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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 4.4.12. Townhouse Medium Density Zone (TMD)
A.   Intent Statement
The intent of the TMD zone is to provide designated areas of the County for residential purposes at slightly higher densities than the R-90, R-60, and R-40 zones. It is also the intent of the TMD zone to provide a buffer or transition between nonresidential or high-density residential uses and the medium- or low-density Residential zones.
B.   TMD Zone, Standard Method Development Standards
To view the TMD Zone, Standard Method Development Standards table in PDF format, click Table 4.4.12B
1. Site
Detached House or a Building for a Cultural Institution, Religious Assembly, Public Use, or a Conditional Use allowed in the zone
Duplex - Side
Duplex - Over
Townhouse
1. Site
Detached House or a Building for a Cultural Institution, Religious Assembly, Public Use, or a Conditional Use allowed in the zone
Duplex - Side
Duplex - Over
Townhouse
Site Area (min)
Site
3,600 SF
3,600 SF
3,600 SF
n/a
Site per unit
n/a
n/a
n/a
3,600 SF
Open Space (min)
Common open space (% of site) (See Section 6.3.5)
n/a
n/a
n/a
20%
Site Coverage (max)
Site coverage
n/a
n/a
n/a
40%
Specification for Open Space and Site Coverage
a. In development with a townhouse building type, open space and site coverage are calculated based on the area of the site minus any area for detached house and duplex lots.
2. Lot and Density
Lot (min)
Lot area
3,600 SF
1,800 SF
3,600 SF
1,100 SF
Lot width at front building line
30'
15'
30'
n/a
Lot width at front lot line
10'
10'
10'
n/a
Frontage on street or open space
Required
Density (max)
Density (units/acre)
12.10
12.10
12.10
12.10
Coverage (max)
Lot
40%
40%
40%
n/a
3. Placement
Principal Building Setbacks (min)
Front setback, public street
20'
20'
20'
20'
Front setback, private street or open space
4'
4'
4'
4'
Side street setback
15'
15'
15'
5'
Side setback, abutting Agricultural, Rural Residential, or Residential zones
6'
6'
6'
n/a
Side setback, abutting all other zones
4'
4'
4'
n/a
Side setback, end unit
n/a
n/a
n/a
3'
Side setback between lot and site boundary
n/a
n/a
n/a
5'
Rear setback
20'
20'
20'
20'
Rear setback, alley
4'
4'
4'
4'
Rear setback between lot and site boundary
n/a
n/a
n/a
10'
Accessory Structure Setbacks (min)
Front setback, behind front building line
10'
10'
10'
10'
Side street setback
15'
15'
15'
5'
Side setback
4'
4'
4'
4'
Rear setback
4'
4'
4'
0'
Rear setback, alley
4'
4'
4'
4'
4. Height
Height (max)
Principal building
35'
35'
35'
40'
Accessory Structure
25'
25'
25'
25'
5. Form
Massing (max)
Units permitted in one row
n/a
n/a
n/a
10
Building Orientation
Entrance facing street or open space
n/a
n/a
n/a
required
Allowed Building Elements
Gallery/Awning
n/a
n/a
n/a
n/a
Porch/Stoop
yes
yes
yes
yes
Balcony
yes
yes
yes
yes
 
C.   TMD Zone, Optional Method Development Standards
To view the TMD Zone, Optional Method Development Standards table in PDF format, click Table 4.4.12C
1. Site
MPDU Development
Detached House
Duplex
Townhouse
1. Site
MPDU Development
Detached House
Duplex
Townhouse
Dimensions (min)
Usable area
20,000 SF
Density (max)
Density (units/acre)
See Specification for Density
Specification for Density
The density allowed for any application that includes more than 12.5% MPDUs, qualified under Chapter 25A and rounded up to the nearest whole number of units, equals the density allowed under Sec. 4.4.12.B.2 plus an increase of:
a.   0.88% for each 0.1% increase in MPDUs above 12.5%, up to and including 15%;
b.   22% plus 0.16% for each 0.1% increase in MPDUs above 15%, up to and including 20%; or
c.   30% plus 0.1% for each 0.1% increase in MPDUs above 20%.
Open Space (min)
Common open space (% of usable area) (See Section 6.3.5)
20%
Site Coverage (max)
Site coverage
n/a
n/a
40%
Specification for Site Coverage
a. In development with a townhouse building type, site coverage is calculated based on the area of the site minus any area for detached house and duplex lots.
2. Lot
Dimensions (min)
Lot area
2,000 SF
1,000 SF
800 SF
Lot width at front building line
Determined at site plan
Lot width at front lot line
15'
15'
14'
Frontage on street or open space
Required
Coverage (max)
Lot
60%
60%
n/a
3. Placement
Principal Building Setbacks (min)
Front setback from public street
10'
10'
10'
Front setback from private street or open space
4'
4'
4'
Side street setback
10'
10'
10'
Side or rear setback
Determined at site plan
Side or rear setback, abutting property not included in application
Equal to required setback for a detached house building type in the abutting zone under standard method
Rear setback, alley
4'
4'
4'
Accessory Structure Setbacks (min)
Front setback
5' behind front building line
Side street setback
Side street setback of principal building
Side or rear setback
Determined at site plan
Side or rear setback, abutting property not included in application
Equal to required setback for a detached house building type in the abutting zone under standard method
Rear setback, alley
4'
4'
4'
4. Height
Height (max)
Principal building
40'
40'
40'
Accessory structure
25'
25'
25'
 
(Legislative History: Ord. No. 18-08, § 9; Ord. No. 18-52, § 2.)