Buying a construction contractor in New York

The acquisition thesis

You are buying a system that can estimate, win, staff, complete, bill, and collect profitable work without the seller. A full schedule can destroy cash if bids are wrong, change orders are disputed, retainage is slow, or the owner is the only estimator and relationship holder.

Rebuild work in process job by job

Request every open and recently completed job with original contract, approved change orders, committed purchase orders, labor and material cost to date, estimated cost to complete, billings, cash received, retainage, and expected completion date. Recalculate percentage complete and compare prior monthly forecasts with final margin.

Job test	Buyer question	Typical response
Estimate fade	Did projected gross profit decline from award to completion?	Normalize earnings and retrain estimating
Underbilling	Has earned revenue run ahead of billings and collection?	Increase closing working capital or exclude doubtful balances
Overbilling	Has cash been collected for work still to be performed?	Treat the remaining performance obligation as a liability
Change orders	Are they signed, priced, collectible, and included consistently?	Exclude unsupported upside
Retainage	When is it contractually due, and what has historically been written off?	Age and haircut the receivable

Illustrative WIP case—not a market benchmark

A $1.20 million renovation has $480,000 of cost incurred and an updated total-cost estimate of $800,000. At 60% complete, earned revenue is $720,000. If the contractor has billed $800,000, the $80,000 difference is not extra profit; it is work the buyer still owes. If the cost-to-complete estimate later rises by $100,000, expected job gross profit falls from $400,000 to $300,000. The acquisition model should use the revised economics and test whether similar fades recur across the seller's estimates.

Backlog is a forecast, not a second purchase-price multiple

Split backlog into contracted, awarded-but-unsigned, bid-pending, recurring service, and seller relationship work.

For each item, verify:

• Termination rights
• Assignment or change-of-control provisions
• Price-escalation protection
• Remaining gross profit
• Labor plan
• Bonding requirements
• Schedule
• Customer concentration

A $4 million backlog at an estimated 18% gross margin represents $720,000 of forecast gross profit before overhead and forecast error—not $4 million of value. Stress it for wage inflation, material quotes, weather, liquidated damages, and one delayed project.

Model the contractor's cash cycle

Build monthly cash by project rather than using annual EBITDA alone.

Include:

• Deposits
• Mobilization
• Payroll timing
• Supplier terms
• Underbillings
• Overbillings
• Retainage
• Disputed change orders
• Insurance deposits
• Bond costs
• Seasonal field capacity

A buyer may need cash even when percentage-of-completion accounting reports profit.

Define working capital in the LOI and purchase agreement. Specify whether retainage, under/overbillings, customer deposits, accrued labor, warranty reserves, and disputed claims are included. The working-capital guide shows how a target and true-up work.

Price the seller's actual jobs

List:

• Who estimates
• Sells
• Manages projects
• Schedules crews
• Approves change orders
• Controls purchasing
• Supervises safety
• Holds required qualifications

Replace the seller's labor at a market cost before calculating SDE or EBITDA. Key superintendent, estimator, project-manager, and foreperson retention should be addressed before close.

New York-specific transaction gates

Public and covered work

NYS DOL says contractors and subcontractors must register before bidding on or beginning covered public work and covered private projects, and certified payroll submission to DOL became required on December 31, 2025 ^[1] . If public work matters, reconcile registrations, payroll classifications, prevailing-wage records, apprentices, subcontractors, debarment checks, and certified payroll to the job ledger.

Capital improvement versus repair

New York's tax treatment depends on the work. With a properly completed Form ST-124, a contractor generally does not collect sales tax from the customer on a qualifying capital improvement, while repair, maintenance, and installation services are generally taxable; contractors generally pay sales tax on incorporated materials ^[2] . Publication 862 classifies common jobs and emphasizes that the facts determine the result ^[3] .

Sample the seller's estimates, contracts, exemption certificates, vendor invoices, customer invoices, and sales-tax returns by job type. A clean income statement does not cure years of misclassification.

Local licenses and qualifying people

Requirements vary by trade and locality. In New York City, DCWP requires a Home Improvement Contractor license for covered residential work and its application includes business, exam, and trust-fund or surety-bond requirements ^[4] . Build a jurisdiction matrix for every place and trade where the company works; do not rely on the seller's statement that a license “stays with the company.”

Diligence requests that change the deal

• Three years of job-cost reports, WIP schedules, estimate revisions, closed-job margin history, and backlog.
• Contracts, change orders, claims, warranties, liens, notices, liquidated damages, disputes, and closeout status.
• Customer and project-manager concentration, bid source, hit rate, and repeat-work history.
• Employee roster, union agreements, prevailing-wage files, safety logs, workers' compensation claims, and subcontractor certificates.
• Equipment list by serial number, ownership, liens, utilization, maintenance, and next replacement.
• Licenses, registrations, qualifiers, bonds, insurance, permit history, and transaction-continuity plan.
• Sales-tax returns and job-level capital-improvement support.

Translate findings into deal terms

• Use a specific working-capital definition and project-level closing schedule.
• Exclude unapproved change orders and doubtful retainage from the target.
• Condition closing on required registrations, bonds, insurance, key staff, and material customer consents.
• Use an escrow or holdback for known claims, tax exposure, warranty work, or final WIP uncertainty.
• Tie any contingent value to collected gross profit, not awarded revenue.