Of course, of you buy a 5-10 year old house, you're likely to need to do some repairs/replacement during the 5-8 year holding period you're looking at anyway. - One advantage to buying a newer home is that you're more likely to get some on the in features already- granite countertops, open floor plans, etc.
If you are uncertain about how much to give, just to tip based on your bill. Generally, 10% - 15% of the bill is the most proper amount. For the tour guide and the driver, 10-70 RMB (1 - 10 US dollars) a day per person is adequate.
At Gett taxi services the minimum is 15% tip. WE suggest though you leave a 20% or even 25% tip when really satisfied with the service and your ride. At the end of the trip you can also rate your driver, view previous journeys and earn loyalty points towards free rides.