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Department of Buildings

In observance of the Emancipation Day holiday, DOB will be closed on Tuesday, April 16, 2024; no construction will be allowed on this day without an after-hours permit. You may report illegal construction by submitting an Illegal Construction Inspection Request Form during normal business hours or by calling 311.

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Approved Third-Party Agencies

In addition to the list of approved third-party agencies below, we’d like to introduce you to Tertius, an online marketplace for construction inspections. Tertius, Latin for “third,” is an innovative platform that easily connects residential and commercial property owners and managers with certified and approved inspectors at their convenience and within their budget. Users can either decide to use DOB inspectors (included with original cost of permits), or any of the below approved third-party inspection agencies.

If you are undertaking a building project and ready to schedule inspections, we invite you to learn more about the inspection agencies and to try Tertius today!

Department of Buildings - Approved Third-Party Inspection Agencies

Code Inspections Approved Disciplines Phone
ALPHA LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (240) 565-8100
AMAR Group LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (202) 829-2577
American Plan Review Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy, Accessibility, Green (202) 524-0471 or (202) 590-7518
Americode JPL Management LLC Structural, Mechanical, Electrical, Plumbing, Energy, Fire Protection (571) 379-4760
Building Code Inspectors, LLC  Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (202) 590-7518
CamJap Inspections Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy, Accessibility (202) 355-4029 or (202) 679-9159
Capitol FPE, LLC Fire Protection (703) 717-5628
CODEPRO LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (703) 405-7357
Consulting Engineers Contractors Architects (CECA) Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy, Accessibility (301) 967-1719
Core Engineers Consulting Group Structural, Mechanical, Electrical, Plumbing, Green (202) 464-4646
Core Inspection Services LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (301) 399-8817
CTI District Services Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy, Green (202) 601-0897
DMY Capitol, LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy, Green (202) 741-9159
ECS Capitol Services, PLLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (202) 400-2188
Elite Code Inspections, LLC Structural, Electrical, Fire Protection, Plumbing, Mechanical, Green, Energy, Accessibility (202) 746-1248
FMC & Associates Structural, Electrical, Fire Protection, Plumbing, Mechanical, Green, Energy, Accessibility (202) 863-0911

Institute for Building Technology & Safety (IBTS)

Structural, Electrical, Fire Protection, Plumbing, Mechanical, Green, Energy, Accessibility (703) 481-2017 or (703) 481-2000
KCI Associates Structural, Plumbing, Mechanical, Energy (Residential Only), Electrical (Commercial and Residential) (703) 919-0008
Lourenco Consultants, Inc. Structural, Electrical, Fire Protection, Plumbing, Mechanical, Green, Energy, Accessibility (202) 966-0042
MCP Inspections Structural, Electrical, Fire Protection, Plumbing, Mechanical, Green, Energy, Accessibility (571) 366-0185
Neway Engineering and Construction Inc. Structural, Electrical, Fire Protection, Plumbing, Mechanical, Elevator, Green, Energy, Accessibility (703) 599-5611
North Arrow, Inc. Mechanical & Electrical (202) 975-0986
Plus Engineering Structural, Electrical, Fire Protection, Plumbing, Mechanical, Elevator, Green, Energy, Accessibility (RESIDENTIAL ONLY) (703) 919-0008
Soil Consultants Engineering Inc. Structural, Electrical, Fire Protection, Plumbing, Mechanical, Energy, Accessibility (703) 366-3000
SC Stevenson Consulting, Inc. Structural, Electrical, Fire Protection, Plumbing, Mechanical, Elevator, Green, Energy, Accessibility (804) 622-8630
Trust Inspections LLC Structural, Electrical, Fire Protection, Plumbing, Mechanical, Elevator, Green, Energy, Accessibility (703) 442-0000
     
Plan Review Approved Disciplines Phone Numbers
Adonai Consultants, Inc. Elevator/Escalator (240) 770-5560
ALPHA LLC Structural, Mechanical, Electrical, Plumbing & Fire Protection, Energy (240) 565-8100
American Plan Review Structural, Mechanical, Electrical, Plumbing & Fire Protection, Green, Energy (202) 524-0471 or (202) 590-7518
Building Code Inspectors, LLC  Structural, Mechanical, Electrical, Plumbing & Fire Protection, Energy (202) 590-7518
CORE Engineers Consulting Group Structural, Electrical, Fire Protection, Plumbing, Mechanical, Elevator, Green, Energy, Accessibility (202) 464-4646
CTI District Services Inc. Structural, Electrical,Fire Protection, Plumbing, Mechanical, Elevator, Energy, Accessibility (202) 601-0897
ECS Mid-Atlantic, LLC Structural, Mechanical, Electrical, Plumbing, Green, Accessibility and Energy (703) 471-8400
Elite Code Inspections Fire Plans, Structural, Mechanical, Electrical, Plumbing, Accessibility, Energy (202) 746-1248
Elephas Engineering Fire Plans, Licensed Fire Protection Engineer (202) 812-2408
Institute for Building Technology and Safety (IBTS) Structural, Electrical, Energy,Fire Protection, Plumbing, Mechanical, Energy, Green, Accessibility (703) 481-2025
Lourenco Consultants, Inc. Structural, Electrical, Energy,Fire Protection, Plumbing, Mechanical, Green Building, (202) 966-0042
MCP Inspections Structural, Mechanical, Electrical, Plumbing, Residential Energy (571) 366-0185
North Arrow, Inc. Electrical and Mechanical (202) 975-0986
SafeBuilt LLC Structural, Mechanical, Electrical, Plumbing, Fire Protection, Energy (866) 977-4111
SC Stevenson Consulting, Inc. Fire, Green, Strutural, Mechanical, Electrical, Plumbing, Energy (804) 622-8630
Sheladia Associates, Inc. Structural, Accessibility, Mechanical, Electrical, Plumbing, Green, Energy, Fire Plans (301) 590-3939
Trust Inspections, LLC Structural, Electrical, Plumbing (703) 442-0000
     
Special Inspections Approved Disciplines Phone Numbers
ALPHA LLC Special Inspections (240) 565-8100
Bel Engineering, LLC Special Inspections (240) 830-2555
BOTA Consulting Engineers, Inc. Special Inspections (301) 552-8840
Building Envelope Consultants and Scientists, LLC  Special Inspections (888) 206-6154
CenKen Group LLC Special Inspections (410) 695-4711
CTE Construction Testing & Engineering, Inc. Special Inspections (703) 335-0182
DMY Engineering Consultants LLC Special Inspections (703) 655-0586 or (301) 768-4169
Dulles Engineering Inc. Special Inspections (405) 385-2269
Dulles Geotechnical and Material Testing Services Special Inspections (703) 999-3207
Dulles Group for Management and Technical Services, LLC Special Inspections (703) 999-3207
ECS Capitol Services, PLLC Special Inspections (202) 400-2188
ECS Mid-Atlantic, LLC Special Inspections (703) 471-8400
FMC & Associates Special Inspections (202) 863-0123
Froehling & Robertson Inc Special Inspections (703) 996-0123
GEI Consultants, Inc. Special Inspections (202) 828-9510 or (202) 828-9513
GeoCapitol Engineering, LLC Special Inspections (202) 375-7900
GeoPotential Consulting LLC Special Inspections (571) 237-4345
Geotech Engineers, Inc. Special Inspections (301) 937-9227
Geotech-Environmental Solutions, LLC Special Inspections (804) 512-3388
Geotechnical Soultions, Inc. Special Inspections (703) 657-0014
Geo-Technology & Associates Special Inspections (410) 792-9446
Hillis Carnes Capitol Services, PLLC Special Inspections (202) 791-3788
Kim Engineering Special Inspections (240) 614-7678
Kleinfelder, Inc. Special Inspections (443) 393-7737
KTLH Engineers, P.C. Special Inspections (202) 833-8622
Mafi & Asociates, Inc. Special Inspections (301) 537-2346
McKeever Service Corporation (MSC) Special Inspections (703) 691-1100
Meyer Consulting Engineers Corporation Special Inspections (301) 738-5690
MTI Engineering & Testing, Inc Special Inspections (703) 766-0220
Mueser Rutledge Consulting Engineers Special Inspections (202) 554-0770
Omnium Infrastructure Solutions Special Inspections (202) 780-3090
Plus Engineering Special Inspections (703) 919-0008
Pons & Associates Special Inspections (703) 774-9186
Precise Engineering LLC Special Inspections (240) 447-9400
Professional Service Industries, Inc. Special Inspections (703) 560-7931
ROX Engineering, Inc. Special Inspections (703) 421-1999 X202
SC Stevenson Consulting, Inc. Special Inspections (804) 622-8630
Smislova Kehnemui & Associates Special Inspections (301) 881-8313
Soil and Land Use Technology, Inc. (SaLUT) Special Inspections (301) 595-3783
Schnabel Engineering Special Inspections (202) 677-4120
Soil Consultants Engineering Inc. Special Inspections (703) 366-3000
Somat Engineering Inc. Special Inspections (202) 778-2721
Specialized Engineering Special Inspections (301) 607-4180
Terracon Consultants Special Inspections (703) 730-4160
TerraTek Consultants Special Inspections (571) 308-3361 
The Robert Balter Company Special Inspections (410) 363-1555
Triad Engineering, LLC Special Inspections (703) 729-3456
Universal Engineering Sciences, Inc. Special Inspections (703) 654-5111/(571) 444-6090
WDP & Associates Special Inspections (703) 257-9280
     
Elevator Inspections Approved Disciplines Phone Numbers
Adonai Consultants, Inc. Elevator Inspections (202) 547-9500
American Elevator Inspection Services, Inc. (AEIS) Elevator Inspections (703) 550-9037
Arundel Inspection Services, LLC Elevator Inspections (410) 766-4600
ATIS Elevator Inspections, LLC Elevator Inspections (855) 755-2847
Bayline Lift Technologies, LLC Elevator Inspections (757) 583-8900
BOCA Group EAST LLC Elevator Inspections (212) 983-7010 x231
Central Elevator Inspector Elevator Inspections (540) 987-3111
Chief Upshaw's Elevator AKA PYU Elevator Inspections and Consulting Elevator Inspections (301) 498-3422
Dominion Elevator Inspection Services Elevator Inspections (703) 721-2950
EMCOR Government Services, Inc. Elevator Inspections (571) 403-8858
Liberty Elevator Experts, LLC Elevator Inspections (844) 542-3538
NEIS Elevator Inspection Service Elevator Inspections (800) 886-6347 or (703) 690-7980
Omni Elevator Inspection Services Elevator Inspections (202) 675-6308
Vertical Systems Analysis, Inc. (VSA) Elevator Inspections (212) 989-5525