I understand your question to be focused on what is required rather than what buyers desire in upgrades to yoru home. You should look at any safety and structural issues.
Here are some examples of items that you should check prior to lsiting your property: buried inoperative oil tanks, radon levels in basements about 4+, leaking/lifting roof tiles, foundations defects, furnace/ fireplace emmissions problems from chimney mortar deterioration, molds possibly in an attic with poor ventilation, water in basement easlily addressed by a sump pump.
Petrina Floody, Coldwell Banker Medfield MA
Buyers today are looking for updated kitchens and baths. There are economical ways for you to update without spending a fortune. Such as painting old cabinets and changing the hardware.
Today's buyers are also in love with hard wood floors and neutral paint colors.
Get your home inspected and see what big ticket items need attention, such as roof, windows, furnace, electric, plumbing, etc.
Lastly, go to Open Houses and see what your competition is doing!
Hope this helps.
Marie Zorn. Prudential Page Medfield, Ma
Sometimes it just depends on the situation and the pricing of the home. If someone is paying cash and knows they have to do updating you may not have to upgrade anything. It is when a property is being financed things can get tricky. For instance someone who is getting an FHA loan is going to need the house to be "move in ready" FHA will not allow peeling paint, or rotten trim. I recently had a situation where knob and tube wiring was an issue, new buyers can't always get home insurance unless the wiring is updated. I have not ever heard of anti scald shower being an issue. A home inspector should certainly pick up any major issues. Hope this was helpful.