Get it in Writing
Do not be tempted by a contractor who doesn't have an address, doesn't want a written contract and offers a discount if you pay cash. This type of underground economy transaction involves many risks and pitfalls that offset any savings to the homeowner.
For example, contractors who insist on cash may be unlicensed and uninsured; and without a written contract your cash advances are unprotected. They could neglect to get the required permits or inspections. Product warranties may not be valid if a recognized contractor does not install the items.
As well, an underground contractor may do poor work and create health and safety problems. If one of the contractor's crew is improperly trained, is injured on the job or damages your property or a neighbour's property, your homeowner's insurance policy might not cover you and you could be liable.
A cash deal may leave you with no legal recourse if something goes wrong or the work isn't satisfactory, or if the contractor walks off the job without finishing it. In fact, it makes it difficult for you to prove the contractor was ever there. And after you have paid the contractor, you may find that materials haven't been paid for or workers haven't been paid — and you are responsible for the bills. For your own protection and peace of mind, it's best to deal in a legal and responsible way — always get it in writing.