Oak Brook, IL · Updated Oct 2026

What a Oak Brook home costs each year

Property tax, water, trash and energy from public rates. Look up your address to make it yours, and see how to pay less.

Suggestions as you type come from Google; the lookup uses free public map services to find who serves it. Not stored unless you save your house.

Example · a Oak Brook house

$13,848a year · $1,154 a month

Starts at $301,067 of value before exemptions. Typical use.

Property tax$10,532
3.594% of $301,067, less $8,000 general homestead exemption
Electricity and gas$1,844
609 kWh a month $1,350 · 31 therms $493
Water and sewer$1,172
4,000 gallons a month on Village of Oak Brook: water $67, sewer $31 a month
Trash$300
Weekly curbside refuse and recycling (Option A, 1x week curb), $25 a month
Home insuranceNot included
We don't have a typical premium for this city yet. Add yours with Adjust.

A typical Oak Brook house costs about $13,800 a year: $10,530 property tax and charges, $1,170 water and sewer, $300 trash, $1,840 electricity and gas; home insurance is not included (no typical premium yet). Estimated from public rates, not anyone's actual bill.

Rates checked Oct 31, 2026. Insurance: what you enter, or a typical premium until you do. Sources are listed at the bottom.

Ways to pay less

Nothing here applies to every house automatically. These are worth checking:

Seniors 65+: senior homestead exemption
The Senior Homestead Exemption provides for a maximum of an $8,000 reduction from the equalized assessed valuation.
How: Eligible senior taxpayers must complete an application and supply proof of age and property ownership.
General homestead exemption
Beginning 2023 payable 2024, the maximum deduction increases to $8,000 in assessed value.
How: In most cases, the Township Assessor will automatically grant the exemption on behalf of the taxpayer without requiring a formal application.

Who serves this house

Water: Village of Oak Brook; Residential rate for 2026: $14.22 per 1,000 gallons; fixed monthly charge $10.00. Billed bimonthly.
Property tax: 3.59% of value; 2025 tax year (payable 2026), DuPage County, tax code 6143
Garbage: Flood Brothers Disposal; Flood Brothers provides refuse, recycling, and yard waste collection for residents of Oak Brook, IL.
Sewer: Flagg Creek Water Reclamation District; Flagg Creek provides sanitary sewer service for all or parts of 11 communities, including Oak Brook.
Schools: Grade School District 53 and High School District 86; Tax code 6143 levies for Grade School District 53 and High School District 86.

Pay or manage your bills

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How these numbers are made

Property tax uses DuPage County 2025 final rates for tax code 6143 (York Township, Oak Brook Park District, Grade School District 53, High School District 86; total 3.5937 per $100 of equalized assessed value). The booklet lists the Village of Oak Brook with no rate for this code. Part of the village is in Cook County and other codes differ.
The starting value is one third of the Data USA median market value ($903,200 / 3), because Illinois taxes equalized assessed value (about one third of market value). The $8,000 general homestead exemption comes off that value.
Water: Village residential rate of $14.22 per 1,000 gallons and a $10.00 monthly fixed charge for 2026; the Village is a DuPage Water Commission customer. Typical use is the midpoint of the Village's stated 3,500 to 4,500 gallons a month. A small part of Oak Brook is served by Aqua Illinois and is not modelled.
Sewer: Flagg Creek ($0.98 sewer service plus $2.50 user fee per 1,000 gallons, and a $33.66 bi-monthly availability fee halved); Flagg Creek's meter reading charge is not included.
Electricity is ComEd single-family without electric space heat, using the same January 2026 rates, 609 kWh sample bill and annual supply average as Burr Ridge's page, with the Village electricity tax of 0.517 cents per kWh on the first 2,000 kWh. Gas is Nicor Rate 1 with the 5.15% Oak Brook gas tax.
Garbage uses the Village page's 2026 Option A (once a week curb) rate, billed by Flood Brothers; the Village page does not state the billing period in the table, so it is read as monthly. Homeowners insurance is not included (no official premium figure).
Property tax payment dates are left out: DuPage has published only the 2025-tax installments, which have passed.
Nothing here is legal, tax or insurance advice.

Sources

Common questions about Oak Brook house costs

What is the property tax rate in Oak Brook?

About 3.59% of the value before exemptions a year (2025 tax year (payable 2026), DuPage County, tax code 6143), plus flat charges on the same bill.

How much is property tax on a $500,000 house in Oak Brook?

About $17,681 a year on $500,000 of the value before exemptions with the general homestead exemption.

How much is the water bill in Oak Brook?

About $98 a month for water and sewer at typical use (4,000 gallons a month) on Village of Oak Brook.

How much does trash pickup cost in Oak Brook?

$25 a month for a house.

Can seniors lower their property tax or bills in Oak Brook?

Yes. Seniors 65+: senior homestead exemption: The Senior Homestead Exemption provides for a maximum of an $8,000 reduction from the equalized assessed valuation.

How much does a house in Oak Brook cost to run each year?

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