House painting in Greenfield.

The Census Bureau’s American Community Survey (2020–2024) puts the median year built for housing in Greenfield at 1974 (margin ±2 years). The 1970s were the city’s biggest building decade, with 26.0% of its 17,932 housing units; the 1950s add 16.1%, the 1960s 13.4% and the 1980s 11.2%. Only 5.9% of homes date from 1939 or earlier, and 13.1% were built in 2000 or later.

The city is young as well. The Encyclopedia of Milwaukee traces Greenfield to the Town of Kinnickinnic, created in 1839 and renamed in 1841. Between 1906 and 1952 the town was partitioned, as West Allis, West Milwaukee, Greendale and Hales Corners became cities and villages of their own and Milwaukee annexed other parts, so when Greenfield finally incorporated as a city in 1957, after legal battles that ended in the Wisconsin Supreme Court, it was barely a third of its original size.

For paint, a house from these decades often means painted wood trim, fascia and soffits over siding that may be wood, aluminum or brick. The city’s building code still lists aluminum siding among the accepted exterior surfaces, beside stone, brick, wood siding, wood shingles and stucco (§15.93(3)). Aluminum takes paint well once it is washed free of the chalk an aging factory finish leaves behind and any bare metal is primed. We confirm what your siding is at the estimate.

Age also decides whether Wisconsin’s lead-safe rule applies. The Census counts homes by decade, so the share built before 1978 can only be bracketed: between 52.9% (built before 1970) and 72.8% (built before 1980) of Greenfield’s owner-occupied homes.

Painting is not on the city’s permit list. The Neighborhood Services Department’s permits page names the projects that need a building permit, among them siding, fences, decks, roofing (three layers), structural alterations, and additions and alterations inside or out. A repaint is not one of them, but if prep turns up rotten siding or a failing deck, that repair may be.

Upkeep is set by the property maintenance code, chapter 29, which covers every building on a lot: the house, the garage and the shed. A surface that has been painted must be repainted, resurfaced or otherwise treated “in a workmanlike manner” when its condition is a serious blighting influence on surrounding property (§29.06(6)). The same section asks for exterior walls free of holes, breaks and loose or rotting boards that could let rain in (§29.06(2)(a)).

The zoning code also provides for an HPO Historic Preservation Overlay district. Inside one, no alteration to a structure’s architectural appearance, which the code says includes any exterior change, may be made until the Plan Commission approves the plans, taking a Historic Preservation Commission’s recommendation into account; the Plan Commission decides within 60 days of the application for a Certificate of Appropriateness (§21.04.0311(E)). We found no published list of HPO properties, and the city’s current list of boards and commissions does not include a Historic Preservation Commission. To check your own zoning, use the city’s Property Information Search or ask Community Development.

Wisconsin’s Lead-Safe Renovation Rule applies to a home or property built before 1978 when the work will disturb more than 20 square feet of painted surface outside, more than 6 square feet of painted surface per room inside, replace windows, or involve demolition. That work must be done by a certified Lead-Safe Renovator working for a certified lead company. The Wisconsin Department of Health Services publishes a list of certified companies, updated monthly, so you can check any contractor.

Section 29.11 of the property maintenance code lets the owner or the buyer of a residential building ask for a city inspection before the sale closes. If an inspection is done, a certificate of compliance has to be obtained, and changing ownership without one is a violation. When the problems found are not an immediate threat to health or safety, the city may issue a temporary certificate so the sale can go ahead; the seller and the buyer are then jointly responsible for fixing the violations within the time the city sets.

The inspection is made under chapter 29, which holds the paint and fence rules above, and a noncompliance notice gives 30 days, or a reasonable time after that, to comply (§29.11(4)). If you are getting a house ready to sell and expect an inspection, tell us the closing date at the estimate so the exterior work can be scheduled ahead of it.

U.S. Census Bureau (tables B25003, B25024, B25034, B25035, B25036): American Community Survey 2020–2024 housing tables, read October 22, 2026.

U.S. Census Bureau: 2024 Gazetteer, Wisconsin places, read October 22, 2026.

Encyclopedia of Milwaukee (University of Wisconsin–Milwaukee), entry on Greenfield: City history, read October 22, 2026.

City of Greenfield, Neighborhood Services: Permits, read October 22, 2026.

City of Greenfield: Department of Neighborhood Services, read October 22, 2026.