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Single Family ResidenceResidential
$416,045$205 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 48How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

621 N 18TH ST

BOISE, ID 83702
5
Beds
3
Baths
2,028 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$416K
$199K low$633K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,211 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$742,600 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$690,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$742,600

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.3 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Bi-Level
CountyADA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2004
Lot (acres)The size of the land the home sits on, from county records.0.11
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 60 ft²Patio · 80 ft²Porch · 140 ft²

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
North Junior High SchoolA
Middle · Grades 7–9 · 0.4 mi
H
Boise Senior High SchoolA-
High · Grades 9–12 · 0.6 mi
E
Lowell Elementary SchoolB-
Elementary · Grades PK–6 · 0.8 mi

District: Boise City Independent School District 1

Neighborhood · ZIP 83702These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.138
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.69

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.27,736
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.404 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,131
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$125,125
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.21 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.64%

Owner Tools

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

621 N 18th St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Costs less per square foot than 77% of homes in North End
  • Has a smaller lot than 87% of homes in Ada County
  • Among the oldest homes in Ada County

What homes are worth in Boise 83702

Each bar is how many homes fall in that price range. The marker is this home.

This home
$198K$1.6M

This home is worth more than 44% of homes in Boise 83702.

How it measures up in Boise 83702

The dot is this home. The mark in the middle is the typical home in Boise 83702.

Estimated value$416,045
CheaperTypical $441,393Pricier

Pricier than 44% of homes nearby

Price per ft²$205
CheaperTypical $249Pricier

Pricier than 29% of homes nearby

Living area2,028 ft²
SmallerTypical 1,896 ft²Bigger

Bigger than 55% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 25% of homes nearby

Year built1900
OlderTypical 1953Newer

Newer than 6% of homes nearby

How 621 N 18th St ranks against every home in each area.
MeasureThis homeNorth EndBoise 83702Ada County
Estimated valuepricier than$416,04549% of homes44% of homes62% of homes
Price per ft²pricier than$20523% of homes29% of homes56% of homes
Living areabigger than2,028 ft²62% of homes55% of homes55% of homes
Lot sizebigger than0.11 ac23% of homes25% of homes13% of homes
Year builtnewer than190011% of homes6% of homesalmost no homes

About 621 N 18th St

How much is 621 N 18th St, Boise, ID worth?

The TopHap Estimate for 621 N 18th St, Boise, ID is $416,045 as of Aug 30, 2026. The likely range is $198,644 to $633,446. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 621 N 18th St, Boise, ID last sell?

621 N 18th St, Boise, ID last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 621 N 18th St, Boise, ID?

621 N 18th St, Boise, ID has 5 bedrooms, 3 bathrooms, 2,028 square feet of living space and a 0.11-acre lot.

When was 621 N 18th St, Boise, ID built?

621 N 18th St, Boise, ID was built in 1900, making it 126 years old. It is a bi-level home. The building has 2 stories.

What schools serve 621 N 18th St, Boise, ID?

621 N 18th St, Boise, ID is assigned to North Junior High School (middle), rated A; Boise Senior High School (high), rated A-; Lowell Elementary School (elementary), rated B-. All sit in Boise City Independent School District 1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 621 N 18th St, Boise, ID compare to other homes in Boise 83702?

Among the 8,369 homes in Boise 83702, it is worth more than 44% of them ($416,045 against a typical $441,393), its price per square foot is higher than 29% of them ($205 against a typical $249), it is bigger than 55% of them (2,028 ft² against a typical 1,896 ft²), its lot is bigger than 25% of them (0.11 ac against a typical 0.14 ac) and it is newer than 6% of them (1900 against a typical 1953). Measured against all of Ada County, it is worth more than 62% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 621 N 18th St, Boise, ID?

The 2025 property tax bill for 621 N 18th St, Boise, ID was $5,211. The county assessed it at $742,600.

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