The study, conducted by the Federation of Master Builders, found that it can take several months for the typical home renovation project to be completed.
Fitting a new bathroom suite, for example, will take an average of five months from start to finish. The same timeframe applies for converting a section of a bedroom into an en-suite, or to transform a downstairs space into a toilet.
Interestingly, fitting a new kitchen - or removing a wall to create an open-plan space - will also take five months.
Repainting a property from top-to-toe will also take - wait for it - five months, whilst a loft conversion will take six-and-a-half months and an extension will take a grand total of seven months.
Brian Berry, Chief Executive of the Federation of Master Builders, advises: "If homeowners want a new extension completed in time for Christmas 2019, they should be contacting builders for quotes by May at the latest. If you want your new kitchen installed by the start of the summer, you should be getting in touch with builders now".