Zoning › State overlays › District of Columbia

District of Columbia State overlays

All 12 tracked preemption laws for District of Columbia.

Overview

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

Laws tracked
12
Preempted fields
34
Required city attrs
6
Last reviewed
2026-05-20
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Tracked laws

NCPC Submission Guidelines — tightened federal review staging (in force 2026-01-08)2 fields
Effective
2026-01-08
Authority
federal · scope: state:DC
ID
DC_NCPC_SUBMISSION_GUIDELINES_2026
Open detail →
New York Avenue (NYE) text/map amendments — fixed 8% IZ set-aside2 fields
Effective
2024-09-12
Authority
district · scope: state:DC
ID
DC_NYE_NEW_YORK_AVENUE_AMENDMENTS_2024
Open detail →
Comprehensive Plan Amendment Act of 2021 — District Elements + NCPC Federal Elements3 fields
Effective
2021-08-21
Authority
hybrid · scope: state:DC
ID
DC_COMP_PLAN_CPAA_2021
Open detail →
DC Inclusionary Zoning Plus — deeper affordability overlay2 fields
Effective
2019-01-01
Authority
district · scope: state:DC
ID
DC_IZ_PLUS_OVERLAY_2019
Open detail →
ZR 2016 — Zoning Regulations of 2016 (11 DCMR)3 fields
Effective
2016-09-06
Authority
district · scope: state:DC
ID
DC_ZR_2016_ZONING_REGULATIONS
Open detail →
DC Inclusionary Zoning — mandatory citywide IZ (ZR 2016 Subtitle C Ch. 10)5 fields
Effective
2006-03-14
Authority
district · scope: state:DC
ID
DC_INCLUSIONARY_ZONING_2006
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DC Home Rule Act of 1973 — Congressional review & §602(a) reserved matters3 fields
Effective
1973-12-24
Authority
federal · scope: state:DC
ID
DC_HOME_RULE_ACT_1973
Open detail →
NCPC — federal review of DC projects affecting federal interest3 fields
Effective
1952-07-19
Authority
federal · scope: state:DC
ID
DC_NCPC_NATIONAL_CAPITAL_PLANNING_ACT_1952
Open detail →
DC Zoning Enabling Act — Zoning Commission jurisdiction and federal-appointee structure3 fields
Effective
1938-06-20
Authority
hybrid · scope: state:DC
ID
DC_ZONING_COMMISSION_ENABLING_ACT
Open detail →
Height of Buildings Act of 1910 — federal citywide height ceiling5 fields
Effective
1910-06-01
Authority
federal · scope: state:DC
ID
DC_HEIGHT_ACT_1910
Open detail →
RA-1 Text Amendment — missing-middle expansion in lowest-density apartment zone (PENDING)1 field
Effective
—
Authority
district · scope: state:DC
ID
DC_RA1_TEXT_AMENDMENT_PENDING_2026
Open detail →
DC 2050 — Comprehensive Plan full rewrite (PENDING; Council vote target 2027)2 fields
Effective
—
Authority
hybrid · scope: state:DC
ID
DC_2050_COMP_PLAN_REWRITE_PENDING
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.

  • is_district_of_columbia
  • street_classification
  • ncpc_jurisdiction_flag
  • iz_zone_applicable
  • iz_plus_overlay
  • in_nye_zone