Most of the time I just DIY for anything that's not massive, but when it comes to big projects like Roof/Foundation you listed Friends/Family/Neighbours I trust who have used them in the past.
Once I find a not shit contractor, I latch on to them and maintain that relationship.
They make fire block spray foam that you can spray where tubing penetrates between floors and exterior walls. Most internal walls don’t require any additional fire protection.
For low voltage even poe they’re is no limit I know of other than the physical number of cables that will fit.
I have an older 1970s house that has a similar problem more so since climate change has been increasing the amount of water dropped in a storm.
The actual best thing is it get out the shovel and start digging. Installing a French drain and plumbing my gutter spouts and moving that out flow 15 feet away from the house fixed all my water issues.
And while I was putting back the soil I ran new landscaping fabric to reduce weeds as well as to grade the 4 feet of surface next to the house.
is this house a split level with 3 bed 1 bath upstairs, living/dining/kitchen middle, and finished basement w/ 1 bath downstairs? built in 1950-1970? if so I have the same layout!
Snap… My bad but sure you could create your own parts. I was thinking about adding a motherboard tray and HDD caddies to my design so I could use matx or uatx boards in custom 1 and 2u designs.