There’s is also a concrete sidewalk issue where a tree has mangled the walkway.

Use a textured concrete paint made for walkways.

Hi allMy tenants have a driveway that fits one car, but the walkway area next to it could be filled in to make room for an additional car.

Their deeds entitle them to 10feet of walkway in some areas, and 20feet of road way in others. 

I'm currently in year 2 of my first mortgage and according to Zillow (which I have a gut feeling may inflate values), I'm already at %.79 LTV.I'd like to drop my $175/mo PMI so I've contacted my mortgage lender and a local appraiser.I've already made improvements to the property such as removing a bunch of cracked concrete from the front yard, replacing with grass, plants and a nice paver stone walkway.

Pump cost $300-400 depending on how rural or if they have to dig up a walkway.

New sewer line cost depends on the length of the run and what they have to dig through/under more than anything else. 30 feet with no concrete or stem wall vs 30 feet with driveways, walkways and a block wall are going to be 2 very different propositions...An average of $8k is pretty realistic.

Other examples include a cracked window, wobbly handrail, uneven walkway, roof with < 5 years of life left, hot water vent/relief pipe not 18" from the floor - the list goes on and on.For conventional lending, they want to be sure all major systems are functional. 

I let them know today that the yard would not be getting split and addendums would be made giving the other unit full use of the rear yard, and this unit would only have access to the shared walkway since nothing was ever specified in the leases.

Make a list on a yellow pad of every picky thing that needs completion: drywall, type of texture, electrical outlets, molding, all the interior trim, I assume you have pre-fab cabinets sitting in a garage if not - you need to, doorways and door hanging, all the walkways and outside hardscape are done?