How do I sell a cleaning company that depends on one big client?

In cleaning, one client can mean many sites. A property manager or building owner may hold a large share of your work through a single relationship. Buyers see that as a risk, and they are right to ask. You cannot make it disappear, but you can prepare, so the conversation is about how to handle it rather than whether it exists.

Know exactly what the client holds

Write down every site the client controls, the contract for each, when it ends, and who at the client makes decisions. Check whether there is one master agreement or many site agreements. Ask your lawyer what the contract says about assignment, consent and ending the arrangement, because that answer shapes what a buyer can rely on.

Get the relationship ready to transfer

A client who knows only you is hard to hand over. Introduce a supervisor or manager to the client’s contacts now, and let them handle regular matters. If the client is willing to meet a buyer or confirm that it intends to stay, that can carry real weight. Decide with your lawyer when the client will be told about the sale.

Be open early

Raise the concentration yourself, with the contract details, before a buyer finds it. Surprises late in a sale damage trust and can reopen terms. Should I worry about customer concentration covers the buyer’s side, which helps you anticipate the questions.

Structures a buyer may propose

A buyer may ask to link part of the payment to the client staying, to hold something back until the client confirms, or to have you stay on for a period. Each one shifts risk to you, so weigh them with your lawyer and accountant before you respond. A lender may also have its own view of a business built around one relationship.