Delavan Lake, WI

Delavan Lake's first famous residents were circus animals. According to At The Lake Magazine (2019), Edmund and Jeremiah Mabie brought their circus to Delavan in 1847 with 27 wagons and eight elephants and bought 400 acres on the lake, a holding that grew to about 1,000 acres on the ground that is now Lake Lawn Resort. Between 1847 and 1894, 26 circus companies wintered in the Delavan area. Wikipedia says the original Lake Lawn hotel was built in 1878 to house members of the Mabie circus.

The lake's resort era came next. Another part of the Mabie land, a 38-acre tract known as Mabiewood, was sold in 1898 for $15,000 to the Delavan Lake Assembly Association, according to At The Lake Magazine's Assembly Park history. The grounds had an auditorium that held up to 3,000 people until it burned in 1919.

The modern lake is the product of a cleanup. By the 1980s the lake had serious algae problems. A 2012 Western Dredging Association paper says the Delavan Lake Sanitary District put sewers around the lake in the 1980s at a cost of $50 million, ending discharges from failing septic systems. Then the town and city ran a $7 million rehabilitation, completed in 1992, that lowered the lake, killed the entire fish population to remove carp, treated the bottom with alum, built three sediment ponds on Jackson Creek and a peninsula at the inlet, rebuilt the outlet dam and restocked game fish. Water clarity reached 26 feet.

That history still matters on a purchase. The lake's water quality is managed, funded and argued about every year, and the tax bill on a lake house carries a line for it. Coming from Lake County, Illinois, where most lake buyers I talk to know the Chain O'Lakes, the level of lake management here is usually the first surprise.

Three governments touch Delavan Lake, and a listing usually names none of them. The Town of Delavan is a separate town government covering about 25.3 square miles of land and 2.8 square miles of water, according to Wikipedia,_Wisconsin), and it holds most of the shoreline. The City of Delavan sits to the north and reaches the lake around Lake Lawn and the outlet. A slice of the west end is in the Town of Walworth. The Delavan Lake Census-designated place, which most statistics use, spans parts of the Town of Delavan and the Town of Walworth.

The lake itself, per the Wisconsin DNR, covers 1,906 acres with a maximum depth of 52 feet and a mean depth of 21 feet. It is a drainage lake, fed mostly through the inlet on the east end. The DNR lists four public boat landings and one beach.

The housing tells you what kind of place this is. The 2020-2024 Census ACS counts 2,857 housing units in the Delavan Lake Census area, and 1,636 of them, about 57%, are held for seasonal, recreational or occasional use. Of the 1,199 homes occupied year-round, about 89% are owner-occupied. About 82% of all units are detached single-family homes, and the rest are mostly condominium and small multi-unit buildings.

The wider Town of Delavan looks similar. The ACS counts 3,846 housing units in the town, 1,687 of them seasonal, about 44%. For a buyer, the practical meaning is a lightly used lake from October to April and a busy one on summer weekends.

Delavan Lake is described by shore rather than by subdivision, including in the public sale summaries. The South Shore holds the deepest, priciest frontage. The North Shore runs from Lake Lawn and the outlet east toward the inlet. The west bay is a slow-no-wake zone, which changes how a pier gets used. The inlet, north of the Highway 50 bridge, is shallow, no-wake water. Then there are the lake-access neighborhoods behind the shoreline, the condo complexes and Assembly Park, which is a category of its own.

The local agent who publishes yearly Delavan Lake sale summaries tracks three markets separately: lakefront homes, lake-access homes with a deeded pier or slip, and lake-access condos. That is the right way to think about it. A house with 100 feet of South Shore frontage and a house two streets back with a shared pier are both "Delavan Lake homes" on a listing site, and they are priced in different worlds.

Before I would call any stretch by a subdivision name, I would want it checked against the MLS subdivision field.

Assembly Park is the one place on Delavan Lake where the usual rules of buying a house do not apply. According to At The Lake Magazine (updated April 2026), the Delavan Lake Assembly Association board technically owns all of the lots in the 38-acre park and administers the whole property. The owners of its 211 cottages are leaseholders under a 99-year lease that originally ran to 1998 and has been extended to 2075.

That structure is the first thing I would want a buyer to understand. You own the cottage. You lease the ground. The lease term, the association's rules on transfers and rentals, the fees, and what happens at the end of the term all belong in your review before you write an offer, and they belong in your lender's review too. Some lenders treat leasehold property differently, and the lease length remaining can affect financing.

The park itself is historic and well kept. The same article describes recent permeable paver roads and LED lighting chosen to limit light pollution, and traditions that include a Fourth of July parade and a September Arbor Day celebration.

The best public read on this lake comes from the yearly sale summaries a local agent publishes, and the headline is scarcity. His August 2025 summary counted only four lakefront sales in the prior year, against nine in 2024, with prices from $142,500 for a small three-bedroom to $3,600,000 for a five-bedroom on 157 feet of South Shore frontage. It counted 33 lake-access home sales, down from 42, and 30 lake-access condo sales, down from 34, at $27,000 to $515,000. At that point three lakefront homes were listed, from $750,000 to $3,350,000.

The longer series shows the same pattern. His 2024 summary, posted February 2025, lists nine lakefront sales from $832,500 to $4,400,000, and 12 in 2023 from $565,000 to $4,125,000. His 2022 summary counted eight lakefront sales, down from 17 in each of 2021 and 2020, and lake-access homes from $95,000 to $618,000. Lakefront volume has fallen from 17 a year to single digits.

For something more recent, Redfin's public market tracker for the Delavan Lake Census area counted 19 sales from December 2025 through May 2026, between one and eight a month. May 2026 had four sales at a $377,500 median. Those totals mix lakefront, lake-access, condo and off-lake homes, which is why the median sits far below the lakefront prices. Zillow's index for the 53115 ZIP code, which covers the lake and the city, was $344,098 in August 2026, up 5.4% in a year. The ACS median value for owner-occupied homes in the Census area is $355,500, plus or minus $34,948.

My read is that this is a supply story. With four to nine lakefront sales a year, there is no reliable median for frontage, and every sale is a negotiation built on frontage, depth, exposure and the house. These summaries are one agent's counts, not an official data set, and the newest is from August 2025, so treat them as a guide.

At the top, Delavan Lake is a $3 million to $4.5 million market, with a few listings above that. The 2024 summary calls a $4,400,000 sale of a 10,000-square-foot home on 200 feet of South Shore frontage the most expensive single-family sale on Delavan Lake. In July 2024 the same agent's mid-year update listed the top lakefront offering, 3307 South Shore Drive, at $5,500,000 for a 10,000-square-foot estate on 200 feet of frontage and 4.62 acres. The descriptions match, but the summary does not name the address of the $4.4 million sale, so I would not assume they are the same house.

The other top sales in those summaries were $3,125,000 in 2022 for a six-bedroom, seven-bath home on 111 feet of South Shore frontage, $4,125,000 at the top of 2023, and $3,600,000 in the year to August 2025 for a five-bedroom on 157 feet. Divided by frontage, which is a rough tool since the house is in the price, those sales work out to roughly $22,000 to $28,000 per front foot by my arithmetic.

What moves price at this level is the same on every lake I have seen buyers shop. Frontage and water depth off the pier come first. Then exposure, lot depth and privacy from the road, then the house. On Delavan Lake, the South Shore premium shows up in every year's top sale.

For perspective, Geneva Lake, a few miles south, is the region's higher-priced lake, and its top sales run well above Delavan's. A buyer with a $4 million to $8 million budget usually looks at both. My guides to Fontana-on-Geneva Lake, Williams Bay and Lake Geneva cover that side.

Coming from Lake County, Illinois, the tax bill is the first thing people compare, and on Delavan Lake it usually compares well. Wisconsin taxes assessed value at a mill rate, a dollar amount per $1,000. The Walworth County Treasurer's 2025 sheet lists these Town of Delavan rates per $1,000 of assessed value: Walworth County $2.46, Town of Delavan $3.05, Gateway Technical College $0.56, Delavan Lake Sanitary District $1.35 and the Lake Comus district $0.14 on parcels inside it. The school levy tax credit takes off $1.24.

The school line is where parcels differ. The same sheet shows four school districts levying inside the Town of Delavan: Delavan-Darien at $6.58, Williams Bay at $4.71, Elkhorn at $7.05, and Fontana J8 at $1.66 together with Walworth Big Foot Union High School at $1.71. By my arithmetic, a town parcel on the sanitary district works out to about $12.76 per $1,000 net in Delavan-Darien, $10.90 in Williams Bay, $13.24 in Elkhorn and $9.56 in the Fontana and Big Foot combination. A 2025 town bill I checked on the county's tax portal showed exactly the Delavan-Darien figure, $12.76. Read the school district on the actual bill.

The assessment ratio is next. The Department of Revenue's 2025 comparison puts the Town of Delavan's overall ratio at 95.07%, after a 2024 revaluation lifted it from 72.14% in 2023. On the Town of Walworth end of the lake the rates and ratio differ: about $14.06 per $1,000 net in Delavan-Darien with the sanitary district, at a 2025 ratio of 82.84%.

Here is a worked example. A $3,600,000 lakefront home in the Town of Delavan, Delavan-Darien district, assessed at 95.07% is about $3,422,500. At $12.76 per $1,000 the tax is about $43,700 a year, roughly 1.21% of the price. The state's lottery and gaming credit, averaging $190, applies only to a primary residence as of January 1, so a second home does not get it.

At closing, Walworth County lists the transfer fee at $3 per $1,000 of value, rounded to the next higher hundred: $10,800 on a $3.6 million sale, normally paid by the seller. This is general information, not tax advice. Your actual bill depends on your parcel, its school district and the assessor.

The Delavan Lake Sanitary District is the most important local body most buyers have never heard of. According to its own site, it provides sewer service and lake management for the Town of Delavan area around the lake. It was created in 1969 to run a wastewater collection system, and since 1995 it has helped the town monitor lake levels and operate the Delavan Lake (Borg) dam. Its lake management plan was written by the Southeastern Wisconsin Regional Planning Commission in 2002 and updated in July 2022.

Its work shows up on your bill and on the water. The 2025 levy is about $1.35 per $1,000 of assessed value in the Town of Delavan. On the water, it runs the weed harvesters. Its October 2025 report to the town's lake committee called 2025 a record year, with more than 10,000 cubic yards of aquatic plants harvested, said it was applying for grants for new harvesters, and said an offer had been accepted on 20 acres of land for managing harvested plant material.

The same report gives a feel for the lake's condition. In October 2025, Secchi disc clarity readings averaged 8.8 feet with a maximum of 12 feet. The lake's average elevation was 927.71 feet against the DNR's summer expectation of 927.86 feet. Ice came on January 7, 2025 and went off March 14, 2025.

For a buyer, the sanitary district means a lake house here is on public sewer rather than a septic system, which is a real advantage over many Wisconsin lakes. Ask the seller for the most recent sewer bill, and if the parcel sits at the edge of the district, confirm it is actually connected.

Delavan Lake's water quality is good by the standards of its history and still a constant job. The 1989-1992 rehabilitation removed the carp and the worst algae. A 2009 U.S. Geological Survey paper found the trade-off: the biomanipulation eliminated the blue-green blooms and poor clarity at first, but phosphorus rebounded, and plant overgrowth and filamentous algae became the new problems. Its conclusion was that lasting results depend on cutting phosphorus coming in from the watershed.

That is why so much of the work is at the inlet. According to the 2012 dredging paper, about 68% of the lake's water comes through the inlet and its 3,000-foot channel, fed by a 26,000-acre watershed, and sedimentation ponds upstream filter about 70% of the runoff from Jackson Creek. The Town of Delavan ran three maintenance projects between 2005 and 2011. The last, the North Inlet project in 2011, removed about 45,000 cubic yards of sediment to restore the 210-acre inlet, which had lost about 56% of its natural depth. The town administrator at the time put its cost at $1.6 million.

The ponds need the same care. FOX6 reported in July 2023 that the Mound Road ponds had not been cleaned since 2007 despite needing it every three to five years, and that an $800,000 dredging project was due to finish by September 30, 2023.

The DNR's lake page lists the invasive species found here, including zebra mussels, Eurasian water-milfoil and curly-leaf pondweed. None of that is unusual for a southern Wisconsin lake. For a buyer, it means a pier and lift will see zebra mussels, the shoreline will see weeds in late summer, and the lake's annual management is part of the cost of owning on it.

The City and Town of Delavan share one boating ordinance for Delavan Lake and Lake Comus. Under Chapter 19, boats must stay at slow-no-wake within the 200-foot shore zone and within 200 feet of swimmers, marked swim areas, diving flags, canoes, rowboats, sailboats, bridges, public landings and anchorages. The west bay is slow-no-wake inside a buoy line from the Chicago Club stairs on the north shore to Blue Gill Road on the south shore, and so is the inlet north of the Highway 50 bridge and the outlet west of the North Shore Drive bridge.

Night rules are worth checking. The ordinance text sets a 15 mph limit in the traffic lane from sunset to sunrise, while the town's current summary says slow-no-wake applies between sunset and sunrise. I would follow the stricter rule and confirm with the town's water safety patrol. The summary also limits skiing to the traffic lane, with no more than two tow lines per boat and one person per line, and the ordinance bans anchoring or mooring on open water with people living or sleeping aboard between 10 p.m. and 4 a.m.

Public access is at the Town's Community Park, 5621 Town Hall Road. The town's lake regulations describe a lighted launch and lot with more than 150 trailer spaces, launch fees set within DNR limits with daily and seasonal passes, a $100 fine for not paying, a $25 overnight parking fee and a free DNR life jacket loaner program. Visit Lake Geneva describes the park as about 15 acres of lakefront with the public beach.

For owners, the town requires a permit for a swim raft or mooring buoy, $30 for three years, and pier address numbers at least three inches high in a contrasting color. Keep both in mind when you inspect a lake house: an unpermitted raft or a missing number is an easy fix, and it is better to know before closing.

If you plan to add on, rebuild or replace a pier, the rules are tighter on the water than buyers from Illinois expect. In the towns, Walworth County administers shoreland zoning under the state's minimum standards in NR 115, which covers land within 1,000 feet of a lake. The base rule is a 75-foot setback from the ordinary high-water mark to the nearest part of a building. A county can reduce a new home's setback to the average of the homes on each side, but never below 35 feet.

The same code requires a vegetative buffer extending at least 35 feet inland from the high-water mark, where clearing is limited. Access and viewing corridors through that buffer may not exceed the lesser of 30% of the frontage or 200 feet. Counties must also limit impervious surfaces such as roofs, driveways and patios within 300 feet of the water. The code sets minimum lot sizes too: sewered lots need a 65-foot average width and 10,000 square feet, and unsewered lots 100 feet and 20,000 square feet. The county's own ordinance can be stricter, and the City of Delavan has its own rules for its part of the shore.

Piers have their own state rule. Under Wis. Stat. 30.12, a pier is exempt from a DNR permit if it is no more than 6 feet wide, with a loading platform of up to 200 square feet, has no more than two boat slips for the first 50 feet of shoreline and one more for each additional full 50 feet, and extends only to 3 feet of water at summer low or to the depth needed to moor a boat or use a lift, whichever is farther. Anything bigger needs a permit or must qualify under older grandfathering rules.

Two practical points. A big existing house closer than 75 feet may be legal as a nonconforming structure, but expanding it can run into limits, so ask the county before you price an addition into your plans. And check the FEMA flood map and the lake's elevation history for any low lot.

On Delavan Lake, the school district depends on the parcel, and four districts levy taxes inside the Town of Delavan alone, according to the county's 2025 rate sheet. Most of the lake is in the Delavan-Darien School District, a K-12 district with an enrollment of 1,747 in the 2023-24 federal school directory. Parts of the town are in the Williams Bay School District, with 627 enrolled, and the Elkhorn Area School District, with 3,490.

The fourth combination follows the Wisconsin lake-country pattern of a K-8 district feeding a union high school. Parcels there pay Fontana J8, the elementary district for Fontana-on-Geneva Lake, and Walworth Big Foot Union High School. The Town of Walworth end of the lake adds more districts again, including Linn J6 and Walworth J1.

Two consequences for a buyer. The school district changes the tax rate by more than $3.50 per $1,000 of assessed value across the town, which is real money on a lake house. And the district sets school assignment, so confirm the district on the tax bill and with the district office before you write an offer. For test results and ratings, the Wisconsin DPI report card portal has the 2024-25 cards, released November 11, 2025.

Delavan Lake is a drive-to lake. Highway 50 crosses the inlet on the east end and runs east to Lake Geneva, Kenosha and I-94, and I-43 runs past the City of Delavan on the north side toward Milwaukee.

Here are my estimates, from Census center points and the usual routes, outside rush hour. They are not a published source, so test the drive at the hour you would make it. To Vernon Hills and central Lake County, Illinois: about 42 miles in a straight line, roughly 75 to 90 minutes. To O'Hare: about 57 miles in a straight line, roughly 80 to 95 minutes. To the Loop: about 71 miles in a straight line, roughly 1 hour 45 minutes to 2 hours. To downtown Milwaukee: about 46 miles in a straight line, roughly an hour. Milwaukee Mitchell Airport is about 44 miles away.

For the train, Metra's Harvard station, the end of the Union Pacific Northwest line, is about 12 miles south of the lake in a straight line. Metra's schedule data for the week of September 28, 2026 shows 14 weekday trains to Chicago and 13 back, with morning trains taking 92 minutes to Ogilvie. Fox Lake, the end of the Milwaukee District North line, is about 25 miles away.

Most lake owners I talk to in Illinois use the house on weekends, so the Friday afternoon drive is the number that matters. Leaving Lake County after 3 p.m. on a summer Friday adds real time, and I would plan around it.

Lake Lawn is the lake's anchor property. Wikipedia traces it from an 1878 hotel for the Mabie circus to a winter base for Barnum and Bailey, a Commonwealth Edison employee retreat from 1923, a golf course in 1928 and an airport in 1948. After a $390 million redevelopment plan by Delavan Resort Holdings in 2004 ended in foreclosure and closure in 2010, investors bought the resort for $9.5 million and reopened it by July 2011. Today it has about 300 rooms, a conference center, a marina, golf and an airport.

It has been reinvesting. BizTimes reported in February 2024 that the first phase of a $10 million renovation of 222 rooms in the main lodge was complete, with the rest due that summer.

For buyers, the residential piece is Harbor Club, on the east side of the resort. The July 2024 market update listed Harbor Club sales in the first half of 2024 from $822,192 to $1,249,234 and six listings from $692,990 to $2,250,000. In January 2025 the City of Delavan's Plan Commission discussed a concept for 36 more lots on the west side of the resort, off North Shore Road along the outlet, on what are now holes 3 and 4 of the golf course. No vote was taken at that meeting. Harbor Club falls under city review, so its taxes follow the City of Delavan's rate, covered in my Delavan guide.

Summer on Delavan Lake centers on the water. The DNR lists musky, walleye, northern pike, largemouth and smallmouth bass and panfish, so fishing runs from spring through ice season. Community Park has the public beach, volleyball courts, playgrounds and four rentable pavilions, according to Visit Lake Geneva. Lake Lawn has golf and a marina, and the resort's 1878 on the Lake restaurant is open to the public.

Visit Lake Geneva also names several restaurants around the lake and town, including the Lookout Bar & Eatery, Isle of Capri Café and Turtle Lake Tap & Grill, plus attractions such as Animal Gardens petting zoo, the Dancing Horses Theatre, Belfry Music Theatre and Staller Estate Winery. Restaurants change hands often in lake country, so check that a place is open before you plan around it.

The City of Delavan's downtown, Phoenix Park's summer concerts and the circus sites are a few minutes north; see my Delavan guide. Geneva Lake, its shore path and the Lake Geneva beaches are about 20 minutes southeast.

Most change on Delavan Lake is maintenance, not construction. Lakefront lots are built out, so new homes usually mean a teardown under the shoreland rules above. The items I would watch are these.

Harbor Club's 36-lot concept on the Lake Lawn golf course went to the City of Delavan's Plan Commission in January 2025 as an informal session with no vote. I have not seen an approval. If it moves ahead, it adds lake-access inventory on the north end.

The Delavan Lake Sanitary District's October 2025 report said it was applying for grants for new harvesters and had an accepted offer on 20 acres for handling harvested plants. After a record 10,000-cubic-yard harvest in 2025, the weed program is the sanitary district's main lake expense to watch on future levies.

Upstream, the Mound Road ponds were dredged in 2023 for about $800,000, and FOX6 reported that the next cleaning would be due five to six years later, around 2028 or 2029. North of the lake, the City of Delavan's Lake Comus dam was replaced in 2024 and the lake began refilling in June 2025, which affects the outlet side of the watershed.

Most of Delavan Lake is patrolled by the Town of Delavan Police Department, and the town runs a water safety patrol on the lake in season. The City of Delavan's Lake Lawn area and the Town of Walworth end of the lake are served by other agencies. I don't characterize the safety of any town or neighborhood. Anyone who wants the data can contact the department through the Town of Delavan or look it up in the FBI's Crime Data Explorer.

Top frontage has traded between about $3 million and $4.4 million, and lake-access homes and condos open the lake to much smaller budgets.

Four to nine lakefront sales a year means you may wait for the right one.