I am nearing the end of this project and it was worth every moment I spent working.I am worried about the cast iron piping that runs under the driveways, but am budgeting replacement to avoid surprises

I was trying not to overspend for the area, and figured 4mm would do the trick... ironically, if you’re going cheap “for the area”, those are probably the areas you need the most durability!

Ironically rent goes up with number of bedrooms, cost is mostly in kitchens and bathrooms.

Slate roof (insurance company hated that, I've posted on here before), old galvanized steel or cast iron pipes that were failing piece-by-piece, old electrical with tenants complaining about tripping circuits, cracked foundations and water in the basement, and on and on. 

From there to the street it is cast iron.

The estimate was about $500 a beam installed but also offered other alternatives like some angle iron bracing to keep things in place.  

I have done cast iron bathtub refinishing re-glazing, but not wall tiles. 

My two cents is that it is somewhat ironic that the hardworking middle class voters who elected these government officials are indirectly being taxed because ultimately some of the added tax burden will be placed on their shoulders in the form of higher rents to cover higher tax bills.Also, are there any investors out there that feel like these increased taxes will help break the current market cycle?  

trenchles line replacementHad that done from the clean-outs to the street;  these were clay pipes and easily split when the tool pulls the PVC from one end to the other.However, pipes in a slab most frequently are iron and you're not splitting those with a trenchless tool. 

And, ironically, it can get more problematic with landlords good at retaining tenants for very long terms (i.e., landlords doing annual or semi annual turns get in the units and can go over them every inch, inside out, but not those with very long term tenants)...