What Belongs in a Scope of Work
Disputes on residential projects are rarely about dishonesty. They are about a gap between what the homeowner pictured and what the contractor priced, discovered at the moment the work reaches that detail. The scope of work is the document whose entire purpose is to close that gap in advance, and it does that job in proportion to how specific it is.
Name Products, Not Categories
A line reading new flooring throughout is not a specification, it is an intention. Flooring spans an enormous range in both cost and installation labor, and the contractor has to price something, so they price the middle of what they usually install. If your picture sat at the upper end, the difference surfaces as a change order later.
Specific means manufacturer, product line, and model or color where it exists. Where a decision genuinely has not been made, the correct instrument is an allowance: a stated dollar figure per unit that the final selection is measured against, so an upgrade produces a predictable adjustment rather than an argument.
Say Who Supplies What
Owner supplied materials are a frequent source of friction and the friction is almost always about responsibility rather than money. If you buy the fixtures, you own the consequences of a shortage, a defect, or a delivery that arrives after the plumber's window. That can be a perfectly sensible arrangement, but it should be written down, because the default assumption on both sides is usually that the other party has it handled.
The same applies to disposal, site protection, and cleanup. These are small line items that become disproportionately annoying when nobody claimed them.
Define Completion
Substantial completion and final completion are different things and the difference is where retainage and final payment live. A scope that says the work is complete when the space is usable is inviting a disagreement about the meaning of usable. A better version names the condition: punch list items identified in writing, corrections made, final inspection passed if one applies, and a stated number of days for the final walkthrough.
Exclusions Are Not Adversarial
The most useful section of a scope document is often the one listing what the price does not include. A contractor who writes exclusions clearly is not hedging, they are telling you where the surprises can come from. Common ones are worth expecting: unknown conditions behind finished surfaces, code upgrades triggered by the work, permit fees, and anything structural discovered during demolition.
Read the exclusions first. They describe the shape of the risk you are taking on, and they are considerably more informative than the description of the work itself.