I noticed that the lender increased my mortgage insurance (MI) premium to almost double the original amount. 

I am considering increasing my home insurance deductible from $1500K to $4000K.

@Taylor CochranOkay.So, you have to treat this like a buy and hold rental with you also living in one unit.So, you need to calculate the cash flow and the ROI.On the surface, if you're renting part of it for $1,750+ and mortgage would run around $2,500 at 4.5% interest rate.That leaves you with a negative cash flow for the investment before you consider property tax, home insurance, and reserves for maintenance, capital expenditures, vacancies, utilities, and property management.You should check out the Bigger Pockets video on rental property analysis.

Is this standard or does anyone own a multifamily with insurance at a less inexpensive rate?

Through a lengthy and thorough insurance claim, I doubled my money so that was very good! 

4 bdr house with 2 bath, remodeled kitchen, no major damages or repairs in FullertonSqft: 1377, 6018 lotPurchase price: 460,000Closing cost: 13800Down payment: 92,000 20% downMonthly mortgage: 1864.60Rent income: 3000Property taxes: 421.67/month Insurance: 100/month Vacancy: 100/monthCapex: 150/month Total expenses: 805Financing: 1864Income: 3000Cash flow:~330ROI:3.74So this is just me practicing for a property in Fullerton.

Hello @John LeavelleProperty 1’s mortgage, insurance, and taxes is $445 and rent collected per month is $950.Property 2’s mortgage, insurance, and taxes is $800 and rent collected per month is $1,200.Would the refinance cut that much from the cash flow?

As for collecting monthly payments you hire a servicer for $20-25 a month and they will make sure there is insurance on the property, as well as escrow taxes and insurance.  

Their son burned their house and the insurance company moved them into a hotel.

The taxes are around 1680/year, and I'm going to guess insurance would be 30-40 a month (realtor.com estimate plus some).