These two states wrote very different machines. Iowa's is about who fixes the concrete. Connecticut's is about who gets sued when someone slips on it. Both start from a default that favors you and both give the city a switch to flip it.
Iowa: the city's duty, until the certified letter arrives
Iowa Code Sec. 364.12(2) opens with a sentence most owner-pays states never wrote: "A city shall keep all public grounds, streets, sidewalks, alleys, bridges, culverts, overpasses, underpasses, grade crossing separations and approaches, public ways, squares, and commons open, in repair, and free from nuisance." The baseline duty for sidewalk repair in Iowa sits with the city, in plain statutory text, alongside Michigan and North Carolina.
Then come the exceptions. Paragraph (d): "A city may serve notice on the abutting property owner, by certified mail to the property owner as shown by the records of the county auditor, requiring the abutting property owner to repair, replace, or reconstruct sidewalks." And paragraph (e): if you do not act "within a reasonable time, a city may perform the required action and assess the costs against the abutting property for collection in the same manner as a property tax."
So the Iowa deal is: the city owns the problem until it mails you a certified letter, and after that it is your problem, backed by a property-tax-style assessment. Note the statute does not fix a day count; it says "a reasonable time," which the notice itself will usually define.
Snow is separate and harsher: "The abutting property owner is responsible for the removal of the natural accumulations of snow and ice from the sidewalks within a reasonable amount of time and may be liable for damages caused by the failure of the abutting property owner to use reasonable care." That liability clause is in the state statute itself, not just local ordinance, and the same paragraph says the city's general duty "does not include a duty to remove natural accumulations of snow or ice."
Connecticut: the town hands you its lawsuits
Conn. Gen. Stat. Sec. 7-163a is not about repair at all. It is a liability-transfer statute for snow and ice: "Any town, city, borough, consolidated town and city or consolidated town and borough may, by ordinance, adopt the provisions of this section." Once adopted, the municipality "shall not be liable to any person injured in person or property caused by the presence of ice or snow on a public sidewalk," and the abutting owner "shall have the same duty of care with respect to the presence of ice or snow on such sidewalk" that the town used to carry.
Read that carefully: it does not just make you shovel. It moves the injured pedestrian's lawsuit from the town to you, with the town keeping liability only for its own affirmative acts or where it owns the abutting land. Whether your town has adopted 7-163a is a one-line question to the town clerk, and the answer decides who a slip-and-fall claim lands on. Many Connecticut towns have adopted it; homeowner's insurance is the practical backstop.
What to do
- Iowa: a certified letter starts the clock. Before it arrives, a broken sidewalk is legitimately the city's to fix under 364.12(2); report it and cite the section. After it arrives, doing the work yourself beats the city's assessed price.
- Connecticut: ask the clerk one question. "Has this town adopted Sec. 7-163a?" If yes, your liability exposure on that sidewalk is real and your homeowner's policy should know about it.
- Both states: snow is the sharp edge. Iowa puts snow liability on you by statute; Connecticut lets the town put it on you by ordinance. The concrete may be the city's, the ice is yours.
Sources: Iowa Code 364.12 (official legislature PDF, quoted verbatim) and Conn. Gen. Stat. 7-163a (FindLaw mirror, disclosed per our methodology; the official cga.ct.gov page would not serve full section text). City rules live in the complete city guide.