The purpose of the R20 zoning district is to:

A.

Provide an alternative to conventional single family housing types, forms and densities to address the rising cost of housing in Duvall, encourage the development of workforce housing, and provide more rental opportunities;

B.

Promote attractive, high quality, and high density development consistent with design guidelines.

C.

Encourage in-fill to accommodate existing and future population growth.

(Ord. No. 1336, § 6(Exh. E), 6-5-2025; Ord. No. 1231, § 4(Exh. C2), 12-19-2017; Ord. No. 1195, § 2, 6-7-2016)

Permitted uses in the R20 zoning district are:

A.

Accessory dwelling units (see DMC Chapter 14.48);

B.

Adult family home;

C.

Assisted living facility;

D.

Carriage housing;

E.

Cottage or other innovative housing development;

F.

Day care facility

G.

Dwelling unit, attached;

H.

Dwelling unit, detached;

I.

Dwelling unit, multifamily;

J.

Pea-patches/Community Gardens;

K.

Work force housing;

L.

Recreational trail, nonmotorized;

M.

Park, public or private.

(Ord. No. 1336, § 6(Exh. E), 6-5-2025; Ord. No. 1231, § 4(Exh. C2), 12-19-2017; Ord. No. 1195, § 2, 6-7-2016)

Accessory uses in the R20 zoning district are permitted if they are incidental to a primary dwelling unit on the same lot or an adjacent lot owned by the same property owner and established solely for the property owner's use. Sale of either lot individually shall make the accessory use of the lot void. Detached structures accommodating accessory uses shall not be allowed in the front yard.

Accessory uses in the R20 zoning district are as follows:

A.

Accessory Buildings (community room, cabana, etc.)

B.

Family day care;

C.

Home occupation (see DMC Chapter 14.54);

D.

On-site rental office;

E.

Pools;

F.

Garages;

G.

Antennae or satellite dish for private telecommunication services;

H.

Storage sheds;

I.

Other accessory use or structure which is subordinate and incidental to a principally permitted use, as determined by the Director.

(Ord. No. 1336, § 6(Exh. E), 6-5-2025; Ord. No. 1231, § 4(Exh. C2), 12-19-2017; Ord. No. 1195, § 2, 6-7-2016)

Uses permitted in the R20 zoning district subject to conditional use permit are:

A.

Community residential facility;

B.

Bed and breakfast;

C.

Cultural facilities, including libraries, museums, arboretums, conference centers, community centers;

D.

Governmental services (police, court, fire, City Hall or similar local government offices not including public works yard or sewer treatment plant);

E.

K—12 schools, public or private;

F.

Religious institutions;

G.

Subregional utility substations;

H.

Wireless facilities attached to an existing building or structure (see DMC Chapter 14.56).

(Ord. No. 1336, § 6(Exh. E), 6-5-2025; Ord. No. 1231, § 4(Exh. C2), 12-19-2017; Ord. No. 1195, § 2, 6-7-2016)

A.

The following density and dimension requirements apply to the R20 zone.

Table 14.16.050A
Density and Dimension Requirements

¹  Porches or stoops may project up to two feet into the required front yard setback.

²  Rear yard setback does not apply to alley loaded lots.

³  The setback is intended for sixteen (16) to twenty (20) alleys and tracts.

⁴  Three floors allowed.

⁵  See DMC Chapter 14.64 for building height calculations.

⁶  Maximum impervious surface (Gross area minus sensitive areas)

⁷  Detached accessory dwelling units may be located at a lot line if the lot line abuts a public alley.

B.

DMC [Chapter] 14.34 Design Guidelines, DMC [Chapter] 14.64 Additional Development Standards and Public Works Design Standards also apply to the R20 zone.

C.

All development within the R20 zone district shall be developed in accordance with a master development plan through the site plan review process established in DMC Chapter 14.08. The plan must demonstrate that the site is being developed in an integrated and cohesive manner, and include elements such as alley loaded residential units, pedestrian connections, and usable open space in the residential portions, and pedestrian scaled buildings, plazas, and outdoor seating in any commercial portions of the site.

(Ord. No. 1336, § 6(Exh. E), 6-5-2025; Ord. No. 1231, § 4(Exh. C2), 12-19-2017; Ord. No. 1195, § 2, 6-7-2016)