Permit Record

Residential

4031 20th St NE, Washington, DC 20018

ClassificationSUPPLEMENTAL - BOILER
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
George Donald Bosse
Owner
Nena W Arroyo
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
4229-0029
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
BOILER
Geocode & dates
Coordinates
38.9393, -76.9760
Geocode confidence
95%
Geocode source
Not in source
Issued
Sep 20, 2012
Applied
Not in source
Work class
Residential
Status
Current status
expired
Source status
EXPIRED
Provenance
First seen (no changes since)
May 19, 2026 · 00:02 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

6 permits at this parcel (parcel 4229-0029) · Apr 27, 2012 – Feb 23, 2026

  1. Feb 23, 2026PP2601714Other · Issued
  2. Oct 15, 2012E1300378MEP Electrical · Expired
  3. Oct 5, 2012E1300198MEP Electrical · Issued
  4. Sep 25, 2012M1203080MEP Mechanical HVAC · Expired
  5. Sep 20, 2012This permitOther · Expired
  6. Apr 27, 2012E87412283MEP Electrical · Issued

Full permit history at this parcel · as of Aug 5, 2026.

Developer details
Permit #
FB1200123
Canonical ID
243:FB1200123
Source permit ID
FB1200123
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