Buying or Selling a Commercial Construction Business: The Complete Guide

Buying or selling a commercial construction business comes down to a backlog a buyer can cost, a bond a surety will still write, and a project manager who can start the next job when you are not in the trailer. What trades is transferable cash flow after a real PM and superintendent wage, job costs that match the bank, and work in progress that is not only your estimate. A tenant-improvement GC, a ground-up commercial builder, and a public-work contractor are different companies. Price a personal surety relationship as if the bond transferred with the stock and you will use the wrong multiple.

The short answer: an owner-operated commercial contractor, where you are still the estimator and the person the owner calls, often trades around 2x–3.5x Seller's Discretionary Earnings (SDE) after a real PM wage. A company with a project manager already running jobs, written contracts, a costed backlog, and a bonding path can move toward 2.5x–4.5x SDE. A managed firm with a controller and more than one PM can be read on adjusted EBITDA. Equipment and the yard, if you own them, are usually a separate price. Those ranges are directional. They are not a quote.

This guide is for commercial construction — tenant improvement, ground-up commercial, and public or private commercial work sold to owners and developers. It sits on our construction sale page, next to the general contracting guide and the specialty trade guide. A kitchen and bath remodeler is a different book. A concrete crew is a concrete contractor. Do not blend a commercial GC with a home remodeler.

Companies that sell well have job files that match billings, a second PM, a license and bond path, and a backlog with costs. Companies that sell poorly are a personality who bids every job, retainage you have already spent, and a surety who has only ever met you.

This article is not legal, tax, licensing, bonding, or lien advice. Who may qualify a license, what a bond requires, and how retainage must be held change by state and by project. Confirm them with qualified counsel before you sign a letter of intent.

Start with the construction sale page or a confidential business valuation.

Why Commercial Construction Is Different

Commercial construction sells a finished building someone else will occupy. Several facts change the price:

• The bond may be personal. A surety that underwrites you, not the company, is a closing problem. Ask the agent, in writing, what a buyer must show.
• You may be the estimator. If every bid waits for you, that is key-person risk. A transferable company has a PM who has already run a job you did not bid.
• Retainage and overbillings are not cash. Money billed ahead of cost, and money held back until completion, move working capital. Buyers will rebuild the schedule.
• The license may be personal. A qualifier who will not stay is not a footnote.
• A $200,000 TI and a $4 million ground-up job do not share a cycle. Split them.

Who Pays: Owners, Developers, and Public Agencies

Private owners and tenants

Private owners and tenants are the core file. A build-out, a small commercial shell, or a repeat client with a property manager. Cash jobs that never hit the operating account will not survive diligence. A Florida retail TI and an Ohio or Texas office build-out can both be real revenue. Put the contract, the schedule of values, and the change orders in the file.

Developers and public work

Developers and public work are the file a surety and a lender will read. A GMP, a bid bond, and a prevailing-wage job are a different risk from a negotiated TI. One developer at a third of the backlog is concentration. Ask, before you list, whether they will keep the buyer. The answer belongs in the letter of intent.

Main Street versus a lower-middle-market GC

Main Street is one crew, you estimating, and a license in your name. Price it on SDE. Lower middle market is a PM who is not you, a controller, bonding the company can discuss without you in the room, and a backlog measured in months. That file can be read on adjusted EBITDA. Do not price a one-PM shop like a multi-office GC. The remodeling guide is the residential frame when that is actually the work.

What Buyers Underwrite

Job cost and the mix

Job cost and the mix are the proof. Buyers want twelve to twenty-four months of jobs by type, with contract price, cost to date, billings, and what is left, tied to the bank. A spring you annualized is not the run rate. A job you finished and have not collected is a receivable.

Contracts, change orders, and claims

Contracts, change orders, and claims are the book. What is signed, what is disputed, and which subs you still owe. An unsigned change order is not profit. Put it on the schedule before a buyer finds it in an email.

Bonding, the license, and the yard

Bonding, the license, and the yard are the right to bid the next job. A surety letter, the qualifier, equipment liens, and whether the office lease assigns. If you own the yard, say so. Buyers price the operating company, the equipment, and the real estate separately. SBA 504 can finance a building and long-lived equipment. It does not finance the goodwill of a bonding relationship.

Work in progress and retainage

Work in progress and retainage are the number that surprises sellers. Percent complete should be a schedule someone else can tick. If you cannot tie each job to a cost, expect the backlog to move. Retainage you have already spent is a hole in cash at close.

How Sellers and Buyers Should Read the Multiple

Use SDE when the owner is still estimating or still walking every job. Add back only costs a buyer will not keep, and only after a market wage for the PM and the estimator. The valuation guide is the method. Equipment is not inside the multiple. A surety relationship is not a line item you can add back.

Getting the File Ready

Twelve to thirty-six months is the useful window. The sale-prep roadmap is the sequence. For a commercial GC, the work is specific: a PM who can run a job, a costed backlog, the bond conversation started, and the license path in writing. Keep the process quiet. A developer who hears you are selling will call another GC. The confidential sale guide is the rule.

Who Buys a Commercial Contractor

A PM who wants the book, a larger GC entering a market, and a sponsor adding a trade are the usual buyers. They do not underwrite the same file. The individual needs SBA, a qualifier path, and sometimes seller financing. The 7(a) cap is $5 million. The strategic buyer will ask whether the surety will write the buyer and whether the backlog is real. A service-business sale fails when the only person who can sit with the owner is leaving.

Diligence, Financing, and the First Ninety Days

Diligence is job files, tax returns, the WIP schedule, bonding, license, insurance, and subcontractor aging. The diligence guide is the calendar. Expect a lender to recast related-party rent, a wage you never paid, and overbillings. Working with an SBA lender means the backlog matches the bank.

A holdback shows up when the qualifier is you, the bond has not been discussed, or one owner is a third of the backlog. Tie it to a date and a fact. The earn-out note is the structure. Transition is the jobs already sold. A company that cannot start a Monday pour or a Monday TI without you is a job with a trailer.

What Moves the First Offer

Warranty you still owe, a punch list, and a sub you have not paid belong in the letter so the price is for work a buyer can finish. Unsigned change orders, a claim you have not reserved, and retainage already spent should be on the WIP schedule. A buyer who finds them in a text thread will reserve more than the cost. Show the bond status and the open permits. Name the PM, the wage, and the jobs they already run without you. Include the cost of the weeks you stay to finish work already under contract. A buyer who has not met that PM will price a hire. Put the largest open job next to that name. The close should not assume a Friday wire if the qualifier or the surety is still only you. A buyer who has not met the PM will price a hire. Write the wage, the jobs, and the next start date on the closing checklist. Put the largest open contract next to that name, with retainage still held and retainage you have already spent. Unsigned change orders and a sub you have not paid should be visible before anyone treats the backlog as cash. Note which job starts first and who meets the owner. The bond conversation belongs on that same page, with the date the agent said a buyer could be considered. A company that still needs you to price every bid is a job with a trailer, and the letter should say how many weeks you will stay to finish work already under contract. Note which superintendent walks the largest job and what that week of labor costs if you are gone. Overbillings, a claim with no reserve, and equipment titled to you should be on the WIP page before a lender orders a search. If the surety has not met the buyer, do not promise a closing date that assumes a new bond. Show the open permits and the subs still unpaid. A backlog nobody else can cost is a list of hopes. The price should follow the schedule someone else can tick, including the punch lists you already know about. Add the retainage aging, the bond limit you actually use, and the name of the person who already runs the Monday meeting. A buyer who sees those three lines will underwrite the jobs you are leaving, not the bids you still hope to win. Put that page in the front of the file. Include the next start date you have already promised the owner, and the crew that will be on site that morning. Write it down before you sign today.

Talk With Bridge Point

If you are preparing to sell a commercial construction business — or you are a buyer who can staff the jobs and hold the bond conversation — Bridge Point Business Brokers can help you value the backlog and keep the process confidential. Start with a valuation or contact us at (352) 515-0226.