Mount Vernon: old basements on a college ridge

Two in five houses here are older than 1940, so the walls under them are often stone, brick or clay tile.

Foundation and basement help in Mount Vernon, Iowa, starts with the age of the house: 535 of the town's 1,352 homes were built before 1940 and the median year is 1972. Most building permits for the town go through Linn County Planning and Development, and City Hall on First Street NW takes the rest.

A town of older walls

Mount Vernon sits on a ridge in eastern Linn County, about 13 miles east of downtown Cedar Rapids along the old Lincoln Highway. Cornell College, founded as a seminary in 1853, crowns the northwest end of the ridge and the uptown shops line First Street at the other end. The Cornell College and Mount Vernon Historic District, listed on the National Register in 1980, takes in the campus and about 70 houses around it.

The housing count tells the same story. The Census 2020 to 2024 survey finds 1,352 homes in the city, and 535 of them, about 40 percent, date from 1939 or earlier. That is the largest share of any town on this site. Another 201 went up in the 1970s and 186 in the 2000s, the newer ones mostly on the edges of town toward Lisbon and the highway.

What an older basement wall looks like

A house from before 1940 in this part of Iowa often stands on laid stone, brick or hollow clay tile rather than poured concrete. These walls behave differently. Mortar joints soften and wash out over decades, tile can crack across its face, and a stone wall may show damp patches long before it shows any movement. A crack in one of these walls is read differently from a crack in a 1990s poured wall, so describe the wall material when you call.

Water is the common thread. A house on a ridge drains well in principle, but only if the ground beside the wall slopes away and the downspouts carry roof water past it. Check that first after any heavy rain.

Permits: county first, then city

The city's own building permit application says Linn County provides building and zoning services for Mount Vernon, with a few exceptions. For structural work, a remodel, or electrical, mechanical and plumbing work, start with Linn County Planning and Development, Jean Oxley Public Service Center, 935 2nd Street SW, Cedar Rapids, phone (319) 892-5130. Smaller items such as driveways, patios, sidewalks and fences use a city form with a $35 application fee, sent to the zoning administrator at City Hall, 213 First Street NW, phone (319) 895-8742 (city permit page and application, read by search summary 14 November 2026).

Inside the historic district, ask City Hall whether anything outside the house, such as new window wells or regrading, needs a look from the preservation commission before work starts.

West toward Cedar Rapids, Marion has its own page and its own permit office.

Questions people ask

Who issues a foundation repair permit in Mount Vernon?

Linn County Planning and Development handles building permits for the city, with a few exceptions. Call the county at (319) 892-5130, and ask City Hall at (319) 895-8742 about anything the county does not cover.

My Mount Vernon house is from before 1940. What is the wall likely to be?

Often stone, brick or hollow clay tile. Look at the inside face of the wall in a corner the paint has missed, and mention the material when you describe the problem.

Is a damp stone wall the same as a failing wall?

No. Damp patches often come from soil moisture and poor drainage outside. Movement shows as bulging, a step crack in the joints or loose stones, and that is worth a closer look.

Does the historic district change anything for basement work?

Work inside the basement usually does not. Outside changes that can be seen from the street are worth checking with City Hall before you start.

See the full town list, the permit table and basement wall cracks.

A couple of miles further east, Lisbon has a page of its own.