Basement Finishing in New Milford, IL
Updated
New Milford in short
- 401
- households in New Milford
- 1984
- median year built (county 1971)
- 44.9%
- of homes built before 1980 (county 63.4%)
- 91.3%
- own their home (county 65.9%)
The local numbers
How old the homes are in New Milford
New Milford skews newer than Winnebago County as a whole. 21.7% of its 419 homes were built in 2000 or later, against 13.6% county-wide, for a median year built of 1984. Only 44.9% predate 1980 (county: 63.4%), so the permit and code rules below matter more here than the age of the foundation.
Owner-occupied homes make up 91.3% of New Milford's 401 households. The county figure is 65.9%. Only two of the 13 Winnebago County communities have a higher owner-occupied share. 70.2% of housing units are single-family detached houses (county: 70.4%), and 29.8% are mobile or manufactured homes.
For a building permit in New Milford, 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 New Milford, with 419 homes, that includes a basement you have just closed in with drywall.
New Milford housing and households vs Winnebago County
| Measure | New Milford | Winnebago County |
|---|---|---|
| Residents | 1,194 | 283,292 |
| Housing units | 419 | 125,002 |
| Occupied (households) | 401 | 116,014 |
| Owner-occupied households | 366 (91.3%) | 76,408 (65.9%) |
| Renter households | 35 (8.7%) | 39,606 (34.1%) |
| Median year built | 1984 | 1971 |
| Built before 1940 | 6.4% | 15.5% |
| Built before 1960 | 28.2% | 35.5% |
| Built before 1980 | 44.9% | 63.4% |
| Built 2000 or later | 21.7% | 13.6% |
| Single-family detached | 70.2% | 70.4% |
| Mobile homes | 29.8% | 1.3% |
| In buildings of 5+ units | 0% | 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 New Milford
- Permit office
- The Village of New Milford, 6771 11th Street, issues a zoning permit, and its application states that building permits come from the Winnebago County Building Department, 404 Elm Street, Rockford, 815-319-4350. The County Building Division also lists New Milford among the municipalities it serves. source 1 source 2
- Code edition
- County codes apply. The county's codes page (last modified February 20, 2025) lists the 2015 International Residential Code, which looks old next to the statewide baseline that began January 1, 2025, so confirm the edition with the Building Division. source
- 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 New Milford. New Milford is a village on the south bank of the Kishwaukee River overlooking the south side of Rockford, with 794 residents at the 2020 census. Wikipedia
ZIP codes. 61109. Census 2020
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Common questions
New Milford basement finishing questions
Who issues basement finishing permits in New Milford?
The Village of New Milford, 6771 11th Street, issues a zoning permit, and its application states that building permits come from the Winnebago County Building Department, 404 Elm Street, Rockford, 815-319-4350. The County Building Division also lists New Milford among the municipalities it serves.
What building code applies to a basement in New Milford?
County codes apply. The county's codes page (last modified February 20, 2025) lists the 2015 International Residential Code, which looks old next to the statewide baseline that began January 1, 2025, so confirm the edition with the Building Division.
Does a basement bedroom in New Milford 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 old are the homes in New Milford?
Per the ACS 2020-2024 5-year estimates, the median home in New Milford was built in 1984 (Winnebago County: 1971). 6.4% of its 419 homes were built before 1940 and 44.9% before 1980, against 63.4% county-wide.
What does finishing a basement cost in New Milford?
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 New Milford?
Tell us the address, the rough basement size and what you want down there. We reply with a price before any work is scheduled.