Banning a guest from a common area is absolutely within your right as a landlord because you have control over that space. 

It takes a lot of money to control that type of portfolio outright. 

ValuePenguin is a good source for the relative cost of insurance by state.Operational Costs - Costs like property taxes, insurance cost, state income taxes, regulatory costs (ex: time and cost to evict), inspections, rent control, etc., have a tremendous impact on your return.

My best guess is that rent control will be coming in the next 2-3 years.

I've been told that due to "Force Majuere".Force majeure is a common clause in contracts which essentially frees both parties from liability or obligation when an extraordinary event or circumstance beyond the control of the parties, such as a war, strike, riot, crime, epidemic or sudden legal changes prevents one or both parties from fulfilling their obligations under the contract.

Previous tenants had seen some but we got pest control to treat it and it wasn't a major issue.

Investment Info:Large multi-family (5+ units) buy & hold investment in Delaware.

Should I expense those materials using bonus depreciation, or the De Minimis Safe Harbor or they can only be capitalized?

I will be investing in the Wicomico County market and the Sussex County Delaware Market.  

California Civil Code section 1671 controls the amount of late fees you can charge.