Roofing Insurance Claims: Could an Estimating Service Be Your $100K Side Business?

XBuild, a San Francisco startup that writes insurance-ready roofing estimates with software, raised a $19M Series A in January 2026 led by N47, with Rackhouse Ventures and Andreessen Horowitz. The company says it has processed more than 15,000 projects worth about $250M in construction volume. The opportunity for a small operator is the same bottleneck at human scale: roofers who win storm work still have to turn photos and measurements into an estimate the insurer will accept.

Whether that becomes $100K a year depends on files per month, your fee and your costs. The math is below, along with the legal line that stops many people from doing this the wrong way.

What is the roofing insurance claim opportunity?

Roofing contractors who do storm work need estimates that match the format insurers use, and many lose time or money when scope is missed. A "supplement" is a request to add items the first estimate left out, under-paid or found after work began. A service that prepares those estimates and supplements for contractors is a desk job with a clear buyer.

Funded companies are working on this from several sides:

• XBuild says its Roofing Proposals tool produces detailed, editable estimates in under 15 minutes from measurement reports and job-site photos. An N47 partner described estimating and proposal generation as a major bottleneck for contractors.
• Estimate on Demand, a supplementing firm, says in its own press release that it helps contractors recover on average 28% more per claim. That is a company claim with no stated sample size or method.

How often roofing claims are underpaid is not established, so this post does not claim roofers "lose money" on claims. The defensible version is narrower: estimating is slow, supplements take skill, and contractors will pay to offload both.

How much can a roofing estimating and supplement business make?

At a flat $250 per file, 40 files a month nets about $108,000 a year in the example below. That is arithmetic, not a forecast, and every input is an assumption you must test.

Example estimate assumptions: you charge a flat $250 per file, a file takes about 1.5 hours, and software and measurement reports cost money. None of these figures come from a source. The fee model is yours to choose, and Estimate on Demand describes only a "performance-based" model with no percentage given.

The $100K target holds only in the medium and large rows. Hours: 40 files at 1.5 hours is 60 hours a month, which is a heavy side business but not a full-time job. The large version needs 100 files a month, which means many contractor clients, and it assumes you can hire and check other people's work.

It falls short if you land 15 files a month (about $3,750 revenue, roughly $2,750 after the medium cost line), if contractors push the fee down, or if storm season ends. Demand arrives in bursts, so the monthly average hides weak months.

Which companies are already doing this?

Five companies show the range, from funded software to a small service. Their funding numbers are not yours to copy, but their products show what contractors buy.

Netic is not roofing-only; it serves several trades. Netic and RoofMarketplace are context, not templates. Your closest model is Estimate on Demand's service shape, with the caveat that its 28% figure is self-reported.

What they did with millions versus what you can do with $5K to $50K. The funded companies are building platforms with engineering teams. With $5K to $50K you can sell the service layer: a contractor sends photos and a measurement report, and you return a carrier-style estimate and a supplement package. XBuild's own inputs (EagleView, Hover and Roofr reports) are the files contractors already have.

Do you need a licence or certification?

The risk is not the estimate, it is negotiating. Several states bar contractors from acting as public adjusters on their own jobs, and a service that drifts into advocating for a homeowner can cross the same line.

• Iowa: the Insurance Division says contractors may not act as public adjusters on the same property claim. They may provide damage reports and repair estimates, but may not represent or negotiate for the homeowner. Recon Roofing & Construction entered a consent order on 24 October 2024 after a June 2024 cease-and-desist over unlicensed public adjusting. A law firm summary of an Iowa order says contractors can prepare estimates, attend the adjuster's inspection and answer questions about estimates, but cannot negotiate with the insurer or advocate for coverage.
• Texas: HB 2103, effective 1 September 2019, says a contractor may not act as a public adjuster or advertise to adjust claims for property where it provides or may provide contracting services, whether or not it holds a licence.
• Georgia: a 2011 law firm summary says residential roofing contractors cannot represent or negotiate, or offer or advertise to represent or negotiate, a homeowner's roof insurance claim. Confirm the current text.
• Public adjusters: most states require an exam, continuing education and a surety bond. Florida caps fees at 10% for emergency and 20% for non-emergency claims, according to the same article.

If you want to negotiate for homeowners, that is public adjusting and needs a licence where required. If you prepare estimates for a contractor, stay on the estimating side and ask your state insurance department how it treats your service. This is not legal advice.

How much does it cost to start?

The legal setup is the cheap part: the SBA says registering a business usually costs less than $300, varying by state and structure. The costs below are example estimates, not quotes.

The SBA notes that general liability insurance covers bodily injury and property damage claims, and that businesses with employees need workers' compensation. Errors-and-omissions style cover is worth pricing because your work product affects someone else's claim.

How do you start a roofing insurance estimating business, step by step?

You start by selling to one or two contractors, not by building software.

1. Pick one state and read its rules on contractors, public adjusters and advertising claim services.
2. Get a short written opinion from an attorney or your state insurance department on what your service may do.
3. Form an LLC and open a separate bank account.
4. Choose your tools: a measurement report source and an estimating tool (see below).
5. Write a one-page service description: contractor sends photos and a measurement report, you return an estimate and supplement package.
6. Set a flat fee per file and a turnaround time. Do not tie your pay to a percentage until your lawyer reviews it.
7. Do 5 free or discounted files for one contractor to test accuracy against what the insurer approves.
8. Track every file: what was submitted, what was approved and what was added.
9. Put the results in a one-page case sheet with your own numbers, not vendor claims.
10. Sell to 3 to 5 more contractors, starting with ones who do storm work and lose time on paperwork.
11. Add a written scope statement to each contract that says you do not negotiate with insurers on behalf of homeowners.
12. Revisit pricing after 30 files.

Which free tools and resources can you use?

Free tiers change often, so confirm limits on each vendor's site.

How can you use AI in a roofing estimating business?

AI helps with the repetitive parts: reading measurement reports, listing line items and drafting the narrative. Estimate on Demand says it combines AI-assisted line-item identification with experienced estimator reviews, which is the right model: software drafts, a person checks.

• Estimates: XBuild says its tool produces editable estimates in under 15 minutes.
• Follow-ups and booking: Netic's product helps trade companies book appointments and generate sales with AI, according to its investors' law firm, which suggests contractors will expect fast replies from any vendor.
• Narratives: use a general AI assistant to draft photo captions and scope narratives, then check every line yourself.

Never let AI invent code citations or line items. A wrong supplement damages your client's credibility with the insurer.

How do you scale it faster?

Scale by adding contractors before adding hires. Once you have 5 to 10 contractor clients and steady storm work, hire a contract estimator and check their output on every file.

• Sell through contractor groups and supplier relationships: Roofr's investor ABC Supply is the largest roofing supplier in North America, according to Roofr's announcement, which shows how much of this trade runs through suppliers.
• Package a monthly plan for contractors with predictable volume.
• Move to a software-assisted workflow when you pass about 40 files a month, because manual work becomes the limit.

Free tools stop working when you need team accounts, file history or integrations with a contractor's CRM.

What are the risks?

The biggest risks are legal, concentration and commoditisation. Most new businesses do not last: BLS data shows that for establishments opening in 2005 to 2007, roughly 77 to 80% survived a year, 45 to 47% survived five years, and about 33% survived ten. That covers all private-sector establishments, not roofing services, and BLS says construction ranks among the lowest for survival.

• Legal: drifting into negotiation can trigger public adjuster rules, as the Iowa consent order shows.
• Concentration: two contractors can be most of your revenue.
• Seasonality: storm work arrives in waves.
• Competition from software: XBuild, Roofr and others are building tools that shrink estimating time, which pushes manual prices down.
• Quality: an error in a supplement can cost your client the job.

What's still unclear?

• Underpayment rates. How often roofing claims are underpaid is not established, and the 28% uplift is the vendor's own number.
• Fees. Estimate on Demand describes a performance-based model without a percentage. Florida caps public adjuster fees, but a contractor-side estimator is a different role, and the line varies by state.
• State rules. Iowa, Texas and Georgia are covered here. Other states differ. The Georgia summary dates from 2011.
• Traction. XBuild's volume figures are the company's claims.
• Weakest point of the argument. The $100K case needs 40 or more steady files a month, and nothing here shows that demand exists for a solo operator.

This is research, not legal, tax or financial advice.