401 Decatur Street Northwest, Washington
technical data · neighborhood and transit
Quick answers
- Does 401 Decatur Street Northwest have open permits or code violations?
- DC Department of Buildings lists 11 permits, 5 not closed, and 0 violations.
- What is the 2026 conforming loan limit in District of Columbia?
- $1,249,125 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 2, moderate potential.
- What natural disasters is 401 Decatur Street Northwest at risk for?
- FEMA's National Risk Index rates the area very low overall, with elevated heat wave risk.
Permits and code violations
5 permits not closed out. Unfinished permits pass to the next owner.
- Supplemental Dec 2025Permit issued
- Construction Dec 2025Permit issued
Installation of a new, roof-mounted solar photovoltaic electric system sized at 9.24kw with 21 solar panels.
- Supplemental Nov 2025Permit issued
- Construction Nov 2025Permit issued
To install 10.35kw dc on roof of the building
- Supplemental Feb 2025Completed
- Supplemental Feb 2025Completed
- Supplemental Feb 2025Completed
- Construction Dec 2024Completed
Interior renovation of 2-story semi-detached with cellar
- Post card Aug 2024Permit issued
- Construction Feb 2023Completed
Single family dwelling: replace exterior stair
- Construction Jun 2022Completed
Single family dwelling: new garage door - rear yard
DC Department of Buildings
Safety and environment
FEMA natural hazard risk
Very Low
Highest for this area: heat wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
6 within 1,650 ft
Nearest: Anacostia Realty Llc, 5515 S Dakota Av Ne 5501 S Dakota Av Ne (700 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Toxic release facility
3,000 ft
Fort Totten Ready Mix Concrete. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
Radon potential
Moderate
Average indoor levels of 2 to 4 pCi/L. EPA still suggests testing ground-floor and basement units.
EPA and USGS Geologic Radon Potential Map
Nearest public schools
300 ft
Barnard ES (300 ft), E.L. Haynes PCS - HS (1,800 ft), E.L. Haynes PCS - ES (1,800 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
6.7 mi
Reagan National (DCA). Aircraft may be audible under approach paths.
FAA large-hub airports
Conforming loan limit 2026
$1,249,125
District of Columbia. Mortgages up to this amount qualify for Fannie Mae and Freddie Mac pricing. Above it, the loan is a jumbo with stricter terms.
FHFA Conforming Loan Limit Values, one-unit
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More on Decatur Street Northwest
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What's worth checking in person before deciding.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- This is a house, not an apartment. Check the lot boundaries, car access, and how water drains from the yard after rain, including whether the neighboring lot sits higher and could send water toward the property.
- Knock on a neighboring gate and ask about noise, pets, flooding, or other issues common in the area.
- Check the sewer connection (public network or septic tank) and the water source (public network or well), including pressure and water quality.
- Check the condition of the fence, yard, and sidewalk out front: who is responsible for upkeep, and whether there are any boundary disputes with neighbors.
- Ask to see the construction documents (permit, sign-off) and check for visible cracks on the facade or in the attic/basement.
- Check the roof, gutters, and downspouts for signs of leaks or recent repairs, especially if it has rained recently.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.