501 Madison Street Northwest, Washington
technical data · neighborhood and transit
Quick answers
- Does 501 Madison Street Northwest have open permits or code violations?
- DC Department of Buildings lists 14 permits, 8 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 501 Madison 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
8 permits not closed out. Unfinished permits pass to the next owner.
- Construction Oct 2025Permit issued
Residential grid roof mounted interactive solar installation system ac size @ stc: 5.76 kw system dc size @ stc: 7.695 kw (19) ja solar jam54s31-405/mr solar modules (1) solaredge use5700h-usmnbl75 energy hub(240v) inverter rgm certified
- Supplemental Oct 2025Permit issued
- Post card Oct 2025Permit issued
- Post card Sep 2025Permit issued
- Post card Sep 2025Permit issued
- Post card Nov 2024Completed
- Supplemental Aug 2024Completed
- Construction Jul 2024Expired
Interior demo of hall bathroom replace in kind all fixtures and tub install insulation and new tile walls and floors
- Construction Jun 2024Completed
Remove & install 4 windows-like sizes. no structural changes.
- Supplemental Nov 2023Permit issued
Electrical trade permit
- Construction Nov 2023Permit issued
Roof top solar installation 40 400w panels
- Construction Jul 2022Completed
Installing 14 asphalt roof mounted solar panels -5.670 kw
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
5 within 1,650 ft
Nearest: Department Of General Services, 324 Kennedy St Nw (1,200 ft), open. 1 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Toxic release facility
4,400 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
1,650 ft
Paul PCS - MS (1,650 ft), Paul PCS - International HS (1,650 ft), Capital City PCS - Lower School (2,350 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
7.4 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 Madison Street Northwest
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What's worth checking in person before deciding.
- 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.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Check the sewer connection (public network or septic tank) and the water source (public network or well), including pressure and water quality.
- Check the roof, gutters, and downspouts for signs of leaks or recent repairs, especially if it has rained recently.
- Check exactly where you'd park: a spot in the yard or garage, or street parking, and how crowded the street gets in the evening.
- Ask what heating system is in place (own boiler, wood, gas) and request the last winter month's bills.
- Knock on a neighboring gate and ask about noise, pets, flooding, or other issues common in the area.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.