The Medium Density Residential Zone is intended to accommodate a variety of housing types including single-family dwellings, duplexes and, where appropriate, manufactured dwelling subdivisions and manufactured dwelling parks. This intensity of residential use is envisioned for locations in the City where community services and adequate access are available. Residential densities permitted are somewhat greater than those permitted in an R-10 zone. Certain public facilities and other nonresidential uses are also permitted when desirable conditions and safeguards are satisfied. Those lands in the Hammond area that were in the Hammond R-6 zone have been placed in this zone.
The following uses and their accessory uses are permitted in the R-M Zone if the Community Development Director determines that the uses conform to the standards in Sections 16.32.040 through 16.32.050, and any other applicable Development Code standards, and other City laws:
A. 
Single-family detached dwelling.
B. 
Modular home.
C. 
Manufactured home subject to the standards in Chapter 16.168.
D. 
Duplex, townhome, and triplex subject to standards of Chapter 16.184.
E. 
Residential home.
F. 
Residential (care) facility.
G. 
Day care.
H. 
Master planned development with a minimum lot size of three contiguous acres, subject to provisions in Chapter 16.224.
I. 
A temporary dwelling for no more than six months while building a permanent residence.
J. 
Accessory structure no larger than 1,200 square feet, in conjunction with an existing residence on the same property, and subject to standards of Chapter 16.180.
K. 
Transportation facilities and improvements subject to the standards of Section 16.20.040.
L. 
Dredge material disposal (DMD) subject to Section 16.32.050 (Sites 19S and 21S) and Chapter 16.104.
M. 
Similar uses as those stated above.
N. 
Community garden(s) (see definitions).
O. 
Incidental sales of firewood, cut flowers, produce grown on the premises, lemonade, and similar items.
P. 
Home occupations.
Q. 
Accessory dwelling that complies with Section 16.180.040.
R. 
Homestay lodging subject to the standards in Chapter 8.24.
(Ord. 1175-A § 6, 2013; Ord. 1221 § 2, 2018; Ord. 1234 § 1, 2020; Ord. 1248 § 2, 2021)
The following uses and their accessory uses may be permitted when approved under Chapter 16.220:
A. 
Church, synagogue, or other place of worship.
B. 
Government buildings and uses subject to applicable standards of Sections 16.32.040(C) and 16.32.050.
C. 
Hospital sanitarium, rest home, nursing or convalescent home.
D. 
School: nursery, primary, elementary, junior or senior high; private or public.
E. 
Child care center.
F. 
Public utility structure.
G. 
Parks, playgrounds, and community centers.
H. 
Bed and breakfast.
I. 
Manufactured dwelling park subject to standards in Chapter 16.172.
J. 
Accessory dwelling that complies with Section 16.180.040.
K. 
Similar uses as those stated above.
(Ord. 1175-A § 7, 2013)
The following development standards are applicable in the R-M zone:
A. 
Density Provisions.
1. 
Minimum lot area for single-family detached dwelling or duplex: 5,000 square feet. Minimum density is eight dwelling units per acre.
2. 
Minimum lot area for single-family attached dwelling: 2,500 square feet.
3. 
Minimum lot width at the front building line for single-family detached dwelling or duplex: 50 feet.
4. 
Minimum lot width at the front building line for single-family attached dwelling: 25 feet.
5. 
Minimum lot depth: 70 feet.
6. 
Not more than 40% of the lot area shall be covered by buildings, except as may be permitted by conditional use permit or variance.
7. 
Maximum building height: 30 feet.
B. 
Setback Requirements.
1. 
Minimum front yard setback: 15 feet.
2. 
Minimum side yard setback: 8 feet.
3. 
Corner lot minimum street side yard setback: 8 feet.
4. 
Minimum rear yard setback: 15 feet, except accessory structures that meet the criteria of Section 16.280.020 may extend to within five feet of a rear property line.
5. 
Corner lot minimum rear yard setback: 10 feet.
C. 
Government Building. The following development standards are applicable:
1. 
Density provisions:
a. 
Minimum lot size, government building/uses: none.
b. 
Minimum lot width, government building/uses: none.
c. 
Minimum lot depth, government building/uses: none.
d. 
Maximum building height: 45 feet.
e. 
Maximum lot coverage, government building/uses: none.
2. 
Setback requirements:
a. 
Minimum front and rear yard setback, government building: 15 feet.
b. 
Minimum side yard setbacks, government building: 10 feet.
3. 
Landscaping requirements shall comply with Chapter 16.124 of the Development Code.
4. 
Any government building shall comply with Chapter 16.116 of the Development Code.
(Ord. 1234 § 1, 2020)
A. 
Outside sales and service areas shall be approved by the Warrenton Planning Commission if not enclosed by suitable vegetation, fencing or walls.
B. 
Outside storage areas shall be enclosed by suitable vegetation, fencing or walls, in conformance with Chapter 16.124.
C. 
All uses shall comply with access and parking standards in Chapters 16.116 and 16.128 except as may be permitted by conditional use or variance.
D. 
Signs shall comply with standards in Chapter 16.144.
E. 
All development shall comply with the wetland and riparian area protection standards of Chapter 16.156.
F. 
All other applicable Development Code requirements shall also be satisfied.
G. 
All uses must comply with the criteria of Chapter 16.124, Landscaping, Street Trees, Fences and Walls.
H. 
Manufactured homes must comply with the criteria of Chapter 16.168.
I. 
Manufactured dwelling parks shall comply with the criteria of Chapter 16.172.
J. 
Duplexes and townhomes shall comply with standards of Chapter 16.184.
K. 
A garage or carport is required for each dwelling unit and shall conform to the standards of Chapter 16.180.
L. 
All other applicable Development Code requirements must be met.
M. 
All new sewer and water connections for a proposed development shall comply with all City regulations.
N. 
Master planned development with a minimum lot size of three contiguous acres, subject to provisions in Chapter 16.224.
O. 
Accessory structures no larger than 1,200 square feet, in conjunction with an existing residence on the same property, and subject to standards of Chapter 16.180.
P. 
Manufactured dwelling placed in an approved manufactured dwelling park subject to standards in Chapter 16.172 and ORS Chapter 446.
Q. 
Accessory dwelling that complies with Section 16.180.040.
R. 
Prior to undertaking disposal, the dredging project proponent shall consult with the Army Corps and Oregon DSL to determine if the disposal site contains wetlands that are regulated under permit programs administered by those agencies. If the site contains regulated wetlands, the dredging project proponent shall either alter the disposal site boundaries to avoid the wetlands and leave an acceptable protective buffer, or obtain the necessary Corps and DSL permits to fill the wetlands.