For anyone buying a property with the intention of renovating and either selling on, or keeping as a renter, there are many standard jobs that have to be done throughout the property. The level of quality and finish will be determined by budget constraints. Obviously if you plan to keep the place and actually move into it, then buying the very best in your budget will bring greater personal satisfaction; whereas if the decision to sell on, or rent out, then lesser expenditure will help to recoup some of the outlay. There is often a ceiling at which a property cannot realistically be advertised for sale or rental.
Take a little Victorian terrace house – they often come with small rooms and lots of original walls. There is often a kitchen tacked on at the back in a newer addition and very often the bathroom will be further back than that. This will often mean 3 or 4 bedrooms upstairs with maybe in inside toilet on the landing. The obvious thing here would be to bring the kitchen into the house proper and use one of the upstairs bedrooms as a warm inviting bathroom or shower room. If the other bedrooms are large, then one could possibly benefit from having an ensuite added on also.
Where the house is will dictate the sort of resale price to be had so careful budgeting will dictate the level of finish expected when absolute perfection cannot be afforded.