Slab Leak Repair in Michigan

Slab Leak Repair across Michigan: the 521 ZIP codes and 354 cities we route calls in, and who licenses plumbers in the state.

Call (888) 706-0205

Reinforcing steel cage with pipework run through it before a pour

Free to homeowners in Michigan — the contractor pays us for the introduction, you never do.

Reroute or break the slab

Our slab leak repair coverage in Michigan runs to 521 ZIP codes in 354 cities. Slab-on-grade construction and large municipalities go together, and where a city has grown quickly the supply lines under the floor are often the same age across whole neighborhoods — which is why one street can produce several calls in a season.

Source: coverage area as published by our call partner; place and county names from the US Census Bureau.

We route slab leak repair calls in 521 ZIP codes across 354 Michigan cities, in 28 counties.

What this site is

UnderSlab is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands, and work that opens a structural slab is normally permitted — ask to see the permit. We carry out no work and no leak detection, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

Checking a credential in Michigan

Michigan licenses are issued by the Michigan Bureau of Construction Codes, Department of Licensing and Regulatory Affairs, which publishes a public search you can use before work begins.

21 of the 28 Michigan counties we cover, beyond the largest few

Allegan County 13 ZIP codes
Allegan, Dorr, Douglas, Fennville, Hamilton, Hopkins, Martin, Otsego, Plainwell, Pullman, Saugatuck, Shelbyville, Wayland
Barry County 4 ZIP codes
Delton, Freeport, Hastings, Middleville
Cass County 7 ZIP codes
Cassopolis, Dowagiac, Edwardsburg, Jones, Marcellus, Union, Vandalia
Clinton County 9 ZIP codes
Bath, DeWitt, Eagle, Elsie, Fowler, Maple Rapids, Ovid, Saint Johns, Westphalia
Eaton County 10 ZIP codes
Bellevue, Charlotte, Dimondale, Eaton Rapids, Grand Ledge, Mulliken, Olivet, Potterville, Sunfield, Vermontville
Genesee County 9 ZIP codes
Grand Blanc, Atlas, Burton, Fenton, Gaines, Goodrich, Linden, Swartz Creek
Ionia County 12 ZIP codes
Belding, Clarksville, Hubbardston, Ionia, Lake Odessa, Lyons, Muir, Orleans, Palo, Pewamo, Portland, Saranac
Jackson County 16 ZIP codes
Jackson, Brooklyn, Clarklake, Concord, Grass Lake, Hanover, Horton, Michigan Center, Munith, Napoleon, Norvell, Pleasant Lake, Spring Arbor
Kalamazoo County 5 ZIP codes
Portage, Scotts, Vicksburg
Lapeer County 12 ZIP codes
Almont, Attica, Clifford, Columbiaville, Dryden, Hadley, Imlay City, Lapeer, Metamora, North Branch, Otter Lake, Silverwood
Livingston County 12 ZIP codes
Howell, Brighton, Cohoctah, Fowlerville, Gregory, Hamburg, Hartland, Lakeland, Pinckney
Monroe County 17 ZIP codes
Monroe, Carleton, Dundee, Erie, Ida, La Salle, Lambertville, Luna Pier, Maybee, Milan, Newport, Ottawa Lake, Petersburg and 3 more
Montcalm County 4 ZIP codes
Greenville, Howard City, Lakeview, Pierson
Muskegon County 10 ZIP codes
Muskegon, Bailey, Casnovia, Fruitport, Holton, Ravenna, Twin Lake
Newaygo County 5 ZIP codes
Brohman, Fremont, Grant, Newaygo, White Cloud
Ottawa County 13 ZIP codes
Holland, Allendale, Conklin, Coopersville, Grand Haven, Hudsonville, Jenison, Marne, Nunica, Spring Lake, West Olive, Zeeland
Presque Isle County 1 ZIP code
Rogers City
Shiawassee County 12 ZIP codes
Bancroft, Byron, Corunna, Durand, Henderson, Laingsburg, Lennon, Morrice, New Lothrop, Owosso, Perry, Vernon
St. Joseph County 5 ZIP codes
Centreville, Constantine, Sturgis, Three Rivers, White Pigeon
Van Buren County 11 ZIP codes
Bangor, Covert, Decatur, Grand Junction, Hartford, Lacota, Lawrence, Lawton, Mattawan, Paw Paw, South Haven
Washtenaw County 17 ZIP codes
Ann Arbor, Ypsilanti, Chelsea, Dexter, Manchester, Saline, Whitmore Lake, Whittaker, Willis

7 more Michigan counties are inside the coverage area and are not listed here. If your ZIP code is in Michigan, the call reaches a contractor.

What that coverage looks like

We cover 521 ZIP codes in Michigan across 28 counties, Oakland County accounting for 84 of them. What is under the floor varies with all of that: a slab in one county and a basement in the next, and the same symptom means a different job in each.

How a slab leak repair job goes

A slab leak is located first and repaired second, and the second decision is between rerouting the run overhead and breaking the floor to reach it. Rerouting leaves the floor intact and abandons the old line in place; breaking through is the shorter job where the leak is near an edge and the floor covering is replaceable. Both are reasonable; they are not interchangeable.

What the call asks about slab leak repair

Whether there is a warm patch on the floor, or the sound of water with everything off.
Whether the meter moves with the house shut off at the main.
What the floor is — tile, carpet, wood, polished concrete — because it decides the cost of reaching the pipe.

Every Michigan city we route in

185 cities, ordered by the share of housing that is detached houses. Slab construction and building density move together, and a slab is what makes a leak expensive. Each page carries that city’s own numbers and the ZIP codes we route there.

Before you call

A slab leak is either rerouted overhead or reached through the floor, and the choice is made before anything is broken. The pages above set out both.

Drainage pipework laid out on a sub-base before the concrete is poured

Pipe emerging from a hole cut in a stone wall