400 6th Street Southwest, Washington
technical data · neighborhood and transit
Quick answers
- Does 400 6th Street Southwest have open permits or code violations?
- DC Department of Buildings lists 4 permits, 4 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 400 6th Street Southwest at risk for?
- FEMA's National Risk Index rates the area relatively high overall, with elevated earthquake and hurricane risk.
Permits and code violations
4 permits not closed out. Unfinished permits pass to the next owner.
- Supplemental Oct 2024Expired
- Supplemental Jun 2024Permit issued
- Supplemental Jun 2024Permit issued
- Construction Feb 2024Permit issued
Interior renovation to 1st floor office space. partitions, furniture, finishes, mechanical, electrical and life safety. 1926 square feet. 35 occupants. csa workroom 01.4.
DC Department of Buildings
Safety and environment
FEMA natural hazard risk
Relatively High
Highest for this area: earthquake, hurricane, tornado, coastal flooding, inland flooding, strong wind, hail, heat wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Superfund site
1.8 mi
Washington Navy Yard (NPL Site). Check groundwater and vapor reports on the EPA site page.
EPA National Priorities List
Leaking fuel tanks
10 within 1,650 ft
Nearest: Robert M. Wolpe, 400 6th St Sw (50 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
High-voltage line
350 ft
138 kV line run by POTOMAC ELECTRIC POWER CO.
HIFLD transmission lines
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
50 ft
AppleTree Early Learning Center PCS - Southwest (50 ft), Washington Global PCS (150 ft), Richard Wright PCS for Journalism and Media Arts (200 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
2.4 mi
Reagan National (DCA). Homes this close can sit inside the 65 dB DNL noise contour. Visit at peak hours and check the airport's noise map.
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 6th Street Southwest
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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.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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