To add value to the property, we undertook extensive renovations including the removal of over 40 yards of trash, installation of a new septic system and wall-hung boiler, and a new well pump.

Drywall installation and finishing is harder than most people think and whoever did that job - see the tape showing - didn't think too hard about it. 

If it costs $100,000 to install an ADU and it rents for $1,000 a month, then it may be worth it.

They're cheap to purchase/install too. 

Since buyers will be putting so much consideration into the kitchen, installing new cabinets, countertops, and a nice backsplash is vitally important!

They should have the option to install a security alarm at their own expense.

We will be installing new cabinets, floring ,paint etc. 

It works but it was installed in 1967 so I need to prepare to replace it when it fails at some point.

We had to bring the 1925 house to 2023 code which involved un-installing 26 windows that were already nicely installed (in appearance) in the house, reframing them to 2023 standards (at the time) which also involved strapping the bottom of the wood framing with metal straps (mind you this all after we had already completed the inside renovation).  

If you pay the $250 and they say it's all perfectly glued and installed schedule 80 then you're going to have confidence without worry.