However, Is it within my right to renegotiate some aspect of the orginially agreed upon terms?

The house is in good repair (this is my first rental property) and I take care of issues promptly like the washer that broke, I bought a new one, I changed the toilet when it stopped working, I paid a roofer to put a new roof on, I paid a mason to repair the front entrance stairs.

I have a small portfolio out in Kansas city, and the things I've always inspected are the: HVAC, Roof, Foundation, Sewer via sewer scope, and Electricals.

I have 2 two story properties adjacent to each other that are currently vacant and uninhabitable, the roof is collapsing and the wooden beams are rotting etc.

Don't bother with an eviction notice to recoup rents, it'll be months before you get a court date.If the tenant won't cooperate, that tells you how much they value a roof over their head.

.#3 Contact Local Contractors for Labor PricingCall local Subcontractors and get budget pricing for common repairs on your typical rehab project.For example, call a roofer and ask what their average cost per Square of Architectural Asphalt Shingle Roofing would be on a 1,500 sf house, with a 6/12 pitch.Note: Some contractors will be reluctant to share pricing without seeing the property, but tell them you are just looking for a rough budget number you can use on future projects.#4 Compile Your Prices into a Spreadsheet or Estimating SoftwareOnce you start to get a better understanding of Labor and Material costs you will want to store this data into a spreadsheet or software that you can use to help you streamline the estimating process.The Book on Estimating Rehab Costs comes with a spreadsheet that you can use to help you populate your own database of labor pricing and material pricing.

I was tired of learning and trying to cover all aspects of how things can go wrong.

They forget long-term maintenance like hot water heaters, plumbing and roofs. 

Now we have a situation where we need to build a huge amount of new units just to keep up with demand - we simply have more people than roofs - and so the cost of existing homes has to creep up closer to the cost of new construction plus land.

Here's some basic info on the property:Asking price: $350kCurrent Gross Rent: $2600Landlord pays sewer/water at $150/month and trash at $64/month.Current owner flipped it 2 years ago so it has a brand new roof and windows, plus new appliances, granite counters, plumbing fixtures, etc.