Historic District.
D. The type, size, location, and height of fencing proposed for tennis courts, parks, or athletic fields shall be categorically exempt from the requirements outlined in this chapter and will be reviewed and approved by the Planning and Development Services Department on a project-by-project basis.
E. No fence or freestanding wall shall create a safety hazard or sight obstruction as described in SMC 14.210.150.
F. Electrical fences and fences with barbed wire, razor wire, concertina wire, or similar products are prohibited in all residential public land use designations as shown on the Future Land Use Map.
G. Fence and Freestanding Wall Height.
1. Fence/freestanding wall height shall be measured from the ground level where it touches the ground to the highest point of the fence/freestanding wall.
2. If it does not touch the ground, the ground level shall be determined by where it would touch if extended straight down to the ground.
3. If the ground level is different on either side of a fence/freestanding wall, the height shall be measured from the lowest ground level elevation.
4. The maximum allowed height of fences and freestanding walls located in the buildable area of the lot shall be the same as the maximum height allowed for the zone where it is located.
5. Decorative features, artwork, or trellises placed on top of a fence or freestanding wall that do not add to the screening effect or opaqueness of the fence/freestanding wall shall not be included when calculating the height. (Ord. 2516, 2025)
Fences shall not be allowed in the public right-of-way except under the following conditions:
A. The proposed fence is on a lot with a residential use on the ground floor.
B. The right-of-way is equal to or in excess of 60 feet.
C. There will be no obstruction to the operation of utility equipment and the maintenance of utility lines.
D. The fence is located on the nonstreet side of the sidewalk, or otherwise in the opinion of the Director does not impede the normal flow of the public’s use of the right-of-way.
E. The property owner-applicant proposing the fence executes and records an agreement, approved by the City Engineer or designee, to maintain the fence at the said owner-applicant’s expense and remove the fence at the said owner-applicant’s expense if required by the City, or a public utility, for any reason in order to work in the right-of-way.
F. The owner-applicant proposing the fence shall also comply with all requirements of Chapter 12.12 SMC, Right-of-Way Use Permit. (Ord. 2516, 2025)
All electrical fences shall be designed to meet the following conditions:
A. Be located at least two feet from the property line and shall not be located in the right-of-way.
B. Use an interrupted flow of current at intervals of one second on and two seconds off.
C. Be limited to 2,000 volts at 17 mill amperes current.
D. Require a “U.L. Approved” seal.
E. Be posted with permanent signs with a minimum area of 36 square inches at intervals of not more than 50 feet stating that the fence is electrified.
F. Electrical fences are prohibited in all residential and public land use designations as shown on the Future Land Use Map. (Ord. 2516, 2025)
Fences and freestanding walls shall comply with the following requirements:
A. Residential Designations – SFR, LDR, MDR, HDR.
1. Within the Front Setback Area.
a. Solid Fence. No higher than three feet unless it connects side fences to the structure.
b. Open Fence. Up to five feet if it does not create a sight obstruction.
2. Within the Side or Rear Setback Areas. If located within a rear or side yard setback area the maximum allowed height shall be six feet except fences located in a side yard setback area on the street side of a corner lot shall also be required to meet the sight clearance requirements for intersections as set forth in SMC 14.210.150.
B. Commercial and Industrial Designations – C, MID, HBD, BP, PIL, I, AI Zones. The maximum allowed height of fences and decorative freestanding walls constructed in commercial and industrial zones shall be eight feet and shall comply with the adopted design standards applicable to where the fence/freestanding wall is located.
C. Public Designation – Parks, Open Space, and Public Zone. There are no specific dimensional standards in the POP Zone. Fences and freestanding walls in the POP Zone shall be reviewed on a case-by-case basis based on potential impacts and park needs. (Ord. 2516, 2025)
Fences, retaining walls and rockeries, and decorative freestanding walls constructed in the Historic District or Pilchuck District shall comply with the adopted design standards applicable to the district, in addition to the other standards of this chapter, as applicable. (Ord. 2516, 2025)
A. Retaining wall and rockery installations in all zones shall be consistent with the adopted design standards and development regulations which are applicable to the area where the retaining wall is located.
There shall not be a maximum height limit on retaining walls and rockeries. However, the height of retaining walls and rockeries shall be the lowest necessary to achieve its intended functional purpose. If the proposed wall or rockery height exceeds the maximum building height limitation for the zone area where it is located, it must be reviewed and approved by the Planning Director or designee on a project-by-project basis.
B. Except as otherwise provided below, retaining wall permits shall be required for all retaining walls. The permit application shall include a site plan, drawn to scale, which shows:
1. The entire project site and all property lines; and
2. Areas within 50 feet of the proposed retaining wall/rockery even if that includes adjacent properties; and
3. All structures, including existing retaining walls and rockeries, within 50 feet of the proposed wall/rockery; and
4. Existing topographic contours of the subject property at two-foot vertical intervals. Topographical data obtained from public records is acceptable; and
5. The materials proposed for use in construction; and
6. The location of the proposed wall/rockery with all dimensions necessary to describe its location, depth, and height; and
7. A cross section showing the wall/rockery and provisions for drainage.
C. If the Planning Director or designee determines it is necessary, structural calculations and/or a geotechnical report prepared by a licensed professional engineer legally entitled to practice in the State of Washington shall be submitted with the application.
D. A Type 1 retaining wall permit shall be required for retaining walls/rockeries four feet or less in height.
1. Only retaining walls/rockeries that do not require structural calculation and/or a drainage system are eligible for a Type 1 permit.
2. If a series of retaining walls/rockeries four feet or less in height where the slope measured from the bottom of the lowest retaining wall/rockery to the top of the highest retaining wall/rockery is greater than 1.5 feet horizontal to 1.0 feet vertical, then a Type 2 retaining wall permit shall be required.
E. A Type 2 retaining wall permit shall be required for all retaining walls/rockeries greater than four feet in height.
1. Type 2 retaining wall permits shall require the submittal of a:
a. Geotechnical report; and
b. Structural calculations; and
c. Drainage system behind wall.
2. The Planning Director or designee may require additional submittals for Type 2 retaining wall permits.
F. Private retaining walls/rockeries shall not be located in City rights-of-way except as may be otherwise provided in the Snohomish Municipal Code.
G. The height of a retaining wall/rockery shall be measured from the lowest part of the wall/rockery or wall/rockery footing to the highest part of the wall/rockery at every location along the wall/rockery.
H. No part of a retaining wall/rockery may extend into an adjacent lot.
I. Guardrails required to be placed at the top of retaining walls/rockeries, pursuant to the City-adopted building codes, shall be permitted as part of the wall/rockery, and shall not be considered to be a fence or part of the wall/rockery height.
J. A retaining wall/rockery may terminate at a property line; provided, that it must abut a retaining wall/rockery on the adjacent property and is structurally independent from such wall. (Ord. 2516, 2025)
A. Permits shall not be required for fences or freestanding walls/rockeries two feet or less in height.
B. The City may waive the requirement for a retaining wall permit when:
1. Every part of the wall/rockery is set back at least five feet from all property lines; and
2. The wall/rockery is no greater than four feet in height; and
3. The wall/rockery is not load bearing; and
4. The wall/rockery does not affect the structural integrity of adjacent structures; and
5. Such waiver is made in writing by the Planning Director or designee.
C. Permits shall not be required for retaining walls/rockeries within new plats or developments that are reviewed and approved by the City as part of the improvements associated with an issued site civil permit. (Ord. 2516, 2025)
All requests for variances from the requirements of this chapter shall be processed as a minor variance as provided for in SMC 14.70.020. (Ord. 2516, 2025)
110 Fences and Retaining Walls
These regulations shall apply to fences and retaining walls for both residential and nonresidential uses. This chapter shall be administered by the Planning Director, with determinations from the City Engineer for issues such as proposals located in the public right-of-way, sight obstructions, and drainage. (Ord. 2516, 2025)
Installation of fences and freestanding walls, except for public utility purposes, shall comply with the following general requirements:
A. All fences and freestanding walls shall meet the requirements for height, setback, sight obstruction, maintenance, and special location provisions as set forth in this chapter.
B. The design of all fences and freestanding walls shall be consistent with the adopted design standards that are applicable to the site.
C. A building permit shall be required prior to installation of a fence or freestanding wall, except for when the fence or freestanding wall is located in the Single-Family Residential Zone outside of the Historic District.
D. The type, size, location, and height of fencing proposed for tennis courts, parks, or athletic fields shall be categorically exempt from the requirements outlined in this chapter and will be reviewed and approved by the Planning and Development Services Department on a project-by-project basis.
E. No fence or freestanding wall shall create a safety hazard or sight obstruction as described in SMC 14.210.150.
F. Electrical fences and fences with barbed wire, razor wire, concertina wire, or similar products are prohibited in all residential public land use designations as shown on the Future Land Use Map.
G. Fence and Freestanding Wall Height.
1. Fence/freestanding wall height shall be measured from the ground level where it touches the ground to the highest point of the fence/freestanding wall.
2. If it does not touch the ground, the ground level shall be determined by where it would touch if extended straight down to the ground.
3. If the ground level is different on either side of a fence/freestanding wall, the height shall be measured from the lowest ground level elevation.
4. The maximum allowed height of fences and freestanding walls located in the buildable area of the lot shall be the same as the maximum height allowed for the zone where it is located.
5. Decorative features, artwork, or trellises placed on top of a fence or freestanding wall that do not add to the screening effect or opaqueness of the fence/freestanding wall shall not be included when calculating the height. (Ord. 2516, 2025)
Fences shall not be allowed in the public right-of-way except under the following conditions:
A. The proposed fence is on a lot with a residential use on the ground floor.
B. The right-of-way is equal to or in excess of 60 feet.
C. There will be no obstruction to the operation of utility equipment and the maintenance of utility lines.
D. The fence is located on the nonstreet side of the sidewalk, or otherwise in the opinion of the Director does not impede the normal flow of the public’s use of the right-of-way.
E. The property owner-applicant proposing the fence executes and records an agreement, approved by the City Engineer or designee, to maintain the fence at the said owner-applicant’s expense and remove the fence at the said owner-applicant’s expense if required by the City, or a public utility, for any reason in order to work in the right-of-way.
F. The owner-applicant proposing the fence shall also comply with all requirements of Chapter 12.12 SMC, Right-of-Way Use Permit. (Ord. 2516, 2025)
All electrical fences shall be designed to meet the following conditions:
A. Be located at least two feet from the property line and shall not be located in the right-of-way.
B. Use an interrupted flow of current at intervals of one second on and two seconds off.
C. Be limited to 2,000 volts at 17 mill amperes current.
D. Require a “U.L. Approved” seal.
E. Be posted with permanent signs with a minimum area of 36 square inches at intervals of not more than 50 feet stating that the fence is electrified.
F. Electrical fences are prohibited in all residential and public land use designations as shown on the Future Land Use Map. (Ord. 2516, 2025)
Fences and freestanding walls shall comply with the following requirements:
A. Residential Designations – SFR, LDR, MDR, HDR.
1. Within the Front Setback Area.
a. Solid Fence. No higher than three feet unless it connects side fences to the structure.
b. Open Fence. Up to five feet if it does not create a sight obstruction.
2. Within the Side or Rear Setback Areas. If located within a rear or side yard setback area the maximum allowed height shall be six feet except fences located in a side yard setback area on the street side of a corner lot shall also be required to meet the sight clearance requirements for intersections as set forth in SMC 14.210.150.
B. Commercial and Industrial Designations – C, MID, HBD, BP, PIL, I, AI Zones. The maximum allowed height of fences and decorative freestanding walls constructed in commercial and industrial zones shall be eight feet and shall comply with the adopted design standards applicable to where the fence/freestanding wall is located.
C. Public Designation – Parks, Open Space, and Public Zone. There are no specific dimensional standards in the POP Zone. Fences and freestanding walls in the POP Zone shall be reviewed on a case-by-case basis based on potential impacts and park needs. (Ord. 2516, 2025)
Fences, retaining walls and rockeries, and decorative freestanding walls constructed in the Historic District or Pilchuck District shall comply with the adopted design standards applicable to the district, in addition to the other standards of this chapter, as applicable. (Ord. 2516, 2025)
A. Retaining wall and rockery installations in all zones shall be consistent with the adopted design standards and development regulations which are applicable to the area where the retaining wall is located.
There shall not be a maximum height limit on retaining walls and rockeries. However, the height of retaining walls and rockeries shall be the lowest necessary to achieve its intended functional purpose. If the proposed wall or rockery height exceeds the maximum building height limitation for the zone area where it is located, it must be reviewed and approved by the Planning Director or designee on a project-by-project basis.
B. Except as otherwise provided below, retaining wall permits shall be required for all retaining walls. The permit application shall include a site plan, drawn to scale, which shows:
1. The entire project site and all property lines; and
2. Areas within 50 feet of the proposed retaining wall/rockery even if that includes adjacent properties; and
3. All structures, including existing retaining walls and rockeries, within 50 feet of the proposed wall/rockery; and
4. Existing topographic contours of the subject property at two-foot vertical intervals. Topographical data obtained from public records is acceptable; and
5. The materials proposed for use in construction; and
6. The location of the proposed wall/rockery with all dimensions necessary to describe its location, depth, and height; and
7. A cross section showing the wall/rockery and provisions for drainage.
C. If the Planning Director or designee determines it is necessary, structural calculations and/or a geotechnical report prepared by a licensed professional engineer legally entitled to practice in the State of Washington shall be submitted with the application.
D. A Type 1 retaining wall permit shall be required for retaining walls/rockeries four feet or less in height.
1. Only retaining walls/rockeries that do not require structural calculation and/or a drainage system are eligible for a Type 1 permit.
2. If a series of retaining walls/rockeries four feet or less in height where the slope measured from the bottom of the lowest retaining wall/rockery to the top of the highest retaining wall/rockery is greater than 1.5 feet horizontal to 1.0 feet vertical, then a Type 2 retaining wall permit shall be required.
E. A Type 2 retaining wall permit shall be required for all retaining walls/rockeries greater than four feet in height.
1. Type 2 retaining wall permits shall require the submittal of a:
a. Geotechnical report; and
b. Structural calculations; and
c. Drainage system behind wall.
2. The Planning Director or designee may require additional submittals for Type 2 retaining wall permits.
F. Private retaining walls/rockeries shall not be located in City rights-of-way except as may be otherwise provided in the Snohomish Municipal Code.
G. The height of a retaining wall/rockery shall be measured from the lowest part of the wall/rockery or wall/rockery footing to the highest part of the wall/rockery at every location along the wall/rockery.
H. No part of a retaining wall/rockery may extend into an adjacent lot.
I. Guardrails required to be placed at the top of retaining walls/rockeries, pursuant to the City-adopted building codes, shall be permitted as part of the wall/rockery, and shall not be considered to be a fence or part of the wall/rockery height.
J. A retaining wall/rockery may terminate at a property line; provided, that it must abut a retaining wall/rockery on the adjacent property and is structurally independent from such wall. (Ord. 2516, 2025)
A. Permits shall not be required for fences or freestanding walls/rockeries two feet or less in height.
B. The City may waive the requirement for a retaining wall permit when:
1. Every part of the wall/rockery is set back at least five feet from all property lines; and
2. The wall/rockery is no greater than four feet in height; and
3. The wall/rockery is not load bearing; and
4. The wall/rockery does not affect the structural integrity of adjacent structures; and
5. Such waiver is made in writing by the Planning Director or designee.
C. Permits shall not be required for retaining walls/rockeries within new plats or developments that are reviewed and approved by the City as part of the improvements associated with an issued site civil permit. (Ord. 2516, 2025)
All requests for variances from the requirements of this chapter shall be processed as a minor variance as provided for in SMC 14.70.020. (Ord. 2516, 2025)