My tenant was paying 2200 and my mortgage was 2700 per month.

Hello BP 😎 ai am new here but i listen to real estate rookie for awhile. i bought single family house in 2019 and now  i want to buy a four family house i have home equity should i use it at a down payment or not around here in boston the 4 family house is between 900,000-1.2M so i need to do house hack put down payments as low as 3.5% and rent my single family and show the Leander as an income to and i only have 30k saved up and the leander want to see 3 month reserve should i take HELOC and show them that i have reserve or is there any other  options?

Coincidentally this was about two months ago as well.  

Inventory increased 33.8% to 7,439For the month of May: Median Sales Price increased 3.9% to $400,000.

It can have a positive effect on marketability if done well, and should positively effect the tenants use of the units for the summer/fall months. 

He would like to see a 7% return on his investment, interest paid monthly, and his money back when we eventually sell or cash out refi (~10 years out).Our current intentions are to live in the new building, rent out our primary, and short term rent the 3 units adjacent to our unit in the new building.

I got the place at $175k and I'm currently at $158k and my apr is at 3.25% with a mortgage of $976 per month.

Once the property is rehabbed, you can refinance into a DSCR loan with no seasoning requirements.I'll let some of the traditional mortgage brokers chime in, but traditional financing might require a 12-month waiting period to pull your cash back out.

Your bridge loan would be that 6-12 month Interest-only loan with no prepayment penalty.

House was renovated, with tenant with at least a 2 year lease, management team handles any issues, monthly rent and reports on time each month.