Ohio & Michigan · Homes · Commercial · HOA
Roof & exterior cost calculators, built for Midwest winters.
Get an honest roof replacement range, measure gutters and siding, plan a flat-roof coating or a condo re-roof, and see every formula. No sign-up to see results.
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- Shows the math
- Results before contact info
- Built for freeze-thaw winters
- Ohio & Michigan only
Quick roof estimate
Move the sliders. Numbers update instantly.
Provisional planning range (our setting, not a quote or market average). Real prices depend on condition, access and scope.
What this estimate does and doesn't cover
- It all depends on the roof. Condition, material, pitch, number of layers, access and local code can move the price well outside this range. Treat it as a first budget number, not a price.
- Roof area is a rough guess. We turn living area into roof area using your stories, a 10% allowance for overhangs and your pitch. Garages, porches, dormers, valleys and complex shapes are not counted. A measurement report or an on-site measurement will differ.
- The dollar band is our own provisional setting, informed by published guides. It is not a verified Ohio or Michigan market average, not a contractor quote and not an offer.
- Assumes a straightforward replacement: one layer torn off, standard underlayment, ice barrier at eaves, flashing and cleanup.
- Not included: rotted decking, extra layers, framing or structural repair, major ventilation changes, chimney work, skylights, gutters, permits, steep or difficult access, and insurance-related work.
- Repairs are not priced. Leaks, storm damage and small repairs need an inspection.
- Stay off the roof. Measure from the ground or plans, and get a written proposal from a licensed, insured contractor before you decide.
See how we set ranges and our disclosures.
Photo: Tracy Adams / Unsplash
- estimates run in the last 30 days
- 25 free calculators and planning tools
- 36 city permit guides checked against official sources
- 31 guides and printable checklists
- $0 to see results. No sign-up, no email
- Real Ohio businessLocally owned and run by an Ohio resident in Canton
- Your info is never soldWe do not sell or rent personal information
- Fees disclosedAny referral or lead fee is spelled out up front
- No sign-up for resultsSee every estimate before sharing contact info
- Official sourcesCity permit guides cite the official office
- No-obligation inspectionsFree, and you decide what happens next
Start here · 30-second assessment
What does your roof need?
Answer four quick questions and get a plan: what to do first, which tools to use, and when to get an inspection.
Who it's for
Homeowners
Roof replacement, repairs, gutters, siding and windows.
Open tools →Commercial & facility managers
Flat roofs, coatings, maintenance plans and capital budgets.
Open tools →HOAs, condos & communities
Multi-building roof plans, reserves and bid packages for boards.
Open tools →Also built for
Three steps to a roof decision you won't regret
- Estimate. Get a size and a planning range in under a minute, with the math shown.
- Understand. Read what's included, what isn't, and the questions to ask every contractor.
- Verify. Get a free inspection or three comparable bids before you sign anything.
Roofing calculators
Commercial · Northwest Ohio
Commercial roof calculators and maintenance planning
Coatings, washing, debris and drain clearing, restaurant grease, inspections and replacement budgets for flat and low-slope roofs from Toledo to Findlay. Planning ranges are our provisional settings with sources on every page.
Gutters, siding, windows and more
Rules of thumb worth sharing
Every roofing proposal should state the roof area in squares. If two quotes price different sizes, you're not comparing the same job.
Ice dams usually start in the attic, not the shingles: heat escapes, melts the snow, and it refreezes at the cold eaves.
A roof coating is only an option if the roof underneath is dry. Start with a moisture survey, not a sales pitch.
Get three written bids on the same scope. A price is only comparable when the work is.
Quick poll
What worries you most about your roof this winter?
Jonathan Blake has spent five years in home exterior account management and helped hundreds of families plan exterior projects. Before that he owned a tree service for eight years. Why I built this site →
Free inspections around Toledo and Farmington Hills
Toledo area
Toledo, Sylvania, Perrysburg, Maumee, Bowling Green, Findlay, Sandusky, Monroe, Adrian, Ann Arbor and more within 60 miles.
Farmington Hills and metro Detroit
Farmington Hills, Novi, Livonia, Southfield, Troy, West Bloomfield, Detroit, Brighton, Flint and more within 60 miles.
City roofing guides
Permit rules and local notes checked city by city. See all city guides →
- Adrian, MI
- Ann Arbor, MI
- Birmingham, MI
- Bowling Green, OH
- Brighton, MI
- Canton, MI
- Dearborn, MI
- Farmington, MI
- Farmington Hills, MI
- Findlay, OH
- Fremont, OH
- Holland, OH
- Livonia, MI
- Maumee, OH
- Monroe, MI
- Northville, MI
- Northwood, OH
- Novi, MI
- Oregon, OH
- Perrysburg, OH
- Plymouth, MI
- Rochester Hills, MI
- Rossford, OH
- Royal Oak, MI
- Saline, MI
- Sandusky, OH
- Southfield, MI
- Sylvania, OH
- Toledo, OH
- Troy, MI
- Waterville, OH
- West Bloomfield, MI
- Westland, MI
- Whitehouse, OH
- Wixom, MI
- Ypsilanti, MI
Roofing in Ohio and Michigan
Freeze-thaw cycles, lake-effect snow off Lake Erie and Lake Michigan, ice dams and summer hail shape how roofs here are built and how fast they wear. Permits and code enforcement are local, so the same job can need a permit in one township and not the next. Start with the Ohio or Michigan page, look up your house on the roof size by house size chart, or read how our calculators work.
Roof cost questions from Ohio and Michigan homeowners
How much does a new roof cost in Ohio or Michigan?
It all depends on the roof: its condition, the material, the pitch and height, access, how many layers come off and what the decking looks like underneath. As a rough planning guide, figure about $500–$1,000 per square for architectural shingles; $1,000–$1,800 per square for standing-seam metal; $500–$1,200 per square for exposed-fastener metal; $500–$1,000 per square for flat or low-slope roofs (EPDM or TPO). A square is 100 sq ft of roof. These are our provisional settings, not quotes. An inspection and written proposals set the real price.
How do I figure out how big my roof is without climbing on it?
Use your house size, or the footprint from plans or a property record, plus the pitch. The roof size calculator multiplies the footprint by the slope factor for your pitch. A measurement report from a contractor or a satellite service is more exact for complex roofs.
Is the roof inspection really free?
Yes. The Free Asset Protection Inspection is done at no charge and with no obligation by our founder, Jonathan Blake, or, if you allow it, by the independent Ohio and Michigan roofing and exterior contractor he works for. You never have to hire anyone. See our disclosures for how requests are shared and how we may be paid.
Where do you offer free inspections?
Free home inspections are offered within about 60 miles of Toledo, Ohio or Farmington Hills, Michigan. Commercial buildings, churches, schools, municipal buildings, HOAs, condos and apartment communities can get an inspection anywhere in Ohio and Michigan. The planning tools work statewide either way.
Do you work with HOAs, condos and commercial buildings?
Yes. The commercial tools cover low-slope roofs, coatings, maintenance plans, five-year budgets and bid requests, and the HOA and condo page explains how boards can plan multi-building roof projects.
Do I have to give my email to see results?
No. Every calculator shows its result first. A request form only appears after your result, and it is optional.
Why are your numbers ranges instead of one price?
Because roofs vary. Hidden deck damage, the number of layers, access, pitch and product choice all move the price. A range tells you what to budget for; an inspection and written proposal set the actual price.