Home Remodeling Cost in Merton, WI
A whole-home remodel costs about $15 to $150 per square foot in This Old House's 2026 guide, with $60 per square foot as the mid-range for a comprehensive renovation with moderate-quality materials, or about $120,000 for a 2,000-square-foot home. In Merton, two local rules can shape the budget and the schedule before any work starts: a home within 1,000 feet of a lake or 300 feet of a river or stream is in shoreland jurisdiction and may need a Waukesha County zoning permit, and a home on a private septic system needs a county Preliminary Site Evaluation before a zoning or building permit is issued.
Published 2026-10-28 · 6 min read · 1,285 words
Remodel project - T&JHere is how a multi-room remodel adds up, what pushes a Merton project higher, and how permits work in the Town and the Village of Merton.
Whole-Home Remodel Cost by Home Size
| Home size | Basic (about $15/sq ft) | Mid-range ($60/sq ft) | High-end (about $150/sq ft) |
|---|---|---|---|
| 1,500 sq ft | $22,500 | $90,000 | $225,000 |
| 2,000 sq ft | $30,000 | $120,000 | $300,000 |
| 2,500 sq ft | $37,500 | $150,000 | $375,000 |
These are This Old House's 2026 figures, based on estimates collected from a national home services marketplace. The basic column covers cosmetic updates; the high-end column assumes top-tier materials, higher-end finishes and possible structural changes.
This Old House puts permits for a home renovation at $500 to $2,500, a small share of the budget but one that sets the start date when a county zoning permit has to come first.
Room by Room
Most whole-home remodels are several room projects done together. Nationally, This Old House puts a kitchen renovation at $14,550 to $40,400 and a bathroom at $6,600 to $28,000. Add up the rooms you plan to do, then the shared costs below, for a more realistic total. For the bathroom side in Merton, see our guide to bathroom remodel cost in Merton; for a neighboring community's numbers, see home remodeling cost in Hartland.
Remodel - T&JWhat Pushes a Merton Remodel Higher
Finish level.
Cabinets, counters, flooring, tile and windows are where budgets swing most.
Structural changes.
Removing walls, enlarging openings or reworking stairs may need engineering or architectural plans.
Shoreland rules.
Lake and river lots fall under Waukesha County's shoreland jurisdiction, which limits expansions and hard surfaces close to the water; see our guide to remodeling a lake home under shoreland zoning.
Septic and well.
On a private septic system, the county's Preliminary Site Evaluation checks that the system works and the setbacks are kept before permits are issued. Adding bedrooms or bathrooms can raise questions about the system's capacity, so ask early.
Whole-house systems.
Updating the electrical service, plumbing or heating across the house adds cost a single-room project avoids.
Living arrangements.
Large projects can mean moving out for part of the work; see our guide to the cost of moving out during a home remodel.
Permits for a Whole-Home Remodel in Merton
Merton has two local governments, the Town of Merton and the Village of Merton. Confirm which one your address is in first.
Town of Merton.
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John walks your space, measures it, and leaves a written itemized estimate. No cost, no obligation, no sales script.
- The town's building inspector handles building permits and inspections for new and existing structures.
- Building permit applications are submitted at the Town Hall in person or by mail, with the electrical, plumbing and HVAC permit applications submitted alongside them when the work needs them.
- Properties within 1,000 feet of a lake or 300 feet of a river or stream are in shoreland jurisdiction; the town directs owners to Waukesha County Parks and Land Use to find out whether a zoning permit is required.
- Homes on a private septic system need a Preliminary Site Evaluation from Waukesha County's Environmental Health Division before a zoning or building permit is issued.
- Inspections are scheduled by phone, not by email or text.
Village of Merton. The village handles its own permits; ask its office what your project needs.
On a lake lot or a septic home, the county steps come before the building permit. Start them while the design is being drawn, not after, or they become the delay.
One Project or Several?
Doing several rooms at once usually saves on set-up, permits and repeated mobilization, and lets one contractor plan the wiring and plumbing for the whole house. Phasing spreads the cost over time and keeps more of the house livable. A practical middle path is to do rooms that share plumbing or walls together, such as a kitchen and the bathroom behind it, and leave stand-alone rooms for later. Our whole-house remodel budget guide walks through setting a total and a contingency.
Remodel - T&JQuestions to Ask Before You Compare Bids
Is every room scoped the same way
in each bid, with allowances for cabinets, tile, fixtures and flooring listed?
Who handles the county zoning permit, the septic evaluation and the town or village permits?
What happens when walls open
and something unexpected turns up, and how are changes priced?
What is the schedule,
room by room, and which rooms stay usable during the work?
Who is on site every day,
and who is your single point of contact?
Getting a Whole-Home Estimate in Merton
A free in-home consultation walks through every room you want to change, checks the shoreland and septic questions for your lot, and prices the project in writing, room by room, so you can decide what to do now and what can wait.
T&J is a father-and-son team that has worked in Wisconsin since 1989. John is your single point of contact from the first call through the final walkthrough, Telli is on site running the work, and T&J gives a written 2-year warranty. Homeowners in Merton, Hartland, Sussex and across Waukesha County can see our home remodeling services or request a free in-home estimate.
Frequently asked questions
How much does a whole-home remodel cost in Merton?
This Old House's 2026 national range is $15 to $150 per square foot, with $60 per square foot as the mid-range, or about $120,000 for a 2,000-square-foot home. Finishes, structural changes and lake-lot rules push a project higher.
Who issues building permits in Merton?
It depends on where you live. In the Town of Merton, the town's building inspector issues permits, submitted at the Town Hall. The Village of Merton handles its own permits.
Do I need a zoning permit to remodel near a lake in Merton?
Possibly. Properties within 1,000 feet of a lake or 300 feet of a river or stream are in shoreland jurisdiction, and the Town of Merton directs owners to Waukesha County Parks and Land Use to check.
What is a Preliminary Site Evaluation?
A Waukesha County Environmental Health check, required in the Town of Merton before a zoning or building permit for a home on a private septic system, to confirm the system works and the setbacks are met.
How much do permits cost for a home remodel?
This Old House puts home renovation permits at $500 to $2,500; your actual fees depend on the scope and the issuing office.
Is it cheaper to remodel the whole house at once?
Often, because one project shares the set-up, permits and planning. Phasing costs more overall but spreads the spending out.
How much does a kitchen and bathroom remodel cost together?
Nationally, a kitchen renovation runs $14,550 to $40,400 and a bathroom $6,600 to $28,000.
Pricing is based on our own recent projects. Written by John (PM, 14 yrs) and reviewed by Telli, who has been remodeling in Wisconsin since 1989. Published 2026-10-28.
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