Skip to main content
Loading…
This section is included in your selections.

A. Purpose. The RA-5 Semirural Residential zone maintains low, semirural residential densities within the Urban Growth Area on lands not suited to intense urban uses and not already characterized by urban development. Densities in this zone cannot exceed one unit per five acres, exclusive of density bonuses. The Semirural Residential zone may be used to maintain the semirural character of lands with significant amounts of critical areas that make the land unsuited to urban development, that are characterized by urban development, and that are not appropriate for long-term agriculture or forestry use. Land uses other than residential that may be appropriate and are allowed in the Semirural Residential zone would include uses that do not impact the primarily residential character and uses of the zone.

B. Maximum Development Yield. The following calculation provides a potential maximum development yield for a development utilizing the density bonuses available for the RA-5 zone. The calculation is based on a development occurring on a one-acre lot. Please note that accessory dwelling units do not count toward maximum development yield.

Table 21.08.020A
Maximum Development Yield

Base Density

Available Density Bonuses

Maximum Density

1 dwelling unit per five gross acres

Green Building/Green Infrastructure Development: Up to 10 percent of base density

0.10 dwelling units allowed

Affordable Housing: Up to 15 percent of base density

0.15 dwelling units allowed

Total = 1.25 dwelling unit per five gross acres

C. Regulations Common to All Uses.

Table 21.08.020B
Regulations Common to All Uses

Regulation

Standard

Exceptions

Minimum

Average Lot Size

4.5 acres

Required Density

80 percent of net acres

Lot Width Circle

100 feet

Lot Frontage

20 feet

Setbacks

Front

30 feet

For zero lot line development, a dwelling unit may be placed on one interior side property line, giving it one zero side/interior setback. If it is an interior lot line, the setback from the other side property line shall be 30 feet. See RZC 21.08.390, Zero Lot Line Development, for additional requirements.

Side / Interior (each side)

30 feet

Side Street

20 feet

Rear

30 feet

Alley

4 feet

Lake Sammamish

35 feet

Building Separation

10 feet

Minimum building separation shall be 15 feet in the following neighborhoods: Education Hill, North Redmond, and Willows/Rose Hill. In all neighborhoods, minimum building separation shall be 10 feet for cottages, size-limited dwellings, small-lot short plats, accessory dwelling units, and locations where these structures or cottages adjoin larger dwelling units.

Open Space

N/A

Maximum

Lot Coverage for Structures

2.5 percent of total lot area

Impervious Surface Area

20 percent of total lot area

Building Height

35 feet

30 feet within the Shoreline Jurisdiction

Drive-through

n/a

Drive-through facilities are prohibited except where expressly permitted in the Allowed Uses and Special Regulations table below.

D. Allowed Uses and Special Regulations. The following table contains special zoning regulations that apply to uses in the RA-5 zone. To use the chart, first read down the left-hand column titled “Use.” When you have located the use that interests you, read across to find regulations that apply to that use. Uses are permitted unless otherwise specified in the Special Regulations column. Permitted uses may require land use permit approval. See RZC 21.76.020, Overview of the Development Process, for more information. Uses not listed are not permitted.

Table 21.08.020C
Allowed Uses and Special Regulations

Section

Use

Parking Ratio:
Unit of measure (Minimum required; Maximum allowed)

Special Regulations

Residential1

1

Detached dwelling unit

Dwelling unit (2.0)

2

Size-limited dwelling

3

Accessory dwelling unit (ADU)

ADU (1.0)

See RZC 21.08.220, Accessory Dwelling Units, for specific regulations which may apply.

4

Manufactured home

Dwelling unit (2.0)

See RZC 21.08.320, Designated Manufactured Homes, Manufactured Homes, and Mobile Homes for specific regulations which may apply.

5

Residential care facility

Dwelling unit (2.0)

A Conditional Use Permit is required

6

Adult family homes

General Sales or Service

7

Bed and Breakfast Inn

Rental room (1.0)

No more than eight rental rooms are permitted.

8

Animal kennel

N/A

A Conditional Use Permit is required. See RZC 21.08.250, Animal Boarding: Kennels, Shelters, and Equestrian Facilities, for specific regulations which may apply.

Transportation, Communication, Information, and Utilities

9

Local utilities

Adequate to accommodate peak use.

10

Regional utilities

A Conditional Use Permit is required.

11

Heliport

N/A

A Conditional Use Permit is required. Does not include medical airlift. Permitted only abutting Lake Sammamish.

12

Float plane facility

A. A Conditional Use Permit is required. Permitted only abutting Lake Sammamish.

B. Piers, docks, and floats associated with the operation of float planes shall meet, as a minimum, the location criteria contained in RZC 21.68.070, In-Water Structures. Piers and docks are also subject to standards for residential piers and docks contained in RZC 21.68.070.E, Piers, Docks, and Floats. (SMP)

C. Only one float plane per lot is permitted. (SMP)

D. Float planes shall observe speed regulations for watercraft and vessels contained in RMC 14.16.030, Speed Regulations, except that these speeds may be exceeded for a short duration of time during landing and takeoff of planes. (SMP)

E. Float plane facilities or operation of float planes is prohibited on the Sammamish River, Bear Creek and Evans Creek. (SMP)

F. Float plane facilities and operation shall comply with FAA standards, including standards for fueling, oil spill cleanup, firefighting equipment, and vehicle and pedestrian separation. (SMP)

13

Wireless Communication Facilities

See RZC 21.56, Wireless Communication Facilities, for specific regulations that may apply.

Arts, Entertainment, and Recreation

14

Community indoor recreation

Adequate to accommodate peak use.

A Conditional Use Permit is required. Includes noncommercial indoor recreation uses, such as community clubhouses, indoor swimming pools, and other similar facilities.

15

Parks, open space, trails and gardens

1,000 sq ft gfa (0, adequate to accommodate peak use).

Permitted if public or noncommercial. A Conditional Use Permit is required for commercial facilities.

16

Athletic, sports, and play fields

Adequate to accommodate peak use.

A Conditional Use Permit is required.

17

Golf course

18

Marine recreation

19

Commercial swimming pool

Education, Public Administration, Health Care, and Other Institutions

20

Public safety

Adequate to accommodate peak use.

A Conditional Use Permit is required.

21

Family day care provider

Vehicle used by the business (1.0).

Family day care providers are permitted as home businesses. See RZC 21.08.340, Home Business, for specific regulations which may apply.

Agriculture

22

Crop production

N/A

23

Equestrian facility

See RZC 21.08.250, Animal Boarding: Kennels, Shelters, and Equestrian Facilities, for specific regulations which may apply.

24

Animal production

All commercial livestock, dairy and fowl enterprises must meet Seattle-King County Health Department regulations and the regulations of Redmond’s Municipal Code. Personal, noncommercial livestock, dairy, and fowl activities are considered an accessory use and are allowed in all residential zones, provided that all Health Department and Municipal Code requirements are met.

Other

25

Home Business

Vehicle used by the business (1.0).

See RZC 21.08.340, Home Business, for specific regulations which may apply.

26

Roadside produce stand

N/A

27

Pier, dock, float

See RZC 21.68.070, In-Water Structures, for special height, setback and area requirements (SMP).

38

Water-oriented accessory structure

See RZC 21.68.070.G, Water-Oriented Accessory Structures, for special height, setback and area requirements (SMP).

Notes:

1Permanent supportive housing, as defined under RCW 36.70A.030, and transitional housing, as defined under RCW Chapter 84.36, are allowed in all land use districts where residential dwellings and/or hotel uses are allowed, subject to RZC 21.57.010, Permanent Supportive Housing, Transitional Housing, and Emergency Housing.

(Ord. 2652; Ord. 2709; Ord. 2803; Ord. 2919; Ord. 3028; Ord. 3074)

Effective on: 2/12/2022