3670 East Marginal Way South, Seattle
technical data · neighborhood and transit
Quick answers
- Does 3670 East Marginal Way South have open permits or code violations?
- Seattle Department of Construction and Inspections lists 8 permits, all closed, and 4 violations.
- What is the 2026 conforming loan limit in King County?
- $1,063,750 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 3, low potential.
- What natural disasters is 3670 East Marginal Way South at risk for?
- FEMA's National Risk Index rates the area very high overall, with elevated earthquake and inland flooding risk.
Permits and code violations
Every permit on file is closed out. No open violations.
- Addition/alteration Jun 2021Completed
Construct minor alterations to telecommunications facility (verizon) at existing monopole tower & ground facility on site of existing commercial structure per plan
- Addition/alteration Jan 2018Completed
Replace existing antennas on existing monopole and associated equipment for existing minor telecommunications utility per plans.
- Addition/alteration Feb 2015Completed
Construct new minor communication utility monopole and new equipment building per plans.
- Addition/alteration Aug 2008Completed
Install 27-foot steel high pile racking for commercial building per plan.
- New Apr 2008Completed
Phase two of two: construct new tilt-up restaurant supply sales and warehouse building with accessory offices and surface parking occupy per plans (demolition of 5 industrial buildings under separate permits). grading excavation drainage and construction of foundation under phase one.
- New Jan 2008Completed
Phase one of two - grading excavation installation of geo-piers and construction of foundation for new wholesale showroom structure - no occupancy this permit - all per plans and mup 3004624 (including demolition of 5 industrial buildings under separate permits).
- Violation Oct 2007Completed
Demolition of 5 industrial building per mup 3004624.
- Violation Oct 2006Completed
Demolish existing 500 square foot storage structure per stfi
Seattle Department of Construction and Inspections
Safety and environment
FEMA natural hazard risk
Very High
Highest for this area: earthquake, inland flooding. These drive insurance cost here.
FEMA National Risk Index, census tract
Nearest active fault
2,150 ft
Seattle fault zone, slip rate between 0.2 and 1.0 mm/yr. Ask about seismic retrofit and earthquake insurance.
USGS Quaternary Fault Database
Quakes M4.5+ since 1970
6 within 30 mi
Every recorded earthquake of magnitude 4.5 or stronger within 30 miles.
USGS earthquake catalog
Superfund site
5,200 ft
Harbor Island (Lead) (NPL Site). Check groundwater and vapor reports on the EPA site page.
EPA National Priorities List
Leaking fuel tanks
5 within 1,650 ft
Nearest: Discount Office Furniture, 3825 1st Ave S (850 ft), open. 5 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
900 ft
Irish Foundry and 4 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
550 ft
Ash Grove Cement Co and 18 more within a mile. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
Radon potential
Low
Geology here keeps indoor radon low on average.
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
4,650 ft
Interagency Programs (4,650 ft), Private School Services (4,650 ft), Seattle Skills Center (4,650 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
8.3 mi
Seattle-Tacoma (SEA). Aircraft may be audible under approach paths.
FAA large-hub airports
Conforming loan limit 2026
$1,063,750
King County. 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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Who lives and works in Seattle
Cloud, aerospace and one of the highest engineering wage bases in the country
Seattle is a two-industry city that pays well. Cloud and aerospace set salaries, the downtown core is dense with towers, and the residential neighborhoods around it stay low rise and green.
- $116,068
- median household income
- 20.9%
- residents aged 25 to 34
- 46%
- households that own their home
What pays the bills
- Cloud and software
- Aerospace
- Retail headquarters
- Healthcare
- Maritime
Who anchors the economy
Amazon · Microsoft · Boeing · Starbucks · University of Washington
The market is shaped around
- Engineers and product staff
- Dual-income couples
- Owners in low-rise neighborhoods
More on East Marginal Way South
All addressesViewing recommendations
What's worth checking in person before deciding.
- The building has commercial space on the ground floor. Ask about their hours, check where the ventilation or refrigeration units are, and what time deliveries happen in the morning.
- 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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- 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.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.