Courtyards, Towers and the Highlands: Pest Control Across South Shore

Railroad stops, a 1905 enclave and an interwar building boom

Before the 1880s most of this ground was wet and low, crossed by trails on a few sandy ridges. It lay in the southern reach of Hyde Park Township and came into Chicago with the 1889 annexation. Settlement grew around Illinois Central stations as small clusters with their own names: Bryn Mawr near the station at 71st and Jeffery by the early 1890s, Parkside just west of it between 67th and 71st, Essex to the south toward 75th, and Windsor Park and Cheltenham Beach farther down the shore. The 1893 fair in Jackson Park and steelworkers settling near the mills to the south both drove lot sales.

The Jackson Park Highlands followed in 1905 as an enclave of large houses on a curving grid. Then the interwar boom filled the interior blocks with brick courtyard buildings, walk-ups and cooperative apartments, plus rows of bungalows. South Shore reached about 80,500 residents in 1970 and has since lost more than a third of that, yet it remains one of the densest parts of the South Side, with a 2024 estimate near 53,600. Density, old masonry and the lake on one side shape nearly every pest call here.

German cockroaches in courtyard buildings and South Shore Drive towers

German cockroaches are the most persistent indoor problem in South Shore, because the housing is built to share. A 1920s U-shaped or E-shaped courtyard building can hold dozens of units around a garden court, each wing served by full-height plumbing risers and steam lines that pass through every kitchen and bathroom. The lakefront towers add trash chutes, compactor rooms and long plumbing chases. Roaches move along all of them, and frequent tenant turnover keeps bringing new ones in with boxes, appliances and secondhand furniture.

These roaches breed fast in warm, damp spaces. A female carries an egg case with dozens of eggs, and a population can multiply many times over in a few months behind a stove or under a leaking sink. Seeing a few at night when a light is switched on usually means a much larger group is hiding in cracks nearby. Small dark specks in cabinet hinges, a musty odor and shed skins under the sink are the other signs.

Spray cans make things worse by scattering roaches into the walls and the next unit. What works is a coordinated program: gel baits and insect growth regulators placed in every unit along an affected riser, plus the trash room, chute hoppers and laundry room, followed by return visits. Residents help most by clearing under-sink cabinets for the technician, fixing drips promptly and keeping cardboard out of kitchens.

House mice and the long common basements

Mice run a close second, and they use the same architecture. Courtyard buildings typically sit on one long common basement with several separate entries and rear stairwells. After a century of freeze and thaw, mortar joints at grade open, basement window frames sag and holes left by removed utility lines go unpatched. Ivy and shrubs in the garden court give mice cover right at the foundation. Once inside, they climb the risers to every kitchen in a wing.

Treating a single apartment pushes mice next door, and they come back within weeks. Effective work treats the building: the basement is sealed at grade with mortar and metal mesh, riser penetrations are packed floor by floor, and traps or tamper-resistant stations go into common areas with scheduled checks. Mice surge in October and November, but in older courtyard buildings they are active all year. Bungalow owners on the interior blocks face a simpler version of the same thing, with entry around raised-basement windows and utility lines.

Norway rats are a smaller but real third rodent. They favor the alleys behind courtyard buildings, where shared dumpsters and carts overflow after move-outs, and the base of the Metra Electric embankment that runs through the neighborhood toward South Chicago. Burrows show up under rear stoops, beside garage slabs and in the soil of neglected garden courts. Rats rarely live inside these buildings, but they enter basements through broken window screens and gaps beside utility lines when food is close. Closed lids, bulk trash scheduled with the city instead of left in the alley, and exterior bait stations along the building line keep them outside.

Midges, orb weavers and the lake side of every building

Lake Michigan produces heavy summer swarms of non-biting midges, and those insects pull orb-weaving spiders onto the lake side of South Shore's towers and the courtyard buildings nearest the water. Webs fill balcony corners, window frames and the fixtures around exterior lights almost overnight, and the insect remains they collect stain railings and sills. The spiders are harmless to people and actually reduce midge numbers, but owners and associations still want the webs gone.

Seasonal exterior spider treatments, regular sweeping of webs and egg sacs, and switching balcony and entry lights to warmer bulbs that draw fewer insects work together. Managing lighting is the most underrated step, because fewer insects at a light means fewer spiders building there. Boxelder bugs and Asian lady beetles also gather on sunny lake-facing walls in fall and slip in around window frames. Association boards often schedule the first exterior spider service for late May or early June, just before the midge peak, and a second in midsummer, which keeps balcony webs from becoming a weekly chore.

Raccoons, squirrels and skunks in the Highlands

In the Jackson Park Highlands the pest picture flips from indoor insects to wildlife. Big trees, deep yards and Jackson Park directly north bring raccoons, gray squirrels, striped skunks and Virginia opossums. Raccoons den in chimneys and attics in late winter. Squirrels chew into eaves, dormers and soffit corners, often where a large limb overhangs the roof. Skunks dig under porches and garden sheds, and opossums settle under decks and in garages.

The older trees on these lots also drop limbs in storms, and a broken branch can tear open a soffit or a section of roof edge that wildlife find within days. After a big storm, a look at the roofline from the yard is worth the time. Exclusion with one-way doors, followed by metal-backed repairs, is the standard approach. Eastern subterranean termites and carpenter ants are worth watching where porch wood, steps or sills sit close to soil, since many Highlands houses are well over a century old. Moles also tunnel through the larger Highlands lawns in spring and fall, raising ridges across yards, and are best handled with targeted trapping rather than grub treatments.

A quick guide by building type

Different building types often share a single block here, which means one building's problem becomes the neighbor's. A courtyard building with mice sends them into the bungalow next door each fall, and a raccoon in a Highlands chimney is a short climb from the next roof. When a provider inspects, mention what you have seen on neighboring properties, because the source is not always where the problem shows up. Owners of single-family homes beside large apartment buildings should pay special attention to shared fences, gangways and garbage areas, where rodents cross between properties. Co-op shareholders and condo owners can also ask the board for the building's service log, which shows which wings and floors have needed repeat visits and where sealing work is still outstanding.

• Courtyard building or co-op: basement walls, garden-court plantings, riser openings behind stoves, sinks and radiators
• Lakefront high-rise: trash chutes and rooms, plumbing chases, balcony corners and window frames
• Bungalow: raised-basement windows, utility entries, attic vents and the garage
• Highlands house: chimney caps, attic vents, soffits, porches and wood near soil

How the lake shifts South Shore's calendar

The lake keeps spring cool here and holds fall warmth a little longer than inland neighborhoods, so the outdoor season starts later and ends later. Raccoons and squirrels begin nesting in Highlands chimneys and attics in March and April. Termite and carpenter ant swarms appear on warm spring days. By June the midges arrive, and spiders follow on lake-facing walls through August. Summer is also peak breeding for German cockroaches indoors and the busiest time for skunks around porches.

Fall stays mild near the shore, but by October mice are moving into courtyard basements across the neighborhood, and lady beetles and boxelder bugs cluster on sunny walls. Winter is the sealing season, in basements of older buildings and on Highlands rooflines, since dens are less likely to hold young and masonry repairs can be planned for the first warm stretch of spring. Midwinter cold snaps push the last stragglers indoors, so a mouse sighting in January in a courtyard building usually means the basement was never fully sealed.

Prevention for towers, courtyards and Highlands homes

Prevention looks different for a sixth-floor tenant on South Shore Drive than for a Highlands homeowner, so the list mixes both. Building-wide items belong with the landlord, management or co-op board. Repeating the seasonal steps each spring and fall matters more than doing everything once. Start with the openings closest to the ground and work upward, since mice and roaches use the lowest gaps first and wildlife the highest. Renters can handle the in-unit items themselves and pass the rest to management in writing.

• Pull ivy and shrubs a foot or more back from courtyard building foundations
• Seal riser and pipe openings behind sinks, stoves and radiators with copper mesh and sealant
• Keep trash room doors shut and chute hoppers cleaned on a schedule
• Report roaches early so neighboring units and the trash room are treated together
• Switch balcony and entry lights to warm-toned bulbs
• Cap Highlands chimneys and cover attic vents with heavy mesh
• Keep firewood and mulch away from Highlands foundations and porch wood
• Skirt porches and sheds with buried mesh against skunks

Boards, managers and Highlands owners: how service works

Most South Shore courtyard buildings and towers run pest work through a condominium board, a cooperative or a property manager. Effective programs include scheduled visits, access to every unit in a wing during a single visit, and treatment of basements, trash rooms and laundry rooms. Residents usually need to clear under-sink cabinets and pull small appliances away from walls before the visit. Chicago's residential landlord rules generally put the burden of keeping rental buildings free of rodents and insects on owners, but a provider can only treat what tenants make accessible.

In the Highlands, homeowners arrange visits directly. Wildlife specialists inspect the roofline and chimney, choose between exclusion doors and live trapping under Illinois rules, and then seal openings. Because the Highlands is a Chicago landmark district, exterior repairs should match original masonry and trim. Many providers can schedule within a day or two, and same-day help is often available for an animal inside the house.