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Maryland State overlays

All 16 tracked preemption laws for Maryland.

Overview

All tracked preemption laws for Maryland. Click any law for its trigger predicate, preempted fields, and source citation.

Laws tracked
16
Preempted fields
36
Required city attrs
18
Last reviewed
2026-05-18
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Tracked laws

Maryland Land Use Article — Zoning & Planning Enabling Authority2 fields
Effective
2012-10-01
Authority
state · scope: state:MD
ID
MD_LAND_USE_ARTICLE_ENABLING
Open detail →
Maryland Historic District Enabling Authority (LU §8-201)2 fields
Effective
2012-10-01
Authority
state · scope: state:MD
ID
MD_HISTORIC_DISTRICT_ENABLING_LU_8_201
Open detail →
Maryland Military Installation Joint Land Use Studies (LU §22-301)2 fields
Effective
2008-10-01
Authority
state · scope: state:MD
ID
MD_MILITARY_INSTALLATION_JLUS_LU_22_301
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Atlantic Coastal Bays Critical Area — Worcester County Overlay2 fields
Effective
2002-10-01
Authority
state · scope: state:MD
ID
MD_ATLANTIC_COASTAL_BAYS_CRITICAL_AREA
Open detail →
Maryland Priority Funding Areas (PFA) — Smart Growth Act2 fields
Effective
1997-10-01
Authority
state · scope: state:MD
ID
MD_PRIORITY_FUNDING_AREAS_SMART_GROWTH
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Maryland Rural Legacy Program — Designated Rural Legacy Areas2 fields
Effective
1997-10-01
Authority
state · scope: state:MD
ID
MD_RURAL_LEGACY_PROGRAM
Open detail →
Maryland Forest Conservation Act (FCA)2 fields
Effective
1991-07-01
Authority
state · scope: state:MD
ID
MD_FOREST_CONSERVATION_ACT
Open detail →
Maryland Wetlands of Special State Concern (WSSC) & Nontidal Wetlands2 fields
Effective
1989-01-01
Authority
state · scope: state:MD
ID
MD_WETLANDS_SPECIAL_STATE_CONCERN
Open detail →
Chesapeake Bay Critical Area Program — IDA / LDA / RCA Overlay5 fields
Effective
1984-06-01
Authority
state · scope: state:MD
ID
MD_CHESAPEAKE_BAY_CRITICAL_AREA
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Maryland Transfer of Development Rights (TDR) — Enabling & MoCo/Calvert Programs2 fields
Effective
1980-10-01
Authority
state · scope: state:MD
ID
MD_TRANSFER_OF_DEVELOPMENT_RIGHTS
Open detail →
Maryland Agricultural Land Preservation Foundation (MALPF) Easement Districts2 fields
Effective
1977-07-01
Authority
state · scope: state:MD
ID
MD_AGRICULTURAL_LAND_PRESERVATION_MALPF
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Maryland Floodplain Management — NFIP Participation & State Standards3 fields
Effective
1976-01-01
Authority
state · scope: state:MD
ID
MD_FLOODPLAIN_MANAGEMENT_NFIP
Open detail →
Maryland Scenic and Wild Rivers System2 fields
Effective
1968-07-01
Authority
state · scope: state:MD
ID
MD_SCENIC_AND_WILD_RIVERS
Open detail →
Maryland Aviation — BWI Marshall Compatible Use Overlay & Airport Zoning2 fields
Effective
1958-07-01
Authority
state · scope: state:MD
ID
MD_AIRPORT_BWI_COMPATIBLE_USE
Open detail →
Maryland-National Capital Park & Planning Commission — Regional District (LU Titles 20-27)2 fields
Effective
1927-04-29
Authority
state · scope: state:MD
ID
MD_M_NCPPC_REGIONAL_DISTRICT_ACT
Open detail →
Federal Battlefield Buffers — Antietam, Monocacy, Harpers Ferry Vicinity2 fields
Effective
1890-08-30
Authority
federal · scope: state:MD
ID
MD_FEDERAL_BATTLEFIELD_BUFFER
Open detail →

Required city attributes

Required city attributes

The evaluator needs these city-level facts present to resolve whether a given law's predicate fires.

  • population
  • county_population
  • county_format
  • is_in_chesapeake_critical_area
  • is_in_atlantic_coastal_bays_critical_area
  • critical_area_classification
  • is_in_priority_funding_area
  • in_designated_scenic_river_segment
  • has_local_historic_district
  • has_local_afd_program
  • in_rural_legacy_area
  • in_tdr_sending_area
  • in_tdr_receiving_area
  • near_military_installation
  • near_public_airport
  • is_in_m_ncppc_regional_district
  • in_local_floodplain_jurisdiction
  • in_antietam_battlefield_buffer