But, it can start to get a lot more expensive if you need to get engineering reports, if you need to pour footers, if you need to install beams, if jacking up the house causes other structural concerns, if there is a brick veneer/structure that crumbles during remediation, etc.Could be very inexpensive ($1-2K) or could be more expensive than knocking down the house and starting over. 

If neither parties agreed, taking the harasser to court is the only remedy the PM had, but my guess is the situation could have been mitigated before it came to that.

Any kind of leaks wants to be remedied well before finishes go in or you'll have a serious headache on your hands! 

Meth can be remediated, but you're looking at a lot of money to do it.

Consult an attorney to see if she is in violation of your lease, and if she is, you should post a remedy of quit, and then follow through with the eviction.

Once the property is stable then push closer to market in the coming years.So base numbers off of lower rents to be conservative and that rehab will take much longer than expected.This building sounds like pre- 74 so lead based paint remediation among many others things.If rents are at 700 market than calculate for instance 600.600 X 50 = 30,000 mo X 12 = 360,000 a year X .50 ( tenants pays utility ) = 180,000 NOI10 cap value 1,800,0009 cap 2,000,0008 cap 2,200,000At 14k rehab X 50 doors = 700,000 Nice meet on the bone there. 40,000 a door is 2,000,000Too much work for the return there at that level.You need to look at any short sales ongoing for apartment buildings there, foreclosures, current occupancy levels in existing buildings versus demand, and new construction permits ongoing for brand new product coming online in the area.The new product might have tennis courts, gym, clubhouse, pool house, electronic gates, playground, basketball courts, laundry in the units, etc.To add all those things and compete drives up overall costs.Contractor demand for the area is key as well. 3 to 5 years ago contractors were very hungry for projects.

Many people leave trash on our property and are walking past our tenant's cars and homes - which could be safety issue for our tenants.What are some things that we could do to try to remedy this situation? 

I have no problems getting financing through a bank for an investment property, however I have a difficult time saving up the down payment to get the loan.Any advice as to how I remedy this situation.Also, the bank I have used in the past is stating that regardless of property value, I must make a 25% downpayment on purchase price, and I think thats rediculous if the appraised value comes in more than 25% above purchase price.Any help is greatly appreciated, thank you

The underwriting company who offers the insurance is responsible for remedying any defects that are found in the future.  

First - the smell of gas is an exigent circumstance requiring immediate remediation, thus not infringing upon the renters rights.