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Single Family ResidenceResidential
$540,717$270 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $367,000 on Dec 17, 2018

671 FLAGG LN

WOODSTOCK, IL 60098
3
Beds
2
Baths
2,006 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.
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.
2018
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$541K
$517K low$564K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$367,000 · Dec 17, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,250 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$140,958 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,078
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$125,880
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$127,471
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$422,874

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.23 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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
CountyMCHENRY
Lot (acres)The size of the land the home sits on, from county records.0.65
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(7)

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.

E
Olson Elementary SchoolB+
Elementary · Grades 1–5 · 1.3 mi
M
Northwood Middle SchoolA-
Middle · Grades 6–8 · 1.5 mi
H
Woodstock North High SchoolA+
High · Grades 9–12 · 2.2 mi

District: Woodstock Community Unit School District 200

Neighborhood · ZIP 60098These 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.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.37,082
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.351 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,128
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,700
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

671 Flagg Ln 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.

  • Worth more than 87% of homes in Woodstock 60098
  • Costs more per square foot than 93% of homes in Woodstock 60098
  • Has a bigger lot than 79% of homes in McHenry County
  • Among the newest homes in McHenry County

What homes are worth in Woodstock 60098

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

This home
$159K$876K

This home is worth more than 87% of homes in Woodstock 60098.

How it measures up in Woodstock 60098

The dot is this home. The mark in the middle is the typical home in Woodstock 60098.

Estimated value$540,717
CheaperTypical $340,857Pricier

Pricier than 87% of homes nearby

Price per ft²$270
CheaperTypical $194Pricier

Pricier than 93% of homes nearby

Living area2,006 ft²
SmallerTypical 1,740 ft²Bigger

Bigger than 63% of homes nearby

Lot size0.65 ac
SmallerTypical 0.25 acBigger

Bigger than 69% of homes nearby

Year built2018
OlderTypical 1988Newer

Newer than 98% of homes nearby

How 671 Flagg Ln ranks against every home in each area.
MeasureThis homeWoodstock 60098McHenry County
Estimated valuepricier than$540,71787% of homes85% of homes
Price per ft²pricier than$27093% of homes89% of homes
Living areabigger than2,006 ft²63% of homes60% of homes
Lot sizebigger than0.65 ac69% of homes79% of homes
Year builtnewer than201898% of homesalmost all homes

About 671 Flagg Ln

How much is 671 Flagg Ln, Woodstock, IL worth?

The TopHap Estimate for 671 Flagg Ln, Woodstock, IL is $540,717 as of Sep 24, 2026. The likely range is $517,100 to $564,334. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 671 Flagg Ln, Woodstock, IL last sell?

671 Flagg Ln, Woodstock, IL last sold on Dec 17, 2018 for $367,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 671 Flagg Ln, Woodstock, IL?

671 Flagg Ln, Woodstock, IL has 3 bedrooms, 2 bathrooms, 2,006 square feet of living space and a 0.65-acre lot.

When was 671 Flagg Ln, Woodstock, IL built?

671 Flagg Ln, Woodstock, IL was built in 2018, making it 8 years old. The building has 1 story.

What schools serve 671 Flagg Ln, Woodstock, IL?

671 Flagg Ln, Woodstock, IL is assigned to Olson Elementary School (elementary), rated B+; Northwood Middle School (middle), rated A-; Woodstock North High School (high), rated A+. All sit in Woodstock Community Unit School District 200. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 671 Flagg Ln, Woodstock, IL compare to other homes in Woodstock 60098?

Among the 10,845 homes in Woodstock 60098, it is worth more than 87% of them ($540,717 against a typical $340,857), its price per square foot is higher than 93% of them ($270 against a typical $194), it is bigger than 63% of them (2,006 ft² against a typical 1,740 ft²), its lot is bigger than 69% of them (0.65 ac against a typical 0.25 ac) and it is newer than 98% of them (2018 against a typical 1988). Measured against all of McHenry County, it is worth more than 85% 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 671 Flagg Ln, Woodstock, IL?

The 2024 property tax bill for 671 Flagg Ln, Woodstock, IL was $12,250. The county assessed it at $140,958.

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