A Creve Coeur neighbor will often mention a roof number over the fence. It might be the figure a crew quoted across the street, or a job finished last spring on a house that looks a lot like yours from the sidewalk. It is a real number for a real roof, but it is not a price you can carry over to your own house without checking what sits under the shingles and what the crew will have to do on your lot. Roof prices move with the square count, the number of slopes, the pitch, the penetrations, the tear-off depth, and what the crew can reach. Two houses that look alike from the street can differ in every one of those.
Start with the square count, not the total
Roofers measure roofs in squares, where one square covers 100 square feet of roof surface. The footprint of your house is not the same as the area of your roof. A steep pitch adds surface, and so do hips, valleys, and dormers. A neighbor's total tells you what was measured on their roof and what they were charged for it. If their roof has two slopes and yours has six, the comparison stops being useful after the first minute. Ask whoever gave you the neighbor's number what the square count was and how it was taken. Then ask your own roofer for the same figure in writing. If the two counts do not agree, you have found the first question to settle before you compare anything else.
Look for what changes the labor
Most of the cost in a roof job is labor, and labor follows the details. A neighbor's bid will not tell you whether the crew had to strip one layer or two, whether the deck needed replacing in places, or whether the roof had a lot of small penetrations that take time to flash correctly. Check these items on your own roof before you accept any comparison:
- The number of layers on the existing roof, and whether the tear-off goes down to the deck.
- The pitch, and whether any section needs extra fall protection or slower work.
- Penetrations such as plumbing vents, a bathroom fan, a chimney, a skylight, or a gas flue.
- The eave and rake detail, including drip edge, and where the gutters meet the fascia.
- How much of the roof is visible from the ground and how much needs a closer look.
If the neighbor's job had only a few penetrations and yours has a bathroom fan, two vents, and a chimney, the labor lines will not match even if the shingles and the square count do. Ask your roofer to name each penetration in the scope so that you can see which ones are in the number and which ones are not.
The street does not share your lot
Creve Coeur lots vary in width, setback, and how the driveway meets the house, so a method that worked on one property may not work on the next. A neighbor's crew may have used a side yard, a shared curb, or a gravel pad to stage shingles and set the dumpster. Your lot may have a fence line, a patio, a sprinkler run, or a row of shrubs that the crew has to plan around. If the neighbor's bid was written for a crew that could stage material on the grass and yours cannot, the labor and cleanup lines will diverge.
Walk the lot with your roofer before you compare numbers. Ask where the material will land, where the dumpster will sit, which path the crew will use to reach the back of the house, and who is responsible for protecting the plants and vehicles along that path. The answers belong in the scope, not in a remark at the door on the morning of the work.
Timing changes the number too
A neighbor's job was priced in the season it was done. Summer heat in St. Louis changes how long shingles take to handle and how quickly a crew works through a tear-off. A roof left open into a cold stretch in winter has different risks than one finished in a dry week in the fall. The freeze and thaw cycle over the winter can work at any exposed flashing or deck that was not dried in properly, and a roofer who plans for a long open period should say so in the bid. If the neighbor's work was done months ago, ask whether the current price reflects material costs at the time you are deciding, and whether the quote includes a validity date.
Where two bids truly differ
A neighbor's roof may have had a different shingle, a different underlayment, a different ventilation plan, or a narrower tear-off scope than the one you are being offered. Ask what was installed, not only what it cost. If the neighbor's job was a repair rather than a full replacement, or a partial roof on one slope, the number describes a different job. Missouri has no matching statute for roofs, so whether a partial replacement must match the rest of your roof depends on your policy wording, and a neighbor's job cannot settle that question for you. Your roofer can describe the materials and the scope; the policy governs what your insurer will say about them.
What to ask before you treat a number as a benchmark
- What square count did the roofer measure, and how was the measurement taken?
- How many slopes and how many penetrations did the job include?
- Was the tear-off to the deck, and how many layers came off?
- What shingle was installed, and does your bid name the same product and profile?
- Where did the crew stage material and the dumpster, and which path did they use?
- Does the total include disposal, permit fees, and cleanup of the yard and the gutters?
- What does the bid assume about deck repair, and what is the unit price if more deck needs replacing?
If a roofer cannot answer these from the roof itself, the bid is not yet a scope. Ask them to walk the house again and write down what they saw.
When a neighbor's number is still useful
A neighbor's bid does one thing well: it tells you what the local market was asking at the time, and that helps you judge whether a number from a roofer you have not used before is in range. It is a sanity check, not a quote. Use it to decide which bids deserve a full walk of the roof, and do not use it to decide which bid to sign. A low number from a street comparison can hide a missing tear-off line, a missing penetration, or a staging plan the crew cannot carry out.
What you need from any roofer is a document that describes your house. That means the measured squares, the slopes and penetrations, the tear-off depth, the material, the staging and dumpster locations, and the cleanup. A good scope is written in plain language, and the homeowner keeps a copy. If the scope and the photos match the roof you can see from the yard, the price has something to stand on.
Keys Roofing writes that scope with photos and measurements and gives it to the homeowner in writing. If you have a bid from the street and want a second look at your own roof, call the office at (314) 220-2333 and ask for a walk of the property before you compare totals.