Budget overruns rarely come from the build phase — they come from ambiguity earlier in the process. Unclear scope, undefined content ownership, and shifting requirements mid-project are the three causes we see most often, and all three are preventable with the right groundwork.
Before we estimate anything, we define what 'done' looks like in concrete terms: page count, content responsibilities, integrations, and the review process. Vague briefs produce vague estimates, and vague estimates are where overruns start.
Content is the most underestimated variable in any website project. Decide early who is writing, sourcing, and approving copy and imagery — and build that into the timeline as a real workstream, not an afterthought that happens 'in parallel'.
Finally, build in a structured change process from day one. New ideas during a project aren't a problem — undocumented ones are. A simple log of scope changes, with their cost and timeline impact made explicit, keeps everyone aligned and budgets intact.
