We purchased a fixer in Koloa, HI on Kauai for 603K in June 2018. We got in under contract in March 2018. There was flooding in April 2018 which damaged many homes on the north shore and put a squeeze on an already tight housing market. The median price of a single family home has increased 15% since the flooding.
We just finished turning our basement into a mother-in-law suite rental. The home is on a hill and the basement has a walk-out separate entrance.
We spent 28K on renovating the already existing basement and another 5K upstairs for ourselves. My original budget was 30K total, so I went over by 3K. I was also trying to complete it in 4 months, but it took closer to 6 months. The job itself didn't necessarily take longer. I was just unable to help out as much as I originally planned. I was originally thinking I was going to be able to put in 20-25 hours/week, when in reality it was 10-15 hours/week.
We put 20% down when we bought it, so our total PITI is $2700/month. We just signed the lease to the couple that is going to be renting the basement. The rent is $1600/month including utilities and internet.
The utilities are around $175/month for electricity, $55/month for internet, $35/month for propane and $35/month for water.
Upstairs is 1850 sq. ft. (3 bed/2 bath/2 car garage). Upstairs also has 600 sq. ft. covered deck. Downstairs is a 1 bed/1 bath that is 675 sq. ft. Total lot is 17,000 sq. ft. Tenants have their own separate fenced yard that is 750 sq. ft. Upstairs has a distant ocean view from the kitchen.
I know $1600/month sounds steep for a basement rental, but the median house price for our neighborhood is 805K. The median house price for the island is 728K. We are going to spend another 15K upstairs, so we are around 50K total for rehab. House should be worth about 800K.