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Serving all 14 Winnebago County communities

Basement Finishing in Winnebago, IL

Updated

Winnebago in short

Permits: Village of Winnebago, Building Safety and Permitting. The median home in Winnebago was built in 1985 (county: 1971), and 43.6% of its 1,180 homes predate 1980. The permit office's adopted code is the 2021 International Residential Code. HomeGuide's national cost guide puts a finish at $30 to $50 per sq ft; no guide publishes a Rockford price.
1,134
households in Winnebago
1985
median year built (county 1971)
43.6%
of homes built before 1980 (county 63.4%)
87%
own their home (county 65.9%)

The local numbers

How old the homes are in Winnebago

Winnebago sits near the middle of the county on housing age. The median home was built in 1985 (county: 1971); 43.6% of its 1,180 homes predate 1980 and 15.3% went up in 2000 or later.

Of 1,134 households in Winnebago, 87% own their home. The county figure is 65.9%. 89.1% of housing units are single-family detached houses (county: 70.4%).

The permit office for most of Winnebago is local, not the county. The Village of Winnebago requires a building permit application before any building. The permit office's adopted code is the 2021 International Residential Code.

Radon belongs on the checklist. IEMA says to retest if renovations or additions are made, and that homes with elevated levels have been found throughout the state. In Winnebago, with 1,180 homes, that includes a basement you have just closed in with drywall.

Homes by year built: Winnebago vs Winnebago County2000 or later: Winnebago 15.3%, Winnebago County 13.6%; 1980 to 1999: Winnebago 41.1%, Winnebago County 23%; 1960 to 1979: Winnebago 19.9%, Winnebago County 27.9%; 1940 to 1959: Winnebago 11.7%, Winnebago County 20%; 1939 or earlier: Winnebago 12%, Winnebago County 15.5%WinnebagoWinnebago CountyBuilt 2000 or later15.3%13.6%Built 1980 to 199941.1%23%Built 1960 to 197919.9%27.9%Built 1940 to 195911.7%20%Built 1939 or earlier12%15.5%
Share of housing units by the year built. Source: U.S. Census Bureau, ACS 2024 5-year (2020-2024), table B25034.

Winnebago housing and households vs Winnebago County

MeasureWinnebagoWinnebago County
Residents2,981283,292
Housing units1,180125,002
Occupied (households)1,134116,014
Owner-occupied households987 (87%)76,408 (65.9%)
Renter households147 (13%)39,606 (34.1%)
Median year built19851971
Built before 194012%15.5%
Built before 196023.7%35.5%
Built before 198043.6%63.4%
Built 2000 or later15.3%13.6%
Single-family detached89.1%70.4%
Mobile homes0%1.3%
In buildings of 5+ units4.2%11.4%

Source: U.S. Census Bureau, ACS 2024 5-year (2020-2024), tables B01003, B25003, B25024, B25034, B25035 and B25038.

Local rules

Permits, codes and egress in Winnebago

The Village of Winnebago publishes no contractor registration rule and no fee formula that we could find.

Permit office
The Village of Winnebago requires a building permit application before any building. The Building Inspector and Code Enforcement Officer reviews it and determines the fees, and the village states a review time of 48 to 72 hours. The page is Building Safety and Permitting on the village website. source
Permit fee
The village says the Building Inspector determines the fees after the application is filed. We found no published formula, so ask the village for a figure. source
Code edition
A village ordinance effective January 1, 2025 adopts the 2021 International Residential Code (One- and Two-Family Dwellings), 2021 International Building Code, 2021 International Fire Code, 2021 International Existing Building Code, 2021 International Mechanical Code and 2021 International Fuel Gas Code, each with village amendments. The ordinance cites Public Act 103-0510 as the reason for updating. We saw a village amendment to the energy table (N1102.1.2) and none to R310 egress in the text we retrieved. source

About Winnebago. Winnebago is a village in Winnebago County with 2,940 residents at the 2020 census. Wikipedia

ZIP codes. 61088. Census 2020

Full pricing, the complete service menu, and the rest of the service area are on the basement finishing in Rockford, IL homepage.

Common questions

Winnebago basement finishing questions

Who issues basement finishing permits in Winnebago?

The Village of Winnebago requires a building permit application before any building. The Building Inspector and Code Enforcement Officer reviews it and determines the fees, and the village states a review time of 48 to 72 hours.

What building code applies to a basement in Winnebago?

A village ordinance effective January 1, 2025 adopts the 2021 International Residential Code (One- and Two-Family Dwellings), 2021 International Building Code, 2021 International Fire Code, 2021 International Existing Building Code, 2021 International Mechanical Code and 2021 International Fuel Gas Code, each with village amendments. The ordinance cites Public Act 103-0510 as the reason for updating.

Does a basement bedroom in Winnebago need an egress window?

Every basement and every sleeping room needs at least one operable emergency escape and rescue opening. A finished basement bedroom needs its own. Net clear opening of at least 5.7 square feet, or 5 square feet for a grade floor or below-grade opening, at least 24 inches high and 20 inches wide, with the sill no more than 44 inches above the floor. These are the model 2021 IRC numbers as reproduced by a state building agency fact sheet; a city or county amendment could change them, so confirm with the permit office.

How much is the permit fee in Winnebago?

The village says the Building Inspector determines the fees after the application is filed. We found no published formula, so ask the village for a figure. The permit fee is separate from the build cost; see the cost page for what finishing itself runs.

How old are the homes in Winnebago?

Per the ACS 2020-2024 5-year estimates, the median home in Winnebago was built in 1985 (Winnebago County: 1971). 12% of its 1,180 homes were built before 1940 and 43.6% before 1980, against 63.4% county-wide.

What does finishing a basement cost in Winnebago?

No cost guide publishes a Rockford figure. HomeGuide's national guide puts a finish at $30 to $50 per sq ft, Angi's Chicago page $55 to $145 per sq ft, and Angi's national average is $32,000. The full price table shows each source and its date.

Planning a basement finish in Winnebago?

Tell us the address, the rough basement size and what you want down there. We reply with a price before any work is scheduled.