Soldato
In my area your 15k under offer would be laughed at the vendor woukdvsimply say the house is priced to include these and move on to the sealed bids overcasking the next weekend. Everyone's purchasing experience differs depends entirely what you are buying and where!Why some people seem scared of asking things of sellers i don't know. We even argued that they hadn't paid that years ground rent so we got £5 for that as well. It helped that there solicitor was about as cheap as they come and we used the best we could, and it showed we got everything we asked and often more.
Things like the leaky radiator well when we first viewed our offer dropped by 5k as soon as we saw the boiler and radiators then a further 2k for the mains wiring in total we firmly offered 15k below asking price. To fix the issues we found.
If you didnt spot a leaky radiator you didnt look hard enough before putting an offer in.