The Homeowner’s Guide to Remodeling, Additions and Custom Homes in Southeast Wisconsin

By Jim Hembrook, Owner of Elite Improvements LLC, a BBB-accredited, NARI-certified remodeling and general contracting company in Lake Geneva, Wisconsin. Last updated November 2026.

The projects that go well share three things: a written scope before anyone swings a hammer, a licensed and insured contractor who pulls the permits, and a budget with a 10–15% cushion for surprises. Almost every horror story we hear breaks one of those three rules.

This guide is for homeowners in Walworth, Racine, Kenosha and Waukesha Counties who are planning interior or exterior remodeling, a home addition, or a custom home. It covers what things cost, how long they take, which permits you need, and how to pick a contractor you won’t regret hiring.

Should I remodel, build an addition, build new, or move?

Remodel when the home’s size and location work but the layout or finishes don’t. Add on when you need more square footage and love where you live. Build new when the house fights you on every front, or when you own the lot you’ve always wanted. Move when the neighborhood, school district or commute is the real problem, because no contractor can fix those.

A quick gut check: if your planned project costs more than about a third of the home’s current value, get a realtor’s opinion on what the finished home would sell for. Over-improving for the neighborhood is fine if you plan to stay 10+ years. It’s a costly mistake if you plan to sell in three.

How much does a remodel, addition or custom home cost in Southeast Wisconsin?

Cost depends mostly on three things: square footage, how much plumbing, electrical and structure moves, and the finishes you choose. The ranges below come from projects we’ve completed in Walworth, Racine, Kenosha and Waukesha Counties. They are starting points for planning, not quotes. For a closer number, try our cost estimator or read the pricing page.

Build in a contingency. Set aside 10–15% of the project cost for surprises, and closer to 20% in homes built before 1950. Opening walls in older homes regularly reveals rot, knob-and-tube wiring, or past work that wasn’t done to code.

Know what’s in the number. A low bid usually means something is missing: permits, dumpsters, demolition, trim, or allowances set too low to buy anything real. Compare bids line by line, not by the bottom number.

Allowances deserve scrutiny. An allowance is a placeholder budget for items you pick later, like tile or light fixtures. If a bid shows a $3-per-square-foot tile allowance and you want $12 tile, that bid is not really cheaper.

Financing options include cash, a home equity line of credit (HELOC), a cash-out refinance, a construction loan (common for additions and new homes), or contractor-arranged financing. Elite Improvements offers customer financing through Houzz Pro. Talk to your lender before you sign a contract, not after.

How do I choose a remodeling contractor in Wisconsin?

Hire a contractor who holds Wisconsin dwelling contractor credentials, carries general liability and workers’ compensation insurance, gives you a detailed written contract, and can show you finished projects near you. Verify all four yourself; don’t take anyone’s word for it, including ours.

Check these before you sign:

• Wisconsin Dwelling Contractor credentials, verifiable through the Department of Safety and Professional Services (DSPS) license lookup
• Certificate of insurance sent to you directly from their insurance agent
• Better Business Bureau rating and complaint history
• Industry certifications such as NARI or manufacturer certifications for the products they install
• EPA Lead-Safe Certified firm status if your home was built before 1978
• Three references from jobs in the last two years, and at least one you can see in person
• A written contract with a detailed scope, payment schedule, start and completion estimates, and change-order process

Questions worth asking every contractor:

1. Who will be on my job every day, and who is my single point of contact?
2. Do you use your own crews, subcontractors, or both? Are the subs licensed and insured?
3. How do you handle change orders and price changes?
4. How often will I get updates, and in what form?
5. What warranty do you give on labor, and who handles manufacturer warranties?
6. Who pulls the permits?

Red flags:

• Asks for a large cash deposit up front, or payment in cash only
• Asks you to pull the permits as the homeowner
• Has no physical business address
• Gives a verbal estimate or a one-line bid with no scope
• Pressures you to sign today for a “special price”
• Shows up after a storm, unsolicited, offering to fix your roof

About lien waivers: in Wisconsin, subcontractors and suppliers can place a lien on your home if they aren’t paid, even if you paid your contractor. Ask for lien waivers with each payment. A reputable contractor will provide them without argument.

Do I need a permit to remodel my home in Wisconsin?

Yes, for most projects beyond cosmetic updates. Structural changes, additions, new electrical circuits, plumbing changes, HVAC work, decks, and roof or siding replacement usually require a permit from your city, village, town or county. Painting, new countertops and like-for-like fixture swaps usually don’t. Rules vary by municipality, so always check before work starts.

What governs homes in Wisconsin:

• The Uniform Dwelling Code (UDC) is the statewide building code for one- and two-family homes. Additions and new homes are built to it.
• Local zoning sets setbacks, height limits and lot coverage. This is where most addition plans run into trouble.
• Shoreland zoning applies to properties near lakes and rivers, which covers a lot of homes around Geneva Lake, Delavan Lake, Lake Como and the rest of our lakes. It can limit additions, impervious surfaces, decks and tree removal. Expect extra review time.
• Frost depth: footings for additions, decks and new homes must sit below the frost line. In our area that is typically 48 inches. Your building inspector will confirm the local requirement.
• Lead-safe rules: homes built before 1978 may contain lead paint. Federal EPA rules require certified, lead-safe work practices for renovation that disturbs painted surfaces.

Who pulls the permit? Your contractor should. In Wisconsin, a contractor needs state credentials to obtain building permits for dwellings. If a contractor asks you to pull the permit, it often means they lack credentials or don’t want their name on the work.

Why permits protect you: inspections catch problems while they’re still visible. Unpermitted work can complicate a home sale, void insurance claims, and force you to open finished walls later.

Interior remodeling: kitchens, bathrooms, basements and flooring

The interior projects that hold their value best are the ones done right beneath the surface: level floors, proper waterproofing, and electrical and plumbing brought up to code. Finishes get the attention, but what’s behind them decides whether the remodel lasts 5 years or 50.

Kitchen remodeling

Decide early whether you’re keeping the layout or changing it. Keeping sink, range and refrigerator locations saves real money, while moving plumbing, gas or walls adds cost and time. Order cabinets early, since lead times often run several weeks and set the whole schedule. Plan lighting in layers: ceiling, under-cabinet and task lighting over the island and sink. See our kitchen remodeling page for recent projects.

Bathroom remodeling

Waterproofing is the part you never see and the part that matters most. A tiled shower needs a continuous waterproofing system behind the tile, not just tile and grout over drywall. Curbless (zero-entry) showers look clean and help you age in place, but the floor has to be recessed or built up to slope properly. Plan for an exhaust fan vented outside, not into the attic. See bathroom remodeling.

Basement finishing

Fix moisture before you finish anything. Check for water marks, efflorescence (white mineral deposits) and musty smells, and correct grading or gutters first. If the basement will have a bedroom, Wisconsin code requires an egress window or door. Use moisture-tolerant materials near the floor, and insulate exterior walls correctly to prevent condensation.

Flooring

Flooring is only as good as the subfloor under it. Luxury vinyl plank, tile and hardwood all need a flat, solid base. Skipping floor leveling is the most common reason new floors click, crack, or separate within a year. Ask your contractor how they check and correct flatness before installing.

Aging in place

If you plan to stay long-term, a few choices now save a major remodel later: a curbless shower, blocking in walls for future grab bars, wider doorways, lever handles, and a first-floor bedroom option.

Exterior remodeling: siding, roofing, windows and decks

In Wisconsin, your home’s exterior is a weather system first and a look second. Freeze-thaw cycles, ice dams and wind-driven rain punish shortcuts. The best exterior work manages water at every layer, from the roof down to the grade. See our exteriors page.

Siding

Modern siding choices include vinyl, engineered wood such as LP SmartSide, and fiber cement. Engineered wood and fiber cement offer a more traditional look and stand up well to impact. Whatever you choose, the weather-resistive barrier and flashing around windows and doors matter more than the siding itself. Siding replacement is also the cheapest moment to add exterior insulation.

Roofing

A roof replacement should include ice-and-water shield along the eaves and in valleys, which is essential against ice dams here. It should also include proper attic ventilation and new flashing at chimneys and walls. Ask whether the price includes replacing damaged roof decking, and at what cost per sheet.

Windows and doors

You’ll choose between insert replacement, which fits inside the existing frame, and full-frame replacement, which removes everything to the rough opening. Full-frame costs more but lets the installer find and fix hidden rot and air leaks. In our climate, look for ENERGY STAR ratings for the Northern zone.

Decks and outdoor living

Composite and PVC decking cost more up front but skip the yearly staining. Deck footings must go below frost depth, and the ledger board attached to the house must be properly flashed and fastened. Failed ledgers are the leading cause of deck collapses. Lakefront properties may face shoreland rules on deck size and placement.

Exterior facelifts

Bundling siding, roofing, windows and trim into one project often costs less than doing them separately over several years. One crew coordinates the flashing details between them, and you get one consistent look.

Home additions: what to know before you add on

A good addition looks like it was always part of the house. That takes design work up front: matching rooflines, siding, window styles and floor heights, and planning how heating, cooling and electrical service will handle the extra load.

Common types of additions:

• Bump-out: a small extension of an existing room, often a kitchen or bathroom
• Room or wing addition: a new bedroom suite, family room or mudroom on its own foundation
• Second-story addition: building up instead of out, which saves lot space but requires checking that the existing foundation and framing can carry the load
• Garage addition, or a room over the garage
• Sunroom or four-season room

Questions to settle first:

1. Will zoning allow it? Check setbacks, lot coverage and, near the lakes, shoreland rules before paying for full plans.
2. Can your systems handle it? Furnace, AC, water heater, electrical panel, and well and septic (if you have them) may need upgrades. A larger home can also trigger septic review in some counties.
3. What foundation does it need? Full basement, crawlspace and slab-on-grade each carry different costs and uses.
4. How will it tie in? The roof connection is where additions leak if it’s done poorly.

Design-build saves headaches. When one company handles design and construction, the plans are priced as they’re drawn. Separate architect-then-bid projects often produce plans that come in well over budget. See whole-home remodeling and additions.

Building a custom home in Southeast Wisconsin

Building a custom home starts with the lot, not the floor plan. The land decides your foundation, your utilities, your setbacks and a large share of your budget. Get the lot evaluated before you fall in love with a design. Our Powers Lake build started as a remodel and became a new home once the lot and zoning were understood.

Lot questions to answer first:

• Is there municipal water and sewer, or will you need a well and a private septic system? Septic requires a soil test, and soil results can limit where the house sits.
• How much grading, tree clearing and driveway work does the site need?
• Where do electric, gas and internet service reach the lot, and what will it cost to bring them in?
• Are there wetlands, floodplain or shoreland restrictions?
• What do subdivision covenants or HOA rules require?

The custom home process, in order:

1. Budget and financing: get pre-approved for a construction loan
2. Lot evaluation, survey and soil testing
3. Design and engineering
4. Detailed pricing and selections
5. Permits and approvals
6. Site work and foundation
7. Framing, roofing and windows (the house is “dried in”)
8. Rough plumbing, electrical and HVAC, then inspections
9. Insulation, drywall and interior finishes
10. Final inspections, occupancy permit and final walkthrough

Make most selections before construction starts. Cabinets, flooring, tile, fixtures and appliances chosen mid-build are the top cause of delays and budget overruns on custom homes. See custom homes.

What does the remodeling process look like, and how long does it take?

A well-run project follows a clear sequence, and most delays come from decisions made late, not from the construction itself. Here’s how we run every project at Elite Improvements (more on our process):

1. Pre-construction planning meeting: we walk the home, talk through goals and budget, and spot problems early.
2. Written scope and proposal: every item, material and allowance is spelled out, so you know exactly what you’re paying for.
3. Dedicated project manager: one person owns your job and is your point of contact from start to finish.
4. Phased milestone schedule: the work is broken into phases with target dates, and payments are tied to completed milestones.
5. Weekly client updates: you hear from us every week about what got done, what’s next and any decisions we need from you.
6. Final walkthrough and punch list: we walk the finished project together and fix every item before we call it done.

Living through a remodel:

• Expect dust, even with containment. Plan to clear valuables and fragile items from nearby rooms.
• For a kitchen remodel, set up a temporary kitchen with a microwave, coffee maker and fridge elsewhere in the house.
• For a bathroom remodel in a one-bath home, ask about phasing so you’re without a working toilet for as little time as possible.
• Agree on work hours, where crews park, and which bathroom they’ll use.
• Make decisions on time. A selection made late can push back every trade that follows it.

Best time to start in Wisconsin: interior projects run year-round. Exterior and foundation work is easiest from spring through fall. Plan a spring addition or new home in the winter so design and permits are done before the ground thaws, and book early, since good contractors fill their spring calendars months ahead.

Frequently asked questions

How much does a kitchen remodel cost in Southeast Wisconsin? Most kitchen remodels we complete in Southeast Wisconsin cost $50,000 to $150,000 or more. Get your own range in 30 seconds → A basic update with new cabinets, countertops and LVT flooring starts around $50,000, and a full remodel with an island starts around $85,000. Removing walls to open up the space adds $30,000 or more, and higher-end finishes add $25,000 to $30,000.

How much does a bathroom remodel cost in Southeast Wisconsin? Most bathroom remodels we complete cost $25,000 to $80,000. A refresh with a stone-look shower surround, new shower base, new mixing valve and paint starts around $25,000, and a tiled shower starts around $40,000. Layout or structural changes add $20,000 or more, and custom, higher-end finishes add $10,000 to $20,000.

How much does a home addition cost in Wisconsin? Home additions typically run about $450 to $550 per square foot, so a 400 sq ft addition costs around $180,000 to $220,000. Additions cost more per square foot than a new home because crews must protect and work around your existing home and landscaping, tie the new space into the existing structure and roof, and often uncover problems in the older house that need fixing too.

How much does it cost to build a custom home in Southeast Wisconsin? Custom homes typically run about $400 per square foot before land, so a 2,500 sq ft home costs around $1,000,000. Lot preparation, well and septic, and finish level move the number most.

How far in advance should I contact a contractor? For interior remodels, reach out two to three months before you want work to start. For additions and custom homes, start six to twelve months ahead, because design, engineering and permits take time.

Should I get three bids? Getting multiple bids is reasonable, but only if each bid covers the same scope. Three bids built on three different assumptions tell you nothing. Give each contractor the same written list, or ask them to break out their pricing so you can compare line by line.

How much of a deposit is normal? A deposit that covers ordering materials and scheduling is normal. Be wary of anyone asking for most of the price before work begins. At Elite Improvements, the schedule is simple: an acceptance payment when you sign the contract, a second payment when the project starts, and the remaining payments staged by project size and tied to milestones, with the balance at completion.

Can I live in my home during a remodel? Usually, yes. Most homeowners stay through kitchen, bathroom and exterior projects. Whole-house remodels or projects that shut off water, heat or power for long stretches may make a short stay elsewhere worthwhile.

What is a change order? A change order is a written, signed agreement to change the scope, price or schedule after the contract is signed. Never agree to extra work verbally. Get the price in writing first.

Do remodels increase home value? Some do more than others. Exterior projects like siding, windows and entry doors, plus mid-range kitchen and bath updates, tend to recover more of their cost at sale than high-end luxury upgrades. If resale is your main goal, keep finishes in line with the neighborhood.

What warranty should I expect? Expect a written warranty on workmanship, plus the manufacturers’ warranties on materials. Elite Improvements warranties all workmanship, interior and exterior, for 3 years, plus the full manufacturer warranties on materials.

Do you serve my town? Elite Improvements serves homeowners across Walworth, Racine, Kenosha and Waukesha Counties, including Lake Geneva, Delavan, Genoa City, Williams Bay, Fontana, Elkhorn, Burlington and surrounding communities. See where we work.

Ready to talk about your project?

The best time to call a contractor is before you’ve committed to a plan, while changes cost nothing but a conversation. We’ll walk your home, listen to what you want, and tell you plainly what it will take, including when a project isn’t worth doing.

Start the conversation   or call 262-716-6663, answered 24 hours a day.

Built once, built right, built for generations. Elite Improvements.

Built once, built right, built for generations. Elite Improvements.