However small the job, and whether or not you’ve tackled it yourself, there will be touch-ups required. Snags refer to the little things that need correcting, they are by nature small and often cosmetic issues.
Building surveyors specialise in identifying these issues; their services are often available of when buying a house to assess what work needs to be done and the general state of repair.
When renovating or extending, bigger defects should have been dealt with at the time they arose on site. Any issues that haven’t been resolved need to be tackled before final payment is issued.
If you had a builder, a small amount will have been withheld to make sure no defects appear after they’ve completed the job. There may be a negotiation process with the builder to release this last tranche of funds. Your architectural designer or engineer is likely to be a good mediator in these discussions.