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COMCOR - Code of Montgomery County Regulations
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CHAPTER 1. GENERAL PROVISIONS - REGULATIONS
CHAPTER 1A. STRUCTURE OF COUNTY GOVERNMENT - REGULATIONS
CHAPTER 2. ADMINISTRATION - REGULATIONS
CHAPTER 2B. AGRICULTURAL LAND PRESERVATION - REGULATIONS
CHAPTER 3. AIR QUALITY CONTROL - REGULATIONS
CHAPTER 3A. ALARMS - REGULATIONS
CHAPTER 5. ANIMAL CONTROL - REGULATIONS
CHAPTER 8. BUILDINGS - REGULATIONS
CHAPTER 8A. CABLE COMMUNICATIONS - REGULATIONS
CHAPTER 10B. COMMON OWNERSHIP COMMUNITIES - REGULATIONS
CHAPTER 11. CONSUMER PROTECTION - REGULATIONS
CHAPTER 11A. CONDOMINIUMS - REGULATIONS
CHAPTER 11B. CONTRACTS AND PROCUREMENT - REGULATIONS
CHAPTER 13. DETENTION CENTERS AND REHABILITATION FACILITIES - REGULATIONS
CHAPTER 15. EATING AND DRINKING ESTABLISHMENTS - REGULATIONS
CHAPTER 16. ELECTIONS - REGULATIONS
CHAPTER 17. ELECTRICITY - REGULATIONS
CHAPTER 18A. ENERGY POLICY - REGULATIONS
CHAPTER 19. EROSION, SEDIMENT CONTROL AND STORMWATER MANAGEMENT - REGULATIONS
CHAPTER 19A. ETHICS - REGULATIONS
CHAPTER 20 FINANCE - REGULATIONS
CHAPTER 21 FIRE AND RESCUE SERVICES - REGULATIONS
CHAPTER 22. FIRE SAFETY CODE - REGULATIONS
CHAPTER 22A. FOREST CONSERVATION - TREES - REGULATIONS
CHAPTER 23A. GROUP HOMES - REGULATIONS
CHAPTER 24. HEALTH AND SANITATION - REGULATIONS
CHAPTER 24A. HISTORIC RESOURCES PRESERVATION - REGULATIONS
CHAPTER 24B. HOMEOWNERS’ ASSOCIATIONS - REGULATIONS
CHAPTER 25. HOSPITALS, SANITARIUMS, NURSING AND CARE HOMES - REGULATIONS
CHAPTER 25A. HOUSING, MODERATELY PRICED - REGULATIONS
CHAPTER 25B. HOUSING POLICY - REGULATIONS
CHAPTER 26. HOUSING AND BUILDING MAINTENANCE STANDARDS - REGULATIONS
CHAPTER 27. HUMAN RIGHTS AND CIVIL LIBERTIES - REGULATIONS
CHAPTER 27A. INDIVIDUAL WATER SUPPLY AND SEWAGE DISPOSAL FACILITIES - REGULATIONS
CHAPTER 29. LANDLORD-TENANT RELATIONS - REGULATIONS
CHAPTER 30. LICENSING AND REGULATIONS GENERALLY - REGULATIONS
CHAPTER 30C. MOTOR VEHICLE TOWING AND IMMOBILIZATION ON PRIVATE PROPERTY - REGULATIONS
CHAPTER 31. MOTOR VEHICLES AND TRAFFIC - REGULATIONS
CHAPTER 31A. MOTOR VEHICLE REPAIR AND TOWING REGISTRATION - REGULATIONS
CHAPTER 31B. NOISE CONTROL - REGULATIONS
CHAPTER 31C. NEW HOME BUILDER AND SELLER REGISTRATION AND WARRANTY - REGULATIONS
CHAPTER 33. PERSONNEL AND HUMAN RESOURCES - REGULATIONS
CHAPTER 33B. PESTICIDES - REGULATIONS
CHAPTER 35. POLICE - REGULATIONS
CHAPTER 36. POND SAFETY - REGULATIONS
CHAPTER 38A. RADIO, TELEVISION AND ELECTRICAL APPLIANCE INSTALLATION AND REPAIRS - REGULATIONS
CHAPTER 40. REAL PROPERTY - REGULATIONS
CHAPTER 41. RECREATION AND RECREATION FACILITIES - REGULATIONS
CHAPTER 41A. RENTAL ASSISTANCE - REGULATIONS
CHAPTER 42A. RIDESHARING AND TRANSPORTATION MANAGEMENT - REGULATIONS
CHAPTER 44. SCHOOLS AND CAMPS - REGULATIONS
CHAPTER 44A. SECONDHAND PERSONAL PROPERTY - REGULATIONS
CHAPTER 45. SEWERS, SEWAGE DISPOSAL AND DRAINAGE - REGULATIONS
CHAPTER 47. VENDORS - REGULATIONS
CHAPTER 48. SOLID WASTES - REGULATIONS
CHAPTER 49. STREETS AND ROADS - REGULATIONS
CHAPTER 50. SUBDIVISION OF LAND - REGULATIONS
CHAPTER 51 SWIMMING POOLS - REGULATIONS
CHAPTER 51A. TANNING FACILITIES - REGULATIONS
CHAPTER 52. TAXATION - REGULATIONS
CHAPTER 53. TAXICABS - REGULATIONS
CHAPTER 53A. TENANT DISPLACEMENT - REGULATIONS
CHAPTER 54. TRANSIENT LODGING FACILITIES - REGULATIONS
CHAPTER 55. TREE CANOPY - REGULATIONS
CHAPTER 56. URBAN RENEWAL AND COMMUNITY DEVELOPMENT - REGULATIONS
CHAPTER 56A. VIDEO GAMES - REGULATIONS
CHAPTER 57. WEAPONS - REGULATIONS
CHAPTER 59. ZONING - REGULATIONS
CHAPTER 60. SILVER SPRING, BETHESDA, WHEATON AND MONTGOMERY HILLS PARKING LOT DISTRICTS - REGULATIONS
MISCELLANEOUS MONTGOMERY COUNTY REGULATIONS
TABLE 1 Previous COMCOR Number to Current COMCOR Number
TABLE 2 Executive Regulation Number to Current COMCOR Number
TABLE 3 Executive Order Number to Current COMCOR Number
INDEX BY AGENCY
INDEX BY SUBJECT
County Attorney Opinions and Advice of Counsel
Section 4.5.3. Standard Method Development
The CRN, CRT, and CR zones allow standard method development under the following limitations and requirements.
A.   In General
1.   In the Commercial/Residential zones, the maximum total, nonresidential, and residential FAR and maximum height for any property are set by the zone shown on the zoning map, unless additional height and density is permitted under Section 4.5.2.C.
2.   In the CRT and CR zones, the maximum standard method height for any property is the height set by the zone shown on the zoning map; the maximum total standard method FAR for any property is the limit indicated in the following table, unless shown as lower on the zoning map:
 
Zone
Total Density (max)
CRT
The greater of 1.0 FAR or 10,000 SF of gross floor area
CR
The greater of 0.5 FAR or 10,000 SF of gross floor area
B.   Procedure for Approval
1.   Site plan approval may be required under Section 7.3.4.A.8.
2.   An applicant may file a site plan application to modify the Build-to Area, Building Orientation, and Transparency requirements under Section 4.5.3.C.3.
3.   Site plan approval is required for applications that develop under Section 4.5.2.C.
C.   CRN, CRT, and CR Zones, Standard Method Development Standards
To view the CRN, CRT, and CR Zones, Standard Method Development Standards table in PDF format, click Table 4.5.3C
1. Site
Detached House
Duplex - Side
Duplex - Over
Townhouse
Apartment
Multi Use
General
1. Site
Detached House
Duplex - Side
Duplex - Over
Townhouse
Apartment
Multi Use
General
Open Space (min)
Open space, tract  10,000 SF
n/a
n/a
n/a
10%
0%
0%
0%
Open space, tract > 10,000 SF
n/a
n/a
n/a
10%
10%
10%
10%
Specifications for all Open Space
a. In a development with townhouse, apartment, multi use, or general building types, open space is calculated on the area of the site minus any area for detached house and duplex lots.
b. Open space for the townhouse building type is common open space (see Section 6.3.5), and for other building types is public open space (see Section 6.3.6).
2. Lot and Density
Lot (min)
Lot area
1,000 SF
500 SF
1,000 SF
800 SF
n/a
n/a
n/a
Lot width at front building line
25'
12.5'
25'
12'
n/a
n/a
n/a
Lot width at front lot line
10'
10'
10'
n/a
n/a
n/a
n/a
Density (max)
CRN Density, FAR
mapped
CRT Density, FAR
The lesser of: mapped FAR or the greater of 10,000 SF or 1.0 FAR
CR Density, FAR
The lesser of: mapped FAR or the greater of 10,000 SF or 0.5 FAR
Specification for Density
a. In the CR zone, a designated historic resource that does not occupy more than 10% of the gross floor area is excluded from the FAR calculation.
b. Density may be increased above the limits in Section 4.5.3.C.2. for projects developed under Section 4.5.2.C.
Coverage (max)
Lot
90%
90%
90%
n/a
n/a
n/a
n/a
3. Placement
Principal Building Setbacks (min)
Front setback
5'
5'
5'
5'
0'
0'
0'
Side street setback
5'
5'
5'
5'
0'
0'
0'
Side setback, abutting Agricultural, Rural Residential, Residential Detached, or Residential Townhouse zones
6'
6'
6'
4'
See Section 4.1.8.A
Side setback, abutting all other zones
4'
4'
4'
n/a
0'
0'
0'
Side setback, end unit
n/a
n/a
n/a
2'
n/a
n/a
n/a
Side setback between lot and site boundary
n/a
n/a
n/a
4'
n/a
n/a
n/a
Rear setback, abutting Agricultural, Rural Residential, Residential Detached, or Residential Townhouse zones
15'
15'
15'
10'
See Section 4.1.8.A
Rear setback, abutting all other zones
15'
15'
15'
10'
0'
0'
0'
Rear setback, alley
4'
4'
4'
4'
4'
4'
4'
Rear setback between lot and site boundary
n/a
n/a
n/a
5'
n/a
n/a
n/a
Accessory Structure Setbacks (min)
Front setback, behind front building line
5'
5'
5'
5'
0'
0'
0'
Side street setback
15'
15'
15'
5'
0'
0'
0'
Side setback
4'
4'
4'
4'
equal to Principal Building Setback
Rear setback
4'
4'
4'
4'
equal to Principal Building Setback
Rear setback, alley
4'
4'
4'
4'
4'
4'
4'
Parking Setbacks for Surface Parking Lots (min)
Front setback
n/a
n/a
n/a
n/a
must be behind front building line of building in the BTA
Side street setback
n/a
n/a
n/a
n/a
must be behind side street building line of building in the BTA
Side setback
n/a
n/a
n/a
n/a
must accommodate landscaping required under Section 6.2.9
Rear setback
n/a
n/a
n/a
n/a
must accommodate landscaping required under Section 6.2.9
Rear setback, alley
n/a
n/a
n/a
n/a
0'
0'
0'
Build-to Area (BTA, max setback and min % of building façade)
Front setback
n/a
n/a
n/a
15'
30'
15'
20'
Building in front street BTA
n/a
n/a
n/a
70%
70%
70%
70%
Side street setback
n/a
n/a
n/a
n/a
30'
15'
20'
Building in side street BTA
n/a
n/a
n/a
n/a
35%
35%
35%
Specifications for Build-to Area
a. The Build-to Area maximum front or side street setback may be increased by the minimum setback necessary to avoid a platted public transportation or utility easement, or a platted public transportation or utility reservation.
b. The Build-to Area requirements may be modified by the Planning Board during site plan review under Section 7.3.4. In approving a site plan submitted under this subsection, the Planning Board must find that the plan: (1) deviates from the Build-to Area requirements only to the extent necessary to accommodate the physical constraints of the site or the proposed land use; and (2) incorporates design elements that engage the surrounding publicly accessible spaces such as streets, sidewalks, and parks.
4. Height
Height (max)
Principal building
mapped and Section 4.1.8.B
Accessory structure
25'
25'
25'
25'
mapped and Section 4.1.8.B
5. Form
Massing (max)
Units permitted in one row
n/a
n/a
n/a
12
n/a
n/a
n/a
Building Orientation
Entrance facing street or open space
required
required
required
required
required
required
required
Entrance spacing (max)
n/a
n/a
n/a
n/a
100'
75'
100'
Transparency, for Walls Facing a Street or Open Space
Ground story, front (min)
n/a
n/a
n/a
n/a
20%
60%
40%
Ground story, side/rear (min)
n/a
n/a
n/a
n/a
20%
30%
25%
Upper story (min)
n/a
n/a
n/a
n/a
20%
20%
20%
Blank wall, front (max)
n/a
n/a
n/a
35'
35'
25'
35
Blank wall, side/rear (max)
n/a
n/a
n/a
35'
35'
35'
35'
Specification for Building Orientation and Transparency
a. Building Orientation and Transparency requirements may be modified by the Planning Board in a site plan under Section 7.3.4. In approving a site plan submitted under this subsection, the Planning Board must find that the plan: (1) deviates from the Building Orientation and Transparency requirements only to the extent necessary to accommodate the physical constraints of the site or the proposed land use; and (2) incorporates design elements that engage the surrounding publicly accessible spaces such as streets, sidewalks, and parks.
Allowed Building Elements
Gallery/Awning
n/a
n/a
n/a
n/a
yes
yes
yes
Porch/Stoop
yes
yes
yes
yes
yes
yes
yes
Balcony
yes
yes
yes
yes
yes
yes
yes
 
(Legislative History: Ord. No. 18-03, § 3; Ord. No. 18-08, § 10; Ord. No. 19-36, § 1.)