The pre-sale work that pays for itself is almost always cheap, cosmetic, and boring: paint, light, landscaping, decluttering, and fixing small broken things. Major renovation before a sale rarely returns its cost, often returning less than half — you pay retail for the work, but the market pays you only a fraction of retail for the result.
The useful frame is not "what adds value" but "what removes objections." A buyer walking through your home builds a mental list of everything they'll have to deal with, and every item on that list becomes a discount — usually larger than the actual cost of fixing it. Removing the objection is profitable in a way that upgrading something already fine is not.
