Due Diligence Checklist for Buying a Roofing Business

Obtain three full years of tax returns (business and personal) plus current year P&L and balance sheet

Roofing financials frequently show large discrepancies between tax returns and internal P&Ls due to cash transactions, owner add-backs, and equipment depreciation elections. Reconciling all three years reveals the true earnings baseline.

Red flag: Tax returns show materially lower income than seller's recast financials with no clear, documented explanation for each add-back line item.

Commission a Quality of Earnings (QoE) report from an independent CPA with trades industry experience

A QoE normalizes owner compensation, identifies one-time revenue from major storm seasons, and adjusts for non-recurring expenses — giving you a defensible EBITDA figure to anchor your valuation and SBA loan application.

Red flag: Seller resists or delays providing source documents to a third-party QoE provider, or add-backs exceed 30% of stated SDE without clear substantiation.

Analyze monthly revenue by segment: residential retail, commercial, and insurance restoration

Heavy concentration in insurance restoration revenue creates feast-or-famine cycles tied to storm activity. Understanding the mix tells you how durable cash flows are in a non-storm year and what organic demand looks like.

Red flag: More than 60% of revenue in any single year came from insurance restoration work following one regional storm event with no evidence of repeat or referral business outside that period.

Review job-level gross margin by project type for the past 24 months

Blended gross margins in roofing typically range from 35% to 55% depending on mix. Job-level analysis reveals whether margins are consistent or whether large commercial jobs are subsidizing underperforming residential work.

Red flag: Gross margins have declined more than 5 percentage points year-over-year without a corresponding explanation such as a material cost spike or a deliberate shift to lower-margin commercial volume.

Request accounts receivable aging report and identify any balances over 90 days

Slow-paying commercial clients or disputed insurance claims sitting in AR inflate apparent revenue without corresponding cash collection. Uncollectible AR reduces effective purchase price.

Red flag: More than 15% of AR is over 90 days past due, or seller cannot explain specific balances tied to disputed insurance supplements or commercial punch-list holdbacks.

Identify all owner add-backs and obtain supporting documentation for each

Common roofing add-backs include owner vehicle expenses, personal cell phones billed through the business, family member payroll, and owner health insurance. Each must be verified and deemed reasonable by your SBA lender.

Red flag: Add-backs include revenue from side jobs run through personal accounts, or seller claims personal expenses paid by the business but cannot produce receipts or bank statements supporting removal.

Review seasonal revenue patterns and working capital requirements across 12-month cycles

Roofing revenue peaks in late summer and fall in storm-prone markets. Understanding working capital needs at the seasonal trough prevents cash flow crises in the first year of ownership.

Red flag: The business has relied on an owner line of credit or factoring arrangement to fund payroll during slow months, and no working capital facility will transfer at close.

Analyze equipment and vehicle depreciation schedules versus actual replacement needs

Sellers often accelerate depreciation on trucks, lifts, and trailers to reduce taxable income, which overstates cash flow. A physical equipment inspection against the depreciation schedule reveals hidden CapEx requirements.

Red flag: Multiple vehicles or pieces of equipment are fully depreciated on the books but are visibly worn and will require replacement within 12 months of close, creating unmodeled capital expenditure.

Request a full customer list with revenue by customer for the trailing 36 months

In residential roofing, no single customer should represent more than 5% of revenue. In commercial roofing, concentration risk is higher but a single client exceeding 20% of revenue creates significant dependency.

Red flag: One property management company, general contractor, or insurance adjuster referral source is responsible for more than 25% of total revenue and has no formal contract obligating continued business.

Identify the top 10 referral sources — insurance adjusters, realtors, property managers — and their relationship history with the owner versus the business

In insurance restoration roofing, adjuster relationships are often personal. If the seller's name and cell number are in the adjuster's contact list, that revenue may not transfer when a new owner takes over.

Red flag: Seller cannot name a single referral relationship that is formalized through a written agreement, preferred vendor listing, or platform enrollment rather than a personal friendship.

Review any signed maintenance, inspection, or service agreements and confirm transferability

Recurring maintenance contracts with HOAs, commercial property owners, or property managers provide predictable revenue and improve business value. Confirm each contract assigns to the buyer at close.

Red flag: Maintenance contracts are verbal agreements or contain personal service clauses that allow the counterparty to terminate upon ownership change without penalty.

Evaluate the pipeline: open estimates, signed contracts, and backlog by project type

A healthy roofing backlog of 4–8 weeks represents transferable revenue that reduces close-to-revenue ramp time. A thin pipeline signals owner disengagement during the sale process.

Red flag: Backlog has declined more than 30% from the prior year's comparable period and seller attributes it to seasonality, but the decline does not align with historical seasonal patterns.

Confirm whether preferred contractor status with national insurance carriers is transferable

Preferred contractor programs with carriers like State Farm, Allstate, or USAA provide consistent inbound lead flow. These enrollments are often tied to the business entity and license, not the individual owner.

Red flag: Preferred contractor status is tied to the owner's personal contractor license number and the carrier's program does not allow assignment to a new license holder without re-application and re-qualification.

Obtain copies of all state and local contractor licenses, including specialty endorsements for commercial or low-slope roofing

Operating without a valid license exposes the buyer to fines, project stop-work orders, and the inability to collect on contracts in many states. Verify license status directly with the state contractor board.

Red flag: Any license has been placed on probationary status, has an open complaint or investigation, or is held personally in the seller's name with no Qualifying Party arrangement available for the buyer entity.

Confirm that the contractor license is transferable or that a Qualifying Party arrangement can be established for the buyer

Many states require a licensed individual to serve as the Qualifying Party for a contractor's license. If the seller's personal license is the only credential, the buyer must obtain their own or hire a qualifying employee before close.

Red flag: The seller is the sole Qualifying Party, no licensed employee or subcontractor is available to serve in that role post-close, and the buyer cannot obtain licensure in the required timeframe before closing.

Review the current general liability insurance policy, including per-occurrence and aggregate limits, and confirm completed operations coverage

Completed operations coverage protects against claims on work performed before the policy period — critical in roofing where leaks can appear months after installation. Confirm limits are adequate for the business's project scale.

Red flag: Current GL policy has per-occurrence limits below $1 million, completed operations coverage has lapsed or been excluded, or the business has had two or more claims in the past three years.

Verify workers' compensation coverage and confirm all W-2 employees are properly classified

Misclassifying roofing laborers as independent contractors to avoid workers' comp premiums is a common compliance risk in the trades. A state audit post-close could result in back premiums, penalties, and personal liability for the buyer.

Red flag: Workers' compensation audit reveals that multiple crew members were classified as subcontractors but received consistent direction and scheduling that would qualify them as employees under state law.

Confirm surety bond is current and that the bond amount meets state and municipal requirements

A lapsed bond can result in immediate license suspension in bonding-required states. Verify the bond is active, the premium is paid, and no claims have been filed against it.

Red flag: A bond claim has been filed by a prior customer in the past 24 months and the seller has not fully disclosed the circumstances or resolution.

Request OSHA 300 logs for the past three years and review for recordable incidents and citations

Roofing consistently ranks among the highest-risk trades for OSHA citations and worker fatalities. A pattern of fall protection violations signals a safety culture problem that creates ongoing liability for the buyer.

Red flag: OSHA 300 logs show two or more recordable incidents per year, or the business has received a willful or repeat citation for fall protection violations within the past three years.

Obtain a full employee roster with roles, tenure, compensation, and licensure status for each W-2 employee

Experienced crew leads and estimators are the operational backbone of a roofing business. Understanding tenure and compensation relative to market rates tells you how stable and retainable the workforce is post-close.

Red flag: More than 50% of field labor is performed by subcontractors with no W-2 employees on roofing crews, and the seller has no written agreements with those subcontractors.

Review all subcontractor agreements for exclusivity clauses, assignment provisions, and termination terms

Subcontractors who are not contractually bound to the business can walk after close or demand higher rates from a new owner. Written agreements with non-solicitation and assignment provisions protect continuity.

Red flag: The seller's primary subcontractor crews have worked exclusively for this business but have no written agreements and have indicated informally that they prefer working with the current owner personally.

Interview key employees — crew leads, estimators, and office managers — to assess retention risk

A production manager or lead estimator who departs after close can cost the buyer months of revenue and significant recruiting and training expense. Early retention conversations are critical.

Red flag: The lead estimator or production manager has already indicated they plan to leave within six months of close, or the seller has not introduced the buyer to key employees as part of the transition planning process.

Confirm that all subcontractors carry their own general liability and workers' compensation insurance

If a subcontractor causes property damage or a worker is injured on a job where the subcontractor lacks proper insurance, the primary contractor's policy becomes the backstop — driving up claims and premiums.

Red flag: Certificates of insurance for one or more regularly used subcontractors are expired, unavailable, or show coverage limits below the primary contractor's requirements.

Assess whether the estimating function is owner-dependent or performed by a trained estimator using documented processes

If the owner is the sole estimator and salesperson, that function must either transfer to existing staff or be replaced immediately post-close. Undocumented estimating creates inconsistent job costing and margin erosion.

Red flag: The owner performs all estimates personally, there is no job costing template or pricing guide in use, and no employee has been trained to produce estimates independently.

Review any non-compete or non-solicitation agreements currently in place with key employees

In a business where crew relationships and customer relationships are interpersonal, enforceable non-solicitation agreements for key employees protect the buyer from a seller-backed competing launch post-close.

Red flag: No non-solicitation agreements exist with any employee or subcontractor, and the seller has not agreed to sign a personal non-compete as part of the purchase agreement.

Request the warranty policy documentation — terms, duration, and scope — for all work performed in the past five years

Roofing warranties typically range from one year for workmanship to lifetime on manufacturer-backed systems. Understanding what has been promised to customers tells you the floor of your contingent liability exposure.

Red flag: The seller offered extended workmanship warranties verbally or in writing without documenting them in a centralized system, making it impossible to quantify the full warranty obligation book.

Obtain a full history of warranty claims, callbacks, and repairs for the trailing five years with cost per claim

The frequency and cost of past warranty claims is the best predictor of future exposure. A callback rate exceeding 3–5% of completed jobs or average claim costs above $2,000 signals installation quality issues.

Red flag: Warranty claim costs have increased year-over-year as a percentage of revenue, or the seller cannot produce a centralized log of callbacks and instead relies on informal memory of past issues.

Identify any open or pending warranty claims, litigation, or customer disputes and obtain full documentation

Open claims represent known liabilities that must be priced into the deal or resolved before close. Undisclosed open claims discovered post-close are a common source of buyer-seller disputes.

Red flag: Seller discloses an open warranty claim or lawsuit only after the buyer's attorney specifically requests a litigation representation in the purchase agreement, suggesting it was not voluntarily disclosed.

Confirm whether any manufacturer-backed warranties (GAF Master Elite, Owens Corning Preferred) are transferable to new ownership

Manufacturer certification programs enable the contractor to offer enhanced material warranties that increase average job value and close rates. Losing certification post-close eliminates a competitive advantage.

Red flag: Manufacturer certification is tied to the seller's personal training credentials and cannot be transferred without the new owner completing a certification program that takes six or more months.

Review any claims made against completed operations coverage on the GL policy in the past three years

Insurance claims against completed operations coverage signal the same installation quality risks as high warranty claim rates and will affect the buyer's future insurance pricing and availability.

Red flag: More than one completed operations claim has been filed in the past three years, or the insurer has placed restrictions or sublimits on completed operations coverage at renewal.

Assess the job management platform in use — JobNimbus, AccuLynx, Jobber, or equivalent — and review data completeness

A CRM or job management system with complete customer history, pipeline data, and job costing records is a transferable operational asset. A business run on spreadsheets and text messages creates post-close chaos.

Red flag: The business has subscribed to a job management platform but less than 60% of jobs in the past 12 months have been entered with complete contact, scope, and financial data, making the pipeline effectively unusable.

Review the estimating and job costing process — templates, labor rates, material pricing, and margin targets

Documented estimating processes ensure consistent gross margin capture across all crew members and project types. Undocumented estimating creates margin leakage that compounds under new ownership.

Red flag: There is no written estimating guide, labor rate sheet, or margin target by project type — estimates are produced entirely from owner experience with no transferable methodology.

Evaluate the online reputation: Google reviews count, average rating, and response pattern over the past 24 months

In residential roofing, online reputation directly drives inbound lead flow and close rate. A business with 200+ Google reviews at 4.5 stars has a self-reinforcing referral engine that is difficult for new entrants to replicate.

Red flag: Average Google rating is below 4.0, there are multiple unresolved one-star reviews citing workmanship defects or poor communication, or the review count has declined over the past 12 months.

Confirm that vehicle fleet, equipment, and tools are owned versus leased and assess condition and remaining useful life

A roofing business's trucks, trailers, nail guns, and safety equipment represent significant capital. Equipment that is leased may have buyout obligations, and aging equipment may require immediate replacement capital.

Red flag: More than 40% of vehicles are leased with buyout obligations not accounted for in the purchase price, or a physical inspection reveals safety equipment and fall protection gear that does not meet current OSHA standards.

Review supplier relationships with ABC Supply, Beacon Roofing Supply, or equivalent distributors and confirm pricing tier

Volume-based pricing tiers with major distributors can represent 3–5 points of gross margin advantage over smaller competitors. Confirm that pricing agreements are tied to the business entity, not the owner personally.

Red flag: Pricing discounts are based on the seller's personal relationship with a regional sales rep rather than a formal volume agreement, and the rep has indicated they may not extend the same terms to a new owner.

Order a full litigation search on the business entity and all related entities for the past seven years

Construction defect claims, unpaid subcontractor disputes, and customer lawsuits can resurface post-close as successor liability if not identified and addressed in the purchase agreement representations.

Red flag: There are two or more construction defect lawsuits in the past five years, or the seller has a judgment against the business entity that has not been satisfied prior to close.

Review the business entity structure — LLC, S-Corp, C-Corp — and confirm clean ownership with no silent partners or undisclosed equity holders

Undisclosed ownership interests or liens on business assets can cloud title and create post-close disputes. Confirm that the seller has full authority to sell and that no third party has a claim on the business or its assets.

Red flag: A review of state business records reveals a co-owner or registered agent who is not party to the purchase agreement and whose consent to the sale has not been obtained in writing.

Confirm no active contractor board complaints, license suspensions, or state enforcement actions

A contractor board complaint that results in license suspension post-close would halt all revenue-generating activity. Verify status directly with the relevant state licensing board, not just through seller disclosure.

Red flag: A direct search of the state contractor board database reveals an open complaint or probationary condition not disclosed by the seller in the representations and warranties.

Review all lease agreements for office and storage facilities and confirm transferability and remaining term

A roofing business with a well-located yard for material storage and equipment parking has an operational advantage. A short-term or non-assignable lease creates post-close operational disruption.

Red flag: The primary yard lease has fewer than 18 months remaining with no renewal option, or the landlord has indicated informally that they prefer not to renew with a new tenant following ownership change.

Confirm proper disposal practices for roofing waste and no outstanding environmental citations

Improper disposal of asphalt shingles, flashing, and other construction debris can generate municipal fines and environmental violations that transfer with the business under certain deal structures.

Red flag: The business has received a municipal citation for improper debris disposal in the past three years and has not implemented a documented waste disposal policy with a licensed hauler.