Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$205,273$160 / 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 95How 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
Last sold for $150,000 on Mar 18, 2022

605 ARCH ST

OTTAWA, IL 61350
0
Baths
1,284 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$205K
$195K low$215K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$150,000 · Mar 18, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,224 (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.$58,812 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,587
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$51,225
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$53,341
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$176,436

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
13
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
73
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
67
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
28
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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 Residential
CountyLASALLE
Lot (acres)The size of the land the home sits on, from county records.0.18
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Shepherd Middle SchoolC-
Middle · Grades 7–8 · 0.4 mi
E
McKinley Elementary SchoolA-
Elementary · Grades KG–4 · 0.4 mi
H
Ottawa Township High SchoolD+
High · Grades 9–12 · 1.1 mi

District: Ottawa Elementary School District 141

Neighborhood · ZIP 61350These 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.114
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.23,673
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.158 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,547
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$84,853
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.55%

Owner Tools

Do you own this home?
Claim this home

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

605 Arch 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 more per square foot than 72% of homes in LaSalle County

What homes are worth in Ottawa 61350

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

This home
$74K$539K

This home is worth more than 54% of homes in Ottawa 61350.

How it measures up in Ottawa 61350

The dot is this home. The mark in the middle is the typical home in Ottawa 61350.

Estimated value$205,273
CheaperTypical $195,227Pricier

Pricier than 54% of homes nearby

Price per ft²$160
CheaperTypical $145Pricier

Pricier than 63% of homes nearby

Living area1,284 ft²
SmallerTypical 1,400 ft²Bigger

Bigger than 42% of homes nearby

Lot size0.18 ac
SmallerTypical 0.19 acBigger

Bigger than 46% of homes nearby

Year built1950
OlderTypical 1953Newer

Newer than 47% of homes nearby

How 605 Arch St ranks against every home in each area.
MeasureThis homeOttawa 61350LaSalle County
Estimated valuepricier than$205,27354% of homes61% of homes
Price per ft²pricier than$16063% of homes72% of homes
Living areabigger than1,284 ft²42% of homes41% of homes
Lot sizebigger than0.18 ac46% of homes38% of homes
Year builtnewer than195047% of homes48% of homes

About 605 Arch St

How much is 605 Arch St, Ottawa, IL worth?

The TopHap Estimate for 605 Arch St, Ottawa, IL is $205,273 as of Aug 30, 2026. The likely range is $195,133 to $215,413. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 605 Arch St, Ottawa, IL last sell?

605 Arch St, Ottawa, IL last sold on Mar 18, 2022 for $150,000, according to the county's recorded deed.

How big is 605 Arch St, Ottawa, IL?

605 Arch St, Ottawa, IL has 1,284 square feet of living space and a 0.18-acre lot.

When was 605 Arch St, Ottawa, IL built?

605 Arch St, Ottawa, IL was built in 1950, making it 76 years old. The building has 1 story.

What schools serve 605 Arch St, Ottawa, IL?

605 Arch St, Ottawa, IL is assigned to Shepherd Middle School (middle), rated C-; McKinley Elementary School (elementary), rated A-; Ottawa Township High School (high), rated D+. All sit in Ottawa Elementary School District 141. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 605 Arch St, Ottawa, IL compare to other homes in Ottawa 61350?

Among the 8,886 homes in Ottawa 61350, it is worth more than 54% of them ($205,273 against a typical $195,227), its price per square foot is higher than 63% of them ($160 against a typical $145), it is bigger than 42% of them (1,284 ft² against a typical 1,400 ft²), its lot is bigger than 46% of them (0.18 ac against a typical 0.19 ac) and it is newer than 47% of them (1950 against a typical 1953). Measured against all of LaSalle County, it is worth more than 61% 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 605 Arch St, Ottawa, IL?

The 2025 property tax bill for 605 Arch St, Ottawa, IL was $5,224. The county assessed it at $58,812.

More homes on Arch St

Closest homes

More homes in Ottawa 61350

Assigned schools

Explore the area

See this home in context

Open 605 Arch St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map