Columbus, OH
Two adopted codes, five years apart, on the same city's own published list
Columbus's own contractor guidance lists the 2024 Ohio Building Code for commercial and larger multifamily work, and the 2019 Residential Code of Ohio, based on the 2018 IRC, for one, two, and three family homes. Both editions govern real Columbus construction today. A supplement that cites the wrong one names the wrong authority for the structure, whichever direction the mismatch runs.
By Kyle Hamrick, Founder
A Dublin single-family re-roof and a Short North mixed-use rebuild do not answer to the same adopted code, even though both permits get pulled inside the same city limits. Each file gets matched to the correct document before anything goes in writing, not assumed from the address alone.
The Estimate Company is run by a licensed independent insurance adjuster, with claims experience across many states, writing for contractors nationwide. What we bring to a Columbus file is code mechanism, carrier behavior, and claim pattern, confirmed for the address rather than assumed from a statewide rule. More about Kyle.
What actually shapes a Columbus roof file, and why the code shelf matters to it
One city, two adopted editions, and a five-year gap between them
The City of Columbus publishes its own contractor-facing list of adopted codes, and that list runs two documents side by side rather than one. Commercial construction and residential buildings of four families or greater fall under the 2024 Ohio Building Code, adopted effective March 1, 2024. One, two, and three family homes, the housing stock behind most residential roofing claims in this city, fall under the 2019 Residential Code of Ohio instead, itself based on the 2018 International Residential Code. Both documents are genuinely in force in Columbus today. Neither one is Columbus's code in a singular sense, and treating either edition as the default for every structure in the city gets a real share of files wrong.
That gap matters past the abstract. A supplement citing a 2024 OBC provision against a single-family tear-off in Clintonville or Hilliard has cited a document that does not govern that structure, and a carrier reviewer who catches the mismatch has a clean, defensible reason to reject the whole line without engaging its substance at all. The fix is naming the correct shelf, by edition, before the citation goes in.
Growth-corridor scale in Delaware County and outer Franklin County
Dublin, Powell, Lewis Center, New Albany, Hilliard, and Grove City have added residential construction fast enough that a real share of the roofs on a given block are recent rather than decades old, which removes most of the code-upgrade argument an older neighborhood carries by default. What takes its place is scale: larger footprints, permit sequencing across several inspections, HOA design review in many of these communities, and multiple crews scheduled against one another on the same job. That coordination is a general contractor function, priced by the coordination requirement itself rather than by how many upgrade line items an older roof happens to need.
The city's older inner neighborhoods carry housing built well before the fastening, ventilation, and drip-edge expectations the current residential code sets, and a permitted replacement on that stock has to meet the 2019 Residential Code of Ohio specifically, not a general appeal to Ohio building requirements. Naming the actual document, rather than gesturing at code in the abstract, is what lets the argument survive a reviewer who already knows Columbus runs two separate shelves.
Two shelves, one city, and the question each file has to answer first
Which shelf the structure sits on is answered before the code is opened
Columbus's own published list draws the line by building class, not by neighborhood or by age. A one, two, or three family home sits on the residential shelf regardless of when it was built, and a commercial building or a four-family- or-greater structure sits on the other, regardless of where in the city it stands. Verify with local building dept Confirm the building class against that published list before pulling a provision from either document.
The residential edition is five years behind the commercial one, and that gap is real
The 2019 Residential Code of Ohio and the 2024 Ohio Building Code were not adopted on the same schedule, and a provision that changed between the 2018 IRC cycle and the current commercial edition may not exist, or may read differently, on the residential document that actually governs a single-family re-roof. Verify with local building dept Pull the provision from the edition that governs the specific structure, not from whichever document is more recent.
Where patching stops being an option
Neither shelf lets patchwork continue forever. Once the damaged area crosses the threshold that document sets, the whole covering owes the edition that document currently enforces. Which number applies and which edition it points to both trace back to whichever of the two Columbus documents actually governs that structure, a lookup pulled fresh for the specific building in front of the crew, never carried forward from an unrelated permit.
The carriers writing Columbus, including the one headquartered here
Nationwide Mutual Insurance traces to an Ohio Farm Bureau initiative chartered in 1926 and has kept its home office in Columbus ever since. State Farm, Allstate, Westfield Insurance, Erie Insurance, Progressive, and American Family all carry meaningful residential presence in the metro alongside it. Naming where Nationwide's headquarters sits is a fact about the company's history, not a claim that Columbus claims get handled any differently than the same carrier's claims anywhere else.
The recurring default on a Columbus file quotes one code document for the entire metro without asking which of the two adopted shelves the structure in question actually falls under, and separately prices a large Delaware County new-construction job off a template built for a plain single-family gable, missing the coordination load and the waste factor that job specifically carries. Either gap quietly shrinks an otherwise legitimate claim. Where age or roof condition already reduced the payout, depreciation recovery takes that question up on its own, in its own filing.
When a large storm system crosses central Ohio and puts a run of claims into the system at once, catastrophe staff answer to a volume target rather than a jurisdiction map, and sorting out which of Columbus's two code documents applies to a given roof is not high on that list. The reinspection supplement takes over on a file that stalled out that way, with the correct shelf already sorted out before anyone gets back up on the roof.
What gets recovered on a Columbus roof file
Ordered by how often the item is missing when a file reaches our desk.
Status key: In scope. Usually omitted. Code driven. Verify with the authority having jurisdiction. Every status is spelled out in words beside the item, so nothing depends on color.
Correct code shelf named before any provision is cited
Verify with local building dept
Columbus's own contractor guidance runs two adopted documents side by side: the 2024 Ohio Building Code for commercial and four-family-and-greater work, and the 2019 Residential Code of Ohio for one, two, and three family homes. A citation pulled from the wrong shelf names the wrong authority for the structure, which is an easy way to hand a reviewer a clean reason to reject an otherwise sound line.
Residential re-roof scoped to the 2019 RCO specifically, not a general reference to Ohio code
Code driven
The single-family and duplex stock across most Columbus neighborhoods answers to the 2019 Residential Code of Ohio, itself based on the 2018 IRC, and naming that document by its edition rather than gesturing at Ohio code in general is the difference between a citation that survives review and one that reads as filler.
Attic ventilation corrected to the current RCO requirement for that address
Verify with local building dept
A large number of homes in Columbus's older inner ring went up with far less intake and exhaust than the current residential document expects, and the gap between what exists and what the code wants has to be worked out one attic at a time rather than pulled from a citywide rule of thumb.
Ice barrier membrane at eaves on pre-membrane-era housing
Code driven
Warm-field meltwater turning back to ice above a cold overhang is what the eave membrane is built to stop, and on Columbus's older neighborhoods the tear off routinely uncovers an eave that predates the requirement entirely, whichever of the two code shelves the parcel happens to sit on.
Drip edge at eaves and rakes on pre-drip-edge-era housing
Code driven
Metal edge protection at the eave and rake became standard practice well after a lot of Columbus's housing was already built, so the tear off on that stock turns up raw wood on both edges instead of an old line to match. A price list keyed to a driveway view has no reason to flag metal that was simply never there.
Sheathing replacement and renailing to the adopted schedule
Verify with local building dept
Older Columbus roofs sitting on board decking give a modern nailing pattern nothing solid to grip, and that shortfall stays hidden under the shingles until the crew has already pulled them, at which point it is a supplement question rather than something the original estimate could have caught.
General contractor overhead and profit on Delaware County and outer Franklin County new construction
In scope
Homes in Dublin, Powell, Lewis Center, and New Albany routinely carry permit sequencing, HOA design review, and several crews working the same address at once, and paying for that coordination is a general contractor function tied to how many parties have to be scheduled, not to the roof's total price tag.
Waste factor on complex new-construction rooflines priced past a flat squares count
Usually omitted
The growth-corridor housing stock leans on hips, valleys, and architectural detail well beyond a plain gable, and a squares number pulled without accounting for that shape leaves the actual cutting and material loss unpriced.
Whole roof replacement triggered by the repair limits
Verify with local building dept
A roof can only be patched so far before the exemption runs out and the full covering has to meet the edition currently in force for that building class. Since Columbus runs two separate shelves, the trigger and the governing edition both hinge on which document applies to that structure, a question worked out fresh for each roof instead of carried over from the last file.
Starter course at eaves and rakes
Usually omitted
Starter is priced and fastened as its own product, distinct from the field course above it, and merging the two lines on an estimate is a quiet way to strip the wind warranty the shingle manufacturer actually offers.
Ridge assembly: the cut, the vent, and the cap over it, priced as three operations
Usually omitted
Opening the ridge slot, seating the vent, and laying cap over the top of both come out of the same labor pool but they are three different jobs, and a price list that folds all three into the field-shingle rate leaves most of that work with no funding behind it at all.
Chimney flashing, counterflashing, and masonry repointing on older stock
Usually omitted
Masonry chimneys are a fixture on Columbus's older stock, and the freeze-thaw cycle typically opens the counterflashing joint and works loose the mortar bed under it long before the shingle field wears out, a failure a field-only inspection has no reason to catch.
Each becomes a written line with a reason attached, inside a real Xactimate file. Depending on the claim it ships as a roofing supplement, an Xactimate supplement package, a supplemental estimate, or a full claim estimate written from scratch.
What happens to your file after you send it
- 01
Which code shelf the structure falls under is settled first, before anything else
Your Columbus file gets weighed against your own photos and measurements first, and then against the building class question: is this a one, two, or three family home under the 2019 Residential Code of Ohio, or a commercial or larger-multifamily structure under the 2024 Ohio Building Code. That answer decides which document any citation can legally come from.
- 02
Growth-corridor scale and older-stock condition get priced on their own terms
On Delaware County and outer Franklin County new construction, we document the coordination and waste-factor case rather than a code-age case. On older Columbus neighborhoods, we confirm the specific RCO provision the structure has to meet and document the deficiency against it.
- 03
The supplement is written in Xactimate and delivered as a PDF
Real file, real price list, real sketch. You get the PDF as the deliverable, and the ESX free any time you ask for it. Written same day or next day, submitted next day. One to three extra days on large commercial and multi structure work.
- 04
We stay on the file until the carrier answers
Follow up, desk adjuster calls, and reinspection support when the carrier sends someone back out. Silence on their end is not a reason to close the file on ours.
Two promises, stated separately
Promise one: the fee
The standard fee is 15 percent of supplemental recovery. If a file produces no additional approved recovery, you pay nothing on that claim. That is the whole fee structure, and it applies claim by claim.
Promise two: the guarantee
Send us an average of 2 claims per week for 12 months. If that volume does not produce a minimum of six figures in additional margin for your company, we write you a $5,000 check at the end of the 12 months. The volume, the 12 month term, the six figure threshold, and the $5,000 figure are one set of terms and they always travel together.
Two different promises, no overlap. The fee describes what a single claim costs you. The guarantee describes what a year of steady volume is worth. Nothing in the fee structure is a guarantee, and the guarantee does not change the fee.
Columbus questions we get from contractors
Does Columbus run one building code or two?
Two, and the split runs by building class rather than by neighborhood. The City of Columbus's own contractor guidance lists the 2024 Ohio Building Code, effective March 1, 2024, as the governing document for commercial work and residential buildings of four families or greater. For one, two, and three family homes, the same page lists the 2019 Residential Code of Ohio, based on the 2018 International Residential Code, as the governing document instead. Those are five years apart, on the same published list, for the same city.
Why does the code edition on a Columbus roof supplement matter this much?
Because citing the wrong shelf cites the wrong document, and a carrier reviewer who catches that mismatch has a clean reason to reject the whole line rather than argue the merits of it. A single-family Columbus re-roof falls under the 2019 Residential Code of Ohio, not the 2024 Ohio Building Code that governs the commercial and larger-multifamily stock on the same city list. Pulling a provision from the newer commercial document and applying it to a Dublin or Clintonville single-family tear-off names the wrong authority for that structure, even though both documents sit on the same city page and both are genuinely in force somewhere in Columbus.
What does Delaware County and outer Franklin County new construction change about a supplement?
It shifts the argument away from age and toward scale and coordination. Dublin, Powell, Lewis Center, New Albany, Hilliard, and Grove City have added residential construction quickly enough that the housing on a given block can be recent rather than decades old, which removes most of the code-upgrade argument an older neighborhood carries. What replaces it is job scale: larger footprints, permit sequencing, HOA design review in many of these communities, and multiple crews scheduled against each other on the same roof, all of which is a general contractor coordination question rather than a code-age question.
What does Columbus's older housing on the near east and south sides change about a supplement?
It restores the code-upgrade argument the newer suburbs do not carry, and it puts that argument squarely on the residential shelf rather than the commercial one. Housing in Columbus's older inner neighborhoods generally predates the fastening, ventilation, and drip-edge expectations the current Residential Code of Ohio sets for a one, two, or three family re-roof, and a permitted replacement on that stock has to answer to the 2019 RCO specifically, named as that document rather than gestured at as a general building-code requirement.
What does a Columbus roof supplement typically recover?
On claims where the roof is already approved for full replacement, our own closed files show a median recovery of about $4,000, with half landing between roughly $1,800 and $9,500. Claims that start denied or repair-only run far higher.
How fast is turnaround, and what does it cost?
Estimates are written same day or next day and submitted next day. Larger commercial and multi structure files take one to three extra days, said up front. Carrier response runs about three weeks as a general expectation. The standard fee is 15 percent of supplemental recovery, and a file with no additional approved recovery owes nothing on that claim.
Columbus and the wider Ohio market
Columbus sits inside the wider Ohio market, with Dayton and Cincinnati each running their own market to the southwest, and Cleveland standing under Cuyahoga County's own structure to the north. Files also come in from Dublin, Westerville, Hilliard, Grove City, New Albany, Lewis Center, Powell, Reynoldsburg, Gahanna, and Pickerington, each layered onto the same city or county building department handling Franklin or Delaware County permits.
Send one Columbus file and see which shelf it actually falls under
Send along what the carrier wrote, whatever you measured on site, and the declarations page. We work out which of the two code shelves actually governs the structure, price the growth-corridor or older-stock reality on its own terms, and put a repaired scope in your hands the next business day.