3646 Alton Place Northwest, Washington
technical data · neighborhood and transit
Quick answers
- Does 3646 Alton Place Northwest have open permits or code violations?
- DC Department of Buildings lists 10 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 1, the highest potential. Test for radon before you buy.
- What natural disasters is 3646 Alton Place Northwest at risk for?
- FEMA's National Risk Index rates the area relatively low overall, with elevated heat wave and winter weather risk.
Permits and code violations
5 permits not closed out. Unfinished permits pass to the next owner.
- Post card Aug 2026Permit issued
- Supplemental Nov 2025Completed
Plumbing trade permit
- Supplemental Sep 2024Completed
Mechanical trade permit
- Supplemental May 2024Permit issued
- Supplemental Apr 2024Permit issued
- Construction Apr 2024Permit issued
Second floor bathroom and laundry remodel.
- Supplemental Jan 2024Completed
Plumbing trade permit
- Supplemental Dec 2023Expired
- Supplemental Dec 2023Completed
Mechanical trade permit
- Supplemental Oct 2023Completed
Mechanical trade permit
DC Department of Buildings
Safety and environment
FEMA natural hazard risk
Relatively Low
Highest for this area: heat wave, winter weather. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
1 within 1,650 ft
Nearest: Connecticut House Assoc Ltd Part, 4500 Connecticut Av Nw (1,600 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
2,450 ft
4025 Chesapeake Street Property. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
High-voltage line
500 ft
138 kV line run by POTOMAC ELECTRIC POWER CO.
HIFLD transmission lines
Radon potential
High
Average indoor levels here can exceed 4 pCi/L, EPA's action level. A $15 test kit settles it before you buy.
EPA and USGS Geologic Radon Potential Map
Wildfire risk
Very Low
Wildfire risk is low enough that standard home insurance usually covers it.
FEMA National Risk Index
Nearest public schools
2,050 ft
Jackson-Reed HS (2,050 ft), Murch ES (2,150 ft), Hearst ES (2,250 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
6.8 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 Alton Place Northwest
All addressesViewing recommendations
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.
- Semi-detached or row house: the shared wall matters. Listen from the room adjoining the neighbor's side and ask whether any structural work has been done there.
- 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.
- Ask what heating system is in place (own boiler, wood, gas) and request the last winter month's bills.
- 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 to see the construction documents (permit, sign-off) and check for visible cracks on the facade or in the attic/basement.
- 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.