MI State Guide
Home improvement costs in Michigan.
Locally calibrated cost data for fifty trades, plus the permit rules, code gotchas, and building conditions that actually matter when you plan a project in Michigan.
Updated June 2026
Cost calibration
Michigan costs are about 3.5% below the national average.
Michigan trades-labor rates run close to the national average, but materials and overhead are slightly cheaper than coastal markets. The biggest single driver of project cost in Michigan is the housing stock: a lot of homes were built before 1990, which means galvanized supply lines, knob-and-tube wiring, and 60-amp panels show up regularly. Budget a 12–15% contingency on any project that opens walls.
BEA RPP
0.965×
Regional Price Parity
BLS Labor Index
0.99×
Trades-labor metro adjustment
Permits
Permits in Michigan.
Michigan permits are pulled at the county or municipal level. Most plumbing and electrical work requires a permit and a licensed trade pulling it. As a homeowner doing work on your own primary residence, you can pull permits yourself under MCL 339.5739 (plumbing) and MCL 338.881 (electrical), but you cannot pull permits as a homeowner if you intend to rent or sell the property within 12 months of completion.
Where to file: County building inspection office or the municipal building department, depending on jurisdiction. Many counties have online portals; some still require an in-person visit. Plan to file at least 2 weeks before your demo date.
| Trade | Required when | Citation | Typical fee | Homeowner DIY? |
|---|---|---|---|---|
| Plumbing | Any in-wall work, new fixtures, supply line changes | MCL 339.5739 | $75–$300 | ConditionalHomeowner-pulled on primary residence only |
| Electrical | New circuits, GFCI/AFCI upgrades, service changes, panel work | MCL 338.881 | $50–$250 | ConditionalHomeowner-pulled on primary residence only |
| Mechanical (HVAC) | Furnace, AC, ductwork replacement or new install | Michigan Mechanical Code | $60–$200 | NoLicensed mechanical contractor required |
| Building (structural) | Structural changes, additions, decks over 30in off grade, finished basements | Michigan Residential Code | $150–$600 | YesHomeowner-pulled allowed; plans review may apply |
| Roofing | Re-roofs (most jurisdictions), structural deck repair | Local jurisdiction | $75–$200 | Yes |
| Demolition | Interior demo opening walls (some jurisdictions) | Local jurisdiction | $25–$100 | Yes |
Code highlights
What catches DIYers in Michigan.
Five code rules that show up on inspector reports more than any others. Catch them before demo day.
AFCI + GFCI requirements (2017 NEC)
Michigan adopted the 2017 NEC. AFCI protection is required on virtually all 15A/20A circuits in dwelling units. GFCI is required in kitchens, baths, garages, basements, outdoors. If you are upgrading any circuit, the inspector will require these even if the rest of the panel is older.
Plumbing materials, no galvanized
Michigan plumbing code prohibits new galvanized supply lines. If your 1990s build has galvanized, replacement with PEX or copper is required during any remodel that opens those walls. Budget $400–$1,100 for a typical bathroom rough-in replacement.
Skylights and vaulted ceilings (snow + ice)
Skylights in Michigan need ice-and-water shield around the curb and proper flashing. Vaulted ceilings with insufficient insulation cause ice dams. Both are common code/practice issues in older Michigan homes during a remodel.
Frost line depth for footings
Footings for permanent structures (decks attached to the home, additions, porches) must extend below frost line. Michigan frost line ranges 42–60 inches depending on region. Skipping this is the #1 reason a homeowner-built deck fails inspection.
Bathroom ventilation
Michigan code requires exhaust fans vented to the exterior, not into the attic. Venting into the attic causes mold and is a common code violation in older builds.
Local building conditions
What changes in Michigan.
Three things shape Michigan home improvement costs more than anywhere else: frost-line depth, snow load on roofs, and an old housing stock with hidden plumbing and electrical surprises. Plan for them and your project comes in on budget.
Frost line depth
42 inches (Lower Peninsula), 48–60 inches (Upper Peninsula)
Deck footings, porch piers, and any permanent outdoor structure must extend below this depth. Skipping it means the structure heaves and fails inspection.
Snow load
40 psf (most of state), 50–70 psf (UP and northwest LP)
Roof structures, additions, and screened porches must be designed for these loads. Old roofs may fail the load calculation when you re-shingle or add solar.
Ice dams
Common on roofs with insufficient attic ventilation or insulation
Plan for ice-and-water shield extending 24 inches past the inside wall line on any re-roof. Add ridge and soffit vents during the same project.
Older housing stock
~35% of Michigan housing was built before 1970
Expect to encounter galvanized supply lines, knob-and-tube wiring, 60-amp panels, and asbestos floor tiles in pre-1980 builds. Budget 12–15% contingency for surprises.
Basement water management
High water table in southeast LP and around Saginaw Bay
Sump pumps and exterior drainage matter more in Michigan than in dry climates. Factor this into any basement remodel or finishing project.
Lead paint disclosure
Required for homes built before 1978
EPA RRP rules apply to any contractor touching painted surfaces in pre-1978 homes. Adds $300–$800 to most painting and renovation projects.
Cost data
Top home improvement projects in Michigan.
Hire-it-out cost ranges for the most-searched projects, calibrated to Michigan labor + materials.
| Project | Cost range | Difficulty |
|---|---|---|
| AC Replacement → | $4,200–$8,300 | Hard |
| Attic Insulation → | $1,400–$3,200 | Moderate |
| Backsplash Tile → | $700–$2,300 | Easy |
| Baseboard & Trim Installation → | $600–$2,800 | Easy |
| Basement Finishing → | $13,900–$46,300 | Hard |
| Bathroom Remodel → | $6,000–$16,700 | Moderate |
| Bathroom Vanity Installation → | $400–$1,400 | Moderate |
| Cabinet Refacing → | $3,700–$11,100 | Moderate |
| Carpet Installation → | $600–$2,300 | Moderate |
| Ceiling Fan Installation → | $100–$600 | Moderate |
Need a specific project priced for your zip? Open the calculator →
Local contractors
Michigan Local Pros.
Michigan is our first state for the editorial Local Pros directory. We are sourcing from r/HomeImprovement Michigan threads, NextDoor neighborhood recommendations, and county licensing records. First contractors go live with the Phase 2 launch.
See Michigan Local Pros →Plan your Michigan project