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Last Updated: April 27, 2026 (updated DC DOB and Mont. County DPS Links)

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Washington D.C. DC Atlas Dept. of Buildings Permitting in the District DOB Permit Wizard ProjectDox Office of the Surveyor Survey Docs Dept. of the Environment 2013 SWM Guidebook SWM Guidebook, by chapter Water Quality Regulations Dept. of Transportation "d." Permit Applications Standards & Guidelines Green Infrastructure Standards 2017 Design & Engineering Manual d.TOPS (DOT on-line permitting system TOPS Permitting Information DDOT-UFD Street Tree Inventory Office of Zoning Zoning Regulations Zoning Handbook Summary of Zoning Districts DC Zoning Map DOB Zoning Resources Property Quest - find info on property by address DC Water Design Standards & Forms Check Application Status System Availability Fee Updates Lead Pipe Map

Montgomery County Department of Permitting Services Check Permit Status County Phone Numbers Land Dev. Division (with good links) MC GIS maps Zoning info (Setbacks, EBLs, etc.) Commercial Additions Fire Code Compliance MC Bill 26-05 - SW Drainage & Runoff Dept of Transportation Div. of Transportation Engineering Design Standards Storm Drain Design Criteria (2014) Traffic Control Plans Manual on Union Traffic Control Devices for Streets and Highways Montgomery Planning MNCPPC (Bi-County) Types of Development Applications Development Review Development Standards Zoning Text & Subdivision Regulation Amendments Environmental Planning Environmental Guidelines / Reports Trees - Technical Manual (1992) Finding an Approved FCP Montgomery County Zoning Ordinance Zoning Code Directory MC Atlas Development Finder Sign Posting Procedures Date Downloads to 200-scale dwg files

Prince George's County MNCPPC - PG Planning Dept. PG Atlas DPIE - Dept of Permitting, Inspections & Enforcement Site / Road Permits Site / Road Permits - Checklists

WSSC, SHA, DC WATER and OTHER WSSC e-permitting Development Services Group (DSG) DSG Phone Numbers Codes & Standards Standard Details Pipeline Design Manual Forms and Fees Maryland SHA Standards and Specifications Book of Standards (PDFs) Hotmix Asphalt Pavement Design Guide (Md. Asphalt Association, Inc.) SHA Permits DC Water Permits ProjectDox Plan Categories Standard Details and Forms Design and Construction Standards DCW Useful Links Other Useful links  MD SDAT Property Search MD Land Records.Net NRCS National Soils Map FEMA - Firm Maps NGS Coordinate Conversion and Transformation Tool (NCAT) Archived ADA - Chapter 6 Local Govt Best Practices Toolkit for Curb Ramps and Pedestrian Crossings Archived ADA info on Access Ramps Cad Tutor (tree blocks)