1We estimate it's worth about $1.34M, likely between $1.14M and $1.69M.
21 permit on file (most recent: addition and alteration, 2010). Make sure the house matches what was approved.
3Zoning allows up to 2 ADUs (a backyard cottage or in-home unit); whether one fits this lot still needs Seattle's confirmation, because the lot is already well covered by buildings.
Confirmed from public records
Address and parcel, zoning, lot size, property taxes, searched permit records, flood zone, sale history, bedrooms, bathrooms, home size, year built, stories, recorded nearby sales
Estimated
Market value, typical area rent (HUD benchmark)
Not known yet
Required distances from property lines, exact house footprint
What we found
The things most people don't learn about a property until it's too late. Each one names where it came from.
Opportunity
Zoning allows up to 2 accessory dwelling units (ADUs) here
The NR3 zone in Seattle permits ADUs. This lot is above the 3,200 sq ft minimum a detached ADU needs here. The lot is below the zone's 5,000 sq ft minimum lot size, which limits how small a newly created lot may be (splitting the land), not whether an ADU is allowed. A backyard cottage or converted garage can add rental income or space for family. Size limits, required distances from property lines (setbacks) and parking rules still apply and should be confirmed before design.
Source: Seattle GIS / SDCI Zoning, WA State Zoning Atlas, Seattle SDCI Tip 116B, King County GIS / Assessor
Check this
The lot already has 2 buildings on it
Seattle Building Outlines 2023 show the house and a 350 sq ft detached garage (county records). The zone's lot-coverage limit we have on file works out to about 1,260 sq ft for this lot, so room for anything new may be very limited. Outlines can include decks and overhangs, and cities count coverage in different ways. A survey would settle it.
Source: Seattle Building Outlines 2023, Seattle GIS / SDCI Zoning
Good to know
Last sold in 2010, with major permitted work the same year
It sold for $472,500 in June 2010. A $100,000 permit (addition and alteration) is on record from September 2010. If the house today has more than the permits cover, ask about it.
Source: Sale records, City of Seattle SDCI
What you can build
Each project once, with a plain answer. “Allowed” means the zoning permits it. It does not mean it fits on this lot yet.
Remodel inside
Kitchens, baths, layout changes
Requires investigation
Confirm the scope with the permitting authority. Structural, electrical and plumbing work typically need permits.
Backyard cottage or in-home unit (ADU)
Up to 2 allowed by zoning
Allowed, fit not confirmed
Converting existing space (a basement or garage) may be easier than a new building, because the lot is already well covered. Size limits and where it can go on the lot still need checking with the city or county.
Addition
Up to 30 ft tall
Allowed, fit not confirmed
Going up may work better than going out, because buildings already cover much of what the lot allows.
Tear down and rebuild
One new house
Requires investigation
Same height and coverage limits apply. First confirm how the rules treat lots under the zone minimum.
More than one home (duplex and up)
Beyond ADUs
Not known
Our zoning data shows one home per lot, but Washington's 2023 middle-housing law requires many cities to allow more. Ask Seattle's permit office (SDCI) what applies now.
Split into two lots
Subdivision
Unlikely
The lot is already below the 5,000 sq ft minimum.
How much of the lot can be covered by buildingsCompared with what's already there
Whole lot
3,600 sq ft
Already built (2 structures)
~2,000 sq ft
Coverage limit (35%)
1,260 sq ft
Building outlines are measured from aerial photos and can include decks or roof overhangs. Cities may count coverage differently on small lots. Required distances from property lines aren't known yet, so the real space left is likely smaller.
Which permits would my project need?
Required Permits Engine
What permits will your project need?
Select a project type to see the exact permit package required for this property in Seattle. It combines Washington State rules with local requirements.
Select a project type above to see required permits
What it's worth
Our estimate starts from the county's appraisal and adjusts it using recent sales in this neighborhood, the county price trend, and similar homes that sold nearby. It's a starting point, not an appraisal.
Our estimate
$1,340,708
Likely between $1,141,000 and $1,689,000
How accurate is this? We tested this method on 7,644 King County home sales (Apr–Oct 2026) it hadn't seen. Half of estimates were within 7.8% of the sale price, and 6 in 10 within 10%. The likely range held the real price about 84.3% of the time.
Where the estimate sits
Estimate $1.34M
County $1.31M
$1.1M
$1.66M
Our likely rangePrices of 8 nearby similar homesCounty assessed value
County assessed value
$1,305,000
Land $736,000 · Building $569,000
Price per sq ft
$745
About the same as the 8 sales we compared ($727)
Neighborhood sales, last 12 months
$2,000,000
All 79 sales in the neighborhood · $745/sq ft · up 20.5% vs the year before
Price history
Sales and county values from King County Assessor records. The last point is our estimate.
Sold
County assessed value
Our estimate (today) and range
Sale history
June 1, 2010
Sold · $472,500
Statutory Warranty Deed
Change since previous sale: +$322,500 (+215%)
September 1, 1996
Sold · $150,000
Statutory Warranty Deed
Date
What happened
Price
Change since previous sale
June 1, 2010
SoldStatutory Warranty Deed
$472,500
+$322,500 (+215%)
September 1, 1996
SoldStatutory Warranty Deed
$150,000
See the 8 sales we compared
2702 4TH AVE W
Sold May 2026 · 2,090 sq ft · 0.5 mi
$1,505,700 · $720 per sq ft
1722 4TH AVE N
Sold Sep 2025 · 1,770 sq ft · 0.7 mi
$1,300,000 · $734 per sq ft
1215 W ARMOUR ST
Sold Apr 2026 · 2,000 sq ft · 0.7 mi
$1,095,000 · $548 per sq ft
1212 3RD AVE N
Sold Aug 2025 · 2,110 sq ft · 0.8 mi
$1,660,000 · $787 per sq ft
1133 BIGELOW AVE N
Sold May 2025 · 1,980 sq ft · 0.8 mi
$1,559,000 · $787 per sq ft
839 W ETRURIA ST
Sold Mar 2026 · 1,910 sq ft · 0.8 mi
$1,523,000 · $797 per sq ft
3310 9TH AVE W
Sold Sep 2026 · 2,230 sq ft · 0.9 mi
$1,500,000 · $673 per sq ft
3437 13TH AVE W
Sold Jun 2026 · 2,070 sq ft · 1.1 mi
$1,325,000 · $640 per sq ft
Address
Sold
Distance
Size
Price
Per sq ft
2702 4TH AVE W
May 2026
0.5 mi
2,090 sq ft
$1,505,700
$720
1722 4TH AVE N
Sep 2025
0.7 mi
1,770 sq ft
$1,300,000
$734
1215 W ARMOUR ST
Apr 2026
0.7 mi
2,000 sq ft
$1,095,000
$548
1212 3RD AVE N
Aug 2025
0.8 mi
2,110 sq ft
$1,660,000
$787
1133 BIGELOW AVE N
May 2025
0.8 mi
1,980 sq ft
$1,559,000
$787
839 W ETRURIA ST
Mar 2026
0.8 mi
1,910 sq ft
$1,523,000
$797
3310 9TH AVE W
Sep 2026
0.9 mi
2,230 sq ft
$1,500,000
$673
3437 13TH AVE W
Jun 2026
1.1 mi
2,070 sq ft
$1,325,000
$640
Actual sale prices recorded by the King County Assessor.
Things to watch
Missing information isn't a problem with the property. It's just something to check.
Check
Built in 1955
Homes this age often need work on wiring, plumbing or the foundation, and paint may contain lead. Get an inspection before buying or remodeling.
Check
County notes: Traffic noise
King County's assessor records note this for the parcel. It can affect how the home feels to live in and its value.
Clear
Property taxes are paid up
2026 taxes are $13,553. The first half is paid. The second half, $6,777, is due November 2. Nothing is past due as of October 22.
This is not a lien search. Only a title report shows mortgages, contractor liens and judgments.
Clear
No mapped FEMA special flood hazard identified
FEMA Zone X. This screening does not rule out flooding. Confirm current mapping and insurance requirements with your lender and insurer.
What an experienced eye would check
Standing checks a Washington agent, inspector or appraiser would run on this property. Each one names the public record behind it, and says what to check, not what is wrong.
Check
Lead paint
Built before 1978, so paint may contain lead. Sellers must disclose known lead paint, and buyers can take 10 days to test.
What to do: Get a lead test before sanding or remodeling.
Older Puget Sound homes often heated with oil, and many still have a buried tank. A furnace running on gas or electricity now does not prove there never was one. A leaking tank can be costly to clean up.
What to do: Ask for a tank sweep (a few hundred dollars) before buying.
Materials in homes this age can contain asbestos. Washington requires a good-faith asbestos survey before renovation or demolition in every county — RCW 49.26.013, enforced by the Department of Labor & Industries.
What to do: Budget for an asbestos survey before permits.
Records returned by the searched source, including applications and permits. Missing entries may reflect incomplete coverage, not unpermitted work. Confirm approval and inspection status with the permitting authority.
2010
September
Addition and alteration
Final inspection recorded
Construct addition and alteration to existing single family residence. per plans.
Valued at $100,000 · Permit #6253005-CN
1 permit found in the searched records, none marked open or in review. No ADU permit identified in these records. Source: City of Seattle SDCI + King County Assessor permit records, checked October 20, 2026.
Your next steps
In order. The free ones first, so you don't pay for work that a phone call could rule out.
1
Compare the house to its permits
Anything added that isn't covered by a permit may have been done without one.
Free
2
Ask Seattle's permit office (SDCI) five questions
Does an ADU fit on a 3,600 sq ft lot? What are the required distances from the property lines? How is lot coverage counted here? Does being under the 5,000 sq ft minimum lot size affect splitting the lot or rebuilding? How many homes are allowed on this lot now?
Free
3
Get a home inspection
A 1955 house can hide wiring, plumbing or foundation issues.
Paid
4
Order a title report
The only way to see mortgages, liens and judgments on the property.
Paid
Bring parcel number 2397101370 when you call the city.
Public records can be out of date. Confirm anything you'll act on with the city or county. Permit Pathfinder is a research tool, not a permit approval, appraisal or title search.