All permits

4420 18TH ST NW

WASHINGTON, DC 20011 · DC — Ward 4

Permit activity

May 2026 → Jun 2026
  1. Building permit issuedMay 28
  2. Building permit issuedJun 1
DC-RW2600047
PERMIT ISSUED

Building permitretaining wall

Retaining Wall DescriptionConstruction and replacement of reinforced CMU retaining walls in the rear yard to support existing grade conditions and revised patio layouts. Wall heights vary by location, with a maximum height of approximately 5.5 feet. Retaining walls are exterior only and do not impact the existing building footprint or primary structural systems.

Applicant: HAYER, RUSSELL · Owner: CAMPBELL, JACK A

Issued Jun 1, 2026
DC-B2602720
PERMIT ISSUED

Building permitalteration and repair

Improvements to existing rear yard patios, including replacement and reconfiguration of patio surfaces, repositioning of steps, and associated reinforced CMU retaining walls. Work is limited to the rear yard and exterior site improvements only. No changes are proposed to the existing building footprint or primary structural systems. Steps Description: Reconfiguration and replacement of existing exterior rear yard steps, including removal of existing steps as required and construction of new cast-in-place concrete steps in generally the same location, adjusted to coordinate with the updated patio layout. Steps are exterior only and do not impact the existing building structure. Retaining Wall Description: Construction and replacement of reinforced CMU retaining walls in the rear yard to support existing grade conditions and revised patio layouts. Wall heights vary by location, with a maximum height of approximately 5.5 feet. Retaining walls are exterior only and do not impact the existing building footprint or primary structural systems.

Applicant: HAYER, RUSSELL · Owner: CAMPBELL, JACK A

Issued May 28, 2026

Property record

SSL 2642 0068
Built
1948 · remodeled 2020
Building area
2,523 sq ft
Lot
9,394 sq ft
Rooms
8 rooms · 4 bed · 3.1 bath
Stories
2
Grade
Good Quality
Condition
Good
Style
2 Story
Assessed
$1,381,070
Land / improvements
$682,760 / $698,310
Last sale
$1,070,000 · Jan 16, 2019
Units
1

Published by the District as assessment data, separately from the permit record above, and current as of the District’s own assessment cycle rather than today. An assessment can lag construction by a cycle, so a property with a recently issued permit may still be assessed as it was before the work. Owner details are published by the jurisdiction but are deliberately not shown here.

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These are the permits published by the jurisdictions listed above. A project usually depends on approvals from other agencies that publish nothing machine-readable — a forest conservation exemption, a well completion report, a sediment control or grading plan, a utility connection, a homeowners’ association sign-off. Their absence here is not evidence they were not required, and the gaps between the dates above are usually where they happened. Rows labelled “Issued” are ISSUED permits — Washington DC publishes an issue date and no project valuation at all. Records are grouped by normalised address text, so the same property may also appear upstream under a different spelling. Verify scope, dates, and contractor information with the issuing jurisdiction before bidding, quoting, or performing work.

DC building
current to Sep 21, 2026
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