Tenants are gone in 3 days because of unforeseen events and I’m looking to upgrade the unit and raise rent...

There is a ton of older housing stock in Somerville and last thing you want is to redo upgrades and renovations.

So they actually came back stating the payment delinquencies are due to a broken ankle which stopped her from her serving job which was almost half of her income.

Is the AC broken at his place?

The flowerbed had an irrigation system builtin, but the automation system has been broken before we moved in.

I am looking for advice, if rent can be increased after  some upgrade.

This sort of happened to me when a broken limb fell and crushed my shed last year. 

Then, if the current tenant leaves invest in upgrades to increase value and rental income. 

.#5 Make Decisions Based on the NumbersYour real estate investing strategy should include the financial parameters by which you determine if a property is worth purchasing.Your strategy may include details about: Purchase price range.Investment cash needed for repairs and upgrades before leasing to tenants.Financing strategy for the short and long terms.Bargain purchase (the percent under fair market value a property must be purchased).Immediate value increase (the percent in increased value you expect after making initial repairs and upgrades).Geographic area.Net income.Cash flow.Net cap rate (annual net income/total value).When you find a potential investment property that fits within the guidelines of your real estate investment strategy, you can pull the trigger based on the numbers rather than emotions and personal preferences.#6 Don’t Buy from Unmotivated SellersMotivated sellers are usually willing to work with buyers, so focusing on finding motivated sellers can result in making great deals as a real estate investor.

Renting the property in "As Is" condition meaning they have approved of the unit themselves and I will not do any "Upgrades" to the property.