How do I define a small home project's scope so it does not keep expanding?
Quick answer
Before starting, write one observable result you want, the few tasks needed to achieve it, and nearby tasks you are deliberately excluding. Check and list materials you already own, note uncertainties or questions for an expert, and set a stopping point you can recognize. When a new idea appears, put it on a separate list; add it only after deliberately revising the scope and deciding what changes.
The question, the details, the next step.
A practical checklist
Write one observable desired result before starting.
List the few tasks needed and name tempting exclusions.
Check and record materials already owned separately from undecided needs.
Set a visible stopping point that matches the desired result.
Record uncertainties as observations and questions, not assumed fixes.
Put new ideas on a separate list and revise scope deliberately before adding them.
A few more useful answers
Should shopping be part of the scope?
Include obtaining materials only if you intend it to be part of this project. First check what you already own; keep undecided needs separate from confirmed materials.
What if a related task seems necessary?
Pause and write down what you found. Decide whether it changes the original result or calls for guidance; do not silently add it to the task list.
How detailed should the stopping point be?
Specific enough that you can tell whether the agreed result is complete. Describe the finished condition rather than a vague goal such as “make everything better.”
