Permit Record

Alteration Commercial

1920 12th St NW 2, Washington, DC 20009

ClassificationAlteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Sandra Carpenter
Owner
Mahon, Nicholas
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
0274-2008
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
ALTERATION AND REPAIR
Geocode & dates
Coordinates
38.9162, -77.0283
Geocode confidence
95%
Geocode source
Not in source
Issued
May 12, 2021
Applied
Not in source
Work class
Residential
Description
Source description

Remove/Deconstruct the following: (8) Existing Wood Windows (1) Existing Wood Patio Door Existing Interior Trim, Casing and Sills for Full Frame Replacement of (2) Windows and (1) Door Existing Stop Trim as Needed for Pocket Replacement of (6) Windows. Install: (6) New Anderson E-Series Architectural Wood/Clad Double Hung Windows (2) New Anderson 100 Series Composite Triple Casement Windows (1) New Anderson 200 Series Fiberglass Door Install new interior and exterior casing at full frame replacement of (2) rear facing windows and (1) front facing door Furnish and Install New Stop Trim for Insert Replacement of (6) Front Facing Windows. install new lockset at new 3rd floor door

Status
Current status
expired
Source status
EXPIRED
Provenance
First seen (no changes since)
May 19, 2026 · 00:12 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

2 permits at this parcel (parcel 0274-2008) · Jun 26, 2012 – May 12, 2021

  1. May 12, 2021This permitAlteration Commercial · Expired
  2. Jun 26, 2012M1202156MEP Mechanical HVAC · Expired

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

Developer details
Permit #
B2106738
Canonical ID
243:B2106738
Source permit ID
B2106738
Browse Washington, DC permits in the Market Explorer →Pull this permit via /v1/permits →