Permit Record

Addition Residential

402 N St NW, Washington, DC 20001

ClassificationAddition
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Ian Williams; Ian Williams
Owner
Ian Williams
Architect
Not in source
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Units (residential)
Not in source
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
0513-0078
Climate zone (IECC)
4A
Roof area (est.)
Not derivable — no building-size signal for this permit
HVAC tonnage (est.)
Not derivable — no building-size signal for this permit
Building type
Not in source
Building subtype
ADDITION ALTERATION REPAIR
Geocode & dates
Coordinates
38.9071, -77.0164
Geocode confidence
95%
Geocode source
Not in source
Issued
Aug 18, 2020
Applied
Not in source
Work class
Residential
Description
Source description

Apply fire-retardant intumescent paint (30 mil) to cellar ceiling.

Status
Current status
expired
Source status
EXPIRED
Provenance
First seen (no changes since)
May 19, 2026 · 00:11 UTC
Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

12 permits at this parcel (parcel 0513-0078) · Jan 14, 2010 – Oct 26, 2021

  1. Oct 26, 2021E2200762MEP Electrical · Finaled
  2. May 14, 2021SOL2101529Solar PV · Issued
  3. May 5, 2021E2106569MEP Electrical · Issued
  4. Aug 18, 2020This permitAddition Residential · Expired
  5. May 9, 2019P1906120MEP Plumbing · Issued
  6. Mar 25, 2019B1906548Alteration Commercial · Finaled
  7. Feb 8, 2019M1901442MEP Mechanical HVAC · Finaled
  8. Feb 8, 2019P1903667MEP Plumbing · Finaled
  9. Jan 31, 2019B1902040Alteration Commercial · Finaled
  10. Jun 23, 2014B1408893Alteration Commercial · Issued
  11. Oct 1, 2012B1300028Alteration Commercial · Issued
  12. Jan 14, 2010B1002653Alteration Commercial · Expired

Full permit history at this parcel · as of Aug 11, 2026.

Developer details
Permit #
B2010775
Canonical ID
243:B2010775
Source permit ID
B2010775
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