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Serving all 14 Winnebago County communities

Basement Finishing in Argyle, IL

Updated

Argyle in short

Permits: Winnebago County Building Division (unincorporated areas). Housing in Argyle has a median build year of 1986 against 1971 for the county, with 19.1% of 141 homes built before 1980. The county's codes page lists the 2015 International Residential Code, so confirm the edition with the Building Division. HomeGuide's national cost guide puts a finish at $30 to $50 per sq ft; no guide publishes a Rockford price.

The local numbers

How old the homes are in Argyle

The Census counts only 141 households and 141 housing units in Argyle, so the percentages below carry wide margins of error and are not ranked against larger places.

The homes in Argyle are neither especially old nor especially new. The median home was built in 1986 (county: 1971); 19.1% of its 141 homes predate 1980 and 9.9% went up in 2000 or later.

Owner-occupied homes make up 100% of Argyle's 141 households. The county figure is 65.9%. 100% of housing units are single-family detached houses (county: 70.4%).

For a building permit in Argyle, the office is the Winnebago County Building Division. It is at 404 Elm Street, Room 403, Rockford, (815) 319-4350. Its posted schedule values a finished basement at a set rate per square foot and charges a processing fee per trade; the schedule is undated, so confirm any dollar figure with the office. The county's codes page lists the 2015 International Residential Code, so confirm the edition with the Building Division.

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 Argyle, with 141 homes, that includes a basement you have just closed in with drywall.

Homes by year built: Winnebago County2000 or later: Winnebago County 13.6%; 1980 to 1999: Winnebago County 23%; 1960 to 1979: Winnebago County 27.9%; 1940 to 1959: Winnebago County 20%; 1939 or earlier: Winnebago County 15.5%Winnebago CountyBuilt 2000 or later13.6%Built 1980 to 199923%Built 1960 to 197927.9%Built 1940 to 195920%Built 1939 or earlier15.5%
Share of housing units by the year built. Source: U.S. Census Bureau, ACS 2024 5-year (2020-2024), table B25034.

Argyle housing and households vs Winnebago County

MeasureArgyleWinnebago County
Residents324283,292
Housing units141125,002
Occupied (households)141116,014
Owner-occupied households141 (100%)76,408 (65.9%)
Renter households0 (0%)39,606 (34.1%)
Median year built19861971
Built before 19400%15.5%
Built before 19600%35.5%
Built before 198019.1%63.4%
Built 2000 or later9.9%13.6%
Single-family detached100%70.4%
Mobile homes0%1.3%
In buildings of 5+ units0%11.4%

Source: U.S. Census Bureau, ACS 2024 5-year (2020-2024), tables B01003, B25003, B25024, B25034, B25035 and B25038. Small-area estimates; wide margins of error.

Local rules

Permits, codes and egress in Argyle

Wikipedia lists Argyle in Boone and Winnebago counties; the Census figures cover the whole place, and we did not research Boone County's permit rules.

Argyle is an unincorporated community, so the Winnebago County Building Division's unincorporated-area rules apply to its Winnebago County part. The Census counts only a small number of households here, so percentages are rough.

Permit office
The Winnebago County Building Division (Regional Planning and Economic Development), 404 Elm Street, Room 403, Rockford, (815) 319-4350, permits and inspects construction in unincorporated areas and also serves Cherry Valley, Durand, New Milford, Rockton, Roscoe and South Beloit. County Code Chapter 18 makes it unlawful to alter a structure without first obtaining a permit. Applications use the Commercial and Residential Building Permit Application with plans. source 1 source 2
Permit fee
County fee schedule (Ordinance 2016 CO 073, the one posted online): Interior Remodel and Finished Basement are valued at $60.00 per square foot, then the permit fee is read from a Structural Valuation Table. The processing fee is $40.00 per trade (structural, electrical, HVAC, plumbing), a contractor change is $40.00 and an additional or re-inspection is $40.00. An egress window permit for an existing structure is $30.00 each plus the $40.00 processing fee. The page warns fees are subject to change by County Board action, and the PDF is undated, so confirm with the Building Division before relying on a dollar figure. source
Code edition
The county's codes page (last modified February 20, 2025) says that as of April 1, 2016 the Building Division follows the 2015 International Building Code, 2015 International Residential Code, 2014 National Electrical Code, the 2015 International Fire, Fuel Gas and Mechanical Codes and the 2014 Illinois State Plumbing Code. Ordinance 2016 CO 034 adopts the 2015 IRC at Winnebago County Code Sec. 18-321 with amendments (we did not retrieve the amendment text). That listing looks old next to the statewide baseline that began January 1, 2025, so confirm the edition with the Building Division before designing. source 1 source 2
Contractor rules
The county application has fields for general, electrical and other contractors, but we found no county contractor registration requirement. Illinois does not license general contractors at the state level. source 1 source 2
Also worth knowing
The Winnebago County Health Department sells radon test kits (call 815-720-4100; the price includes return postage and certified lab analysis) and says kits are also sold at many local hardware and building stores. It also verifies that proposed additions, garages, pools and decks will not adversely affect an existing well or septic system. We found no Health Department rule specific to finishing a basement. source 1 source 2

About Argyle. Argyle is an unincorporated community and census-designated place in Boone and Winnebago counties northeast of Rockford, with 332 residents at the 2020 census. Wikipedia

ZIP codes. 61011. 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

Argyle basement finishing questions

Who issues basement finishing permits in Argyle?

The Winnebago County Building Division (Regional Planning and Economic Development), 404 Elm Street, Room 403, Rockford, (815) 319-4350, permits and inspects construction in unincorporated areas and also serves Cherry Valley, Durand, New Milford, Rockton, Roscoe and South Beloit. County Code Chapter 18 makes it unlawful to alter a structure without first obtaining a permit.

What building code applies to a basement in Argyle?

The county's codes page (last modified February 20, 2025) says that as of April 1, 2016 the Building Division follows the 2015 International Building Code, 2015 International Residential Code, 2014 National Electrical Code, the 2015 International Fire, Fuel Gas and Mechanical Codes and the 2014 Illinois State Plumbing Code. Ordinance 2016 CO 034 adopts the 2015 IRC at Winnebago County Code Sec. 18-321 with amendments (we did not retrieve the amendment text).

Does a basement bedroom in Argyle 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 Argyle?

County fee schedule (Ordinance 2016 CO 073, the one posted online): Interior Remodel and Finished Basement are valued at $60.00 per square foot, then the permit fee is read from a Structural Valuation Table. The processing fee is $40.00 per trade (structural, electrical, HVAC, plumbing), a contractor change is $40.00 and an additional or re-inspection is $40.00. The permit fee is separate from the build cost; see the cost page for what finishing itself runs.

How old are the homes in Argyle?

Per the ACS 2020-2024 5-year estimates, the median home in Argyle was built in 1986 (Winnebago County: 1971). 0% of its 141 homes were built before 1940 and 19.1% before 1980, against 63.4% county-wide.

What does finishing a basement cost in Argyle?

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.

Do basement contractors have to be licensed or registered in Argyle?

The county application has fields for general, electrical and other contractors, but we found no county contractor registration requirement. Illinois does not license general contractors at the state level.

Planning a basement finish in Argyle?

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