Building Departments in Frederick County, Maryland

There are 4 Building Departments in Frederick County, Maryland, serving a population of 246,105 people in an area of 661 square miles. There is 1 Building Department per 61,526 people, and 1 Building Department per 165 square miles.

In Maryland, Frederick County is ranked 11th of 24 counties in Building Departments per capita, and 10th of 24 counties in Building Departments per square mile.

List of Frederick County Building Departments

Find Frederick County, Maryland building departments, planning, permits, zoning, and inspections.


Frederick City Building Department 140 West Patrick Street Frederick, MD

Frederick County Permits 12 East Church Street Frederick, MD

Frederick County Planning & Zone 30 North Market Street Frederick, MD

Frederick Planning Department 140 West Patrick Street Frederick, MD

About the Frederick County Building Department

Building Departments in Frederick County, MD are responsible for ensuring safe construction of buildings located in their jurisdictions. Building Departments create building codes and standards for building construction to ensure building safety. The Frederick County DOB is involved in all aspects of construction, including zoning laws, design requirements, building materials, trade and professional license regulation.

You may contact the Building Department for questions about:
  • Frederick County, Maryland building inspection records
  • Contractor license searches
  • Frederick County building codes
  • Building permit violations, appeals, and fines
  • Construction permits and building ordinances
  • Frederick County, MD zoning laws and requirements

Frederick County Building Structure & Housing Statistics

Find Frederick County Residential Housing Units, Occupied Residential Buildings, Occupied Residential Buildings Construction Year, Occupied Residential Buildings Room Characteristics, Occupied Residential Buildings Bedroom Characteristics, and Occupied Residential Building Facility Characteristics. Data Source: U.S. Census Bureau; American Community Survey, 2017 ACS 5-Year Estimates.

Frederick County Residential Housing Units
 Frederick CountyMaryland
Total Housing Units94,6882,427,014
Occupied Housing Units90,022 (95.1%)2,181,093 (89.9%)
Frederick County Occupied Residential Buildings
 Frederick CountyMaryland
Single-Family Detached Homes56,817 (63.1%)1,158,356 (53.1%)
Single-Family Attached Homes18,195 (20.2%)459,488 (21.1%)
2 Apartments900 (1.0%)29,128 (1.3%)
3 or 4 Apartments1,320 (1.5%)44,991 (2.1%)
5 to 9 Apartments2,587 (2.9%)106,101 (4.9%)
10 or More Apartments9,565 (10.6%)354,951 (16.3%)
Mobile Home or Other Type of Housing638 (0.7%)28,078 (1.3%)
Frederick County Occupied Residential Buildings Construction Year
 Frederick CountyMaryland
2014 or Later1,027 (1.1%)17,675 (0.8%)
2010 to 20132,580 (2.9%)52,604 (2.4%)
2000 to 200916,263 (18.1%)260,846 (12.0%)
1980 to 199935,736 (39.7%)671,719 (30.8%)
1960 to 197917,943 (19.9%)568,321 (26.1%)
1940 to 19596,010 (6.7%)372,876 (17.1%)
1939 or Earlier10,463 (11.6%)237,052 (10.9%)
Frederick County Occupied Residential Buildings Room Characteristics
 Frederick CountyMaryland
1 Room549 (0.6%)27,124 (1.2%)
2 or 3 Rooms5,088 (5.7%)190,564 (8.7%)
4 or 5 Rooms19,140 (21.3%)572,371 (26.2%)
6 or 7 Rooms28,692 (31.9%)671,326 (30.8%)
8 or More Rooms36,553 (40.6%)719,708 (33.0%)
Frederick County Occupied Residential Buildings Bedroom Characteristics
 Frederick CountyMaryland
No Bedroom636 (0.7%)31,145 (1.4%)
1 Bedroom5,755 (6.4%)214,444 (9.8%)
2 or 3 Bedrooms50,447 (56.0%)1,274,867 (58.5%)
4 or More Bedrooms33,184 (36.9%)660,637 (30.3%)
Frederick County Occupied Residential Building Facility Characteristics
 Frederick CountyMaryland
With Complete Plumbing Facilities89,758 (99.7%)2,174,324 (99.7%)
With Complete Kitchen Facilities89,313 (99.2%)2,169,342 (99.5%)