A $10,000 gap between two roofing quotes almost always comes from one of three places: the quotes are for different materials entirely (asphalt versus metal, for example), one quote is missing scope the other includes (thinner ice and water shield, no decking allowance, reused flashing), or one company simply carries more overhead than the other. Line up eight specific items side by side and you can tell which one it is before you sign anything.
I am Aaron Scott, licensed Michigan residential builder and owner of Roofing Army. On our own calls this year, 176 involve a homeowner comparing several bids, and 22 of those ask specifically why one bid landed thousands of dollars apart from another. It is a fair question, and the honest answer is that a big gap is not automatically a red flag or automatically a bargain. It depends on what each number is actually buying.
Why Are Roofing Quotes for the Same House So Different?
Two contractors standing on the same roof can walk away with very different numbers for reasons that have nothing to do with one of them trying to cheat you. The three most common:
- Different material tier. An architectural asphalt shingle quote and a metal roofing quote for the same house are not the same product, and the gap between them can be enormous. Across the quotes we write, when a homeowner is shown both asphalt and metal options on the same roof, the spread between the cheapest and priciest option is 100% or more a quarter of the time.
- Different scope. One quote may include full tear-off, a written per-sheet price for rotted decking, 6 feet of ice and water shield, and new flashing everywhere. Another may assume the existing decking is fine, install the code-minimum ice barrier, and reuse the old flashing. Both are "a new roof." They are not the same job.
- Different overhead. A company running in-house crews, a project manager on every job, and a real workmanship warranty carries more cost than a company that subcontracts the labor and closes up shop if something goes wrong. That cost shows up in the number.
We wrote a full walkthrough of what belongs on a real quote in what is included in a roof replacement quote. This post is about the gap itself, how to size it up and figure out which of the three reasons above is actually driving it.
How Big Is a Normal Price Spread Between Roofing Quotes?
We can put real numbers on this because we build every homeowner several priced options on the same measured roof, not just one number. Across the roofs we quote in Southeast Michigan, the median spread between the cheapest and the most expensive option on the same roof is 16%. On our own median quote of $17,993, that is roughly a $2,900 gap between the low option and the high option, and both are pricing the identical roof with different shingle tiers.
A gap that size is normal and expected. It is the other end of the distribution that homeowners call us about: a quarter of our own quotes span 100% or more between the lowest and highest option, and that is almost always the asphalt-to-metal jump, not two contractors disagreeing on what an asphalt roof should cost. A $10,000 difference on an average Southeast Michigan roof is well outside our own 16% median spread for the same material and scope, which is exactly why it is worth stopping and figuring out what changed between the two numbers before picking one.
| Size of the gap | What it usually means |
|---|---|
| Under about 15 to 20% | Normal variance between two honest bids on the same shingle tier. Compare the checklist below to confirm. |
| Roughly 20 to 50% | One quote is likely missing scope (thinner ice and water shield, no decking allowance, reused flashing) or is pricing a step up in shingle line. |
| 50% or more, or a flat $10,000+ jump | Usually a different material entirely (architectural asphalt vs. metal or a premium designer shingle) or a company-overhead difference this large. |
These are our own observations from the roofs we quote, not a formula that applies to every market. Use the checklist below to find out which bucket your two quotes actually fall into.
What Should You Line Up Side by Side on Two Quotes?
Put both quotes on the table and check each of these eight items against both. Most $10,000 gaps show up on this list before you get anywhere near the bottom line.
- Underlayment and fastener. Synthetic underlayment fastened with plastic cap nails costs more than felt paper fastened with staples, and it is one of the first things a lower bid skips because you cannot see it once the shingles go on.
- Ice and water shield, in feet. The Michigan Residential Code sets a minimum at the eaves; a fuller number at the eaves, valleys, chimney, and skylights costs more material and more labor than a quote that answers "to code" and stops there.
- Ventilation and intake. A quote that adds intake at the eave, rebalances box vents to ridge vent, or accounts for baffles is pricing real work most bids leave out entirely because it means opening up the attic, not just tearing off the roof.
- Wood allowance, per sheet. A quote with a written per-sheet decking price is accounting for what the crew is likely to find once the old shingles are off. A quote with no wood allowance at all either assumes perfect decking or is planning to charge you later without a rate already agreed to.
- Who is on the roof. In-house employees paid a fair wage cost the company more than a subcontracted crew paid by the square. Ask directly, since this line does not show up anywhere on the paper.
- Warranty length, both kinds. A 10-year workmanship warranty and a 50-year workmanship warranty are not the same promise, and the longer one usually reflects a company planning to still be around to honor it.
- Permit, included or not. A quote that folds the permit fee and the process of pulling it under the contractor's license into the price is doing more than one that leaves it for you to sort out.
- Dumpster and disposal. Tear-off debris has to go somewhere. A bid that is missing a dumpster and cleanup line is either bundling it invisibly or planning to bill it as an add-on.
Write the answer for each item next to both quotes' totals. Once you can see which of these eight the cheaper number left out, the gap usually stops looking mysterious.
Should You Ask a Roofer for Wiggle Room on Price?
About 53 of our calls a year ask some version of this, and the honest answer is that we do not negotiate a single number up or down. Instead, every homeowner gets several full quotes at different price points on the same measured roof, from a solid standard system up through premium options, all built to the same installation standard. If the number feels too high, the better move is usually to ask what a lower tier looks like on the same eight-item checklist above, not to ask the same company to shave dollars off the same scope. A number that moves easily when you push back on it is worth asking why it was set there in the first place.
Does the Higher Quote Always Mean Better Work?
No, and this is where the checklist matters more than the price tag. A higher number sometimes buys a genuinely better roof: real decking replacement instead of an assumption, full ice and water coverage instead of the minimum, a rebuilt chimney flashing instead of a resealed one, an in-house crew instead of a sub. Other times a higher number is simply a higher markup on the identical scope as the cheaper bid. The only way to tell the difference is to check the eight items above against both quotes, not to assume price tracks quality automatically in either direction.
The reverse is also true. A lower bid is not automatically the better deal, and it is not automatically a scam either. Sometimes it genuinely reflects a leaner company with lower overhead doing honest work. The checklist is what separates that company from one that is planning to make up the difference in a change order once your old roof is already off and the crew has leverage.
Get a Line-Item Quote to Compare Against
A free on-site inspection is how we price every one of the eight items above accurately instead of guessing at them from the driveway, and you will walk away with several written options at different price points, all built on the same measured roof with the same installation standard. We publish the real price of every project we complete, with the address and square footage, in our job gallery, so you have real numbers to compare against before anyone sits down at your kitchen table. We serve Southeast Michigan from offices in Oxford, Ferndale, and Rochester Hills. See our roof replacement page for how we build a roof, check our financing options if a monthly payment fits better than paying all at once, and read questions to ask before you sign for the questions that surface most of this checklist directly from the contractor's mouth.
Frequently Asked Questions
Is it normal for roofing quotes to vary by $10,000?
It depends on what each quote is pricing. A $10,000 gap is far outside the normal spread we see between two honest bids on the same shingle tier and scope, which typically runs a median of 16% apart on our own quotes. A gap that large usually means the quotes are for different materials entirely (asphalt vs. metal), one is missing real scope like decking replacement or full ice and water coverage, or the companies carry very different overhead.
Does a higher roofing quote always mean better quality?
No. A higher number sometimes buys real scope, like decking replacement, fuller ice and water shield, or an in-house crew, and sometimes it is just a higher markup on the identical job as a cheaper bid. Compare the specific line items (underlayment, ice and water footage, ventilation, wood allowance, crew, warranty, permit, dumpster) on both quotes rather than assuming the price alone tells you which.
Should I just take the lowest roofing quote?
Not without checking why it is lower. A leaner, honestly run company can legitimately underbid a larger one. But a bid that is unusually low because it skips a wood allowance, uses staples instead of cap nails, or subcontracts the crew can end up costing more once change orders start. Run the same eight-item checklist against the lowest bid before assuming it is the best deal.
Can I negotiate a roofing quote?
We do not negotiate a single number. Instead we build every homeowner several full quotes at different price points on the same measured roof, so you can pick a different tier rather than ask the same company to lower a price on the same scope. If a number moves easily when you push back, ask what changed in the scope to justify the original price.
How many roofing quotes should I get before deciding?
Two or three from licensed local companies is usually enough, as long as you compare the same line items across each one rather than just the bottom-line total. Getting many more quotes rarely surfaces new information once you have checked underlayment, ice and water footage, ventilation, wood allowance, crew, warranty, permit, and dumpster on the first two or three.
