@Lennox Matsinde I recently bought an SFR a couple blocks from Othello lightrail and converted the basement to a 1BR mother-in-law. I am renting it on Airbnb for $1300-1600/month while living upstairs. I bought in the high $200s, spent ~$85 gutting and rebuilding it, and am sitting on a $1793/month mortgage (tax & insurance included in the mortgage). I went from paying $1700/month for my 1BR apartment in Fremont to paying $500/month after all expenses to live in my own house. It was recently appraised at $405k, but I think the market would pay $425-450 for it.
Separating the spaces through a basement unit allows you to collect income on the property without having to a) rent bedrooms in the space you live or b) pay a premium for a duplex. This concept only exists in the SE and SW of Seattle as prices for SFR in prime neighborhoods are out of control, but the model could be applied to other areas of King County, parts of Pierce and Snohomish without problems. Airbnb and other short-term rentals are more risky as GPR shifts month-to-month and occupancy is testy- you need to think of it like a hotel. A short-term rental insurance policy runs you higher than a standard homeowners policy, but you can still milk an additional 15-20% out of your unit if you market and manage it correctly. Keep in mind it is considered an unpermitted ADU, but the City is working on ADU regulations now and is not cracking down on mother-in-laws or Airbnbs at this time. In the future, it may be best to rent it on a standard lease, but for now I'll take the extra couple hundred/month.
@Harrison Liu Sunset Area in Renton is a good bet, but do they cashflow in the short-term? The City has been applying for CNI money with no success, but I predict they will get it in the next year or two. They are working on zoning allowances for townhouse development, and many of the duplex lots are capable of hosting 4+ units once the developers stream in. Agree that it is a solid play, but question short term cashflow.
In terms of your long-term plan, keep in mind much of our supply data indicates over-supply in mid 2018, which will result in negative rental annual rates of change throughout 2019 and some of 2020, decreased net-income, etc. If the data proves accurate, we should see some softening in prices in late-2018, bottoming-out in mid-2020, and rising again by end of 2020 or early 2021. That said, the time to buy a large MF asset in the area is not now, but you may be in a good position to capitalize on this projected softening in a couple years with some strategic plays in the short-term. Of course, major fluctuations in the macro-economy or significant unforeseen conditions could impact these projections.
@Jan Wanot I don't think that cap rates are the most meaningful metric for his situation, where valuations will be based on comps not income and he will live in one unit. He will almost certainly be in negative cashflow and will have to make assumptions about rent for the unit he is living in. I would focus on the raw pro-forma and net cashflow over cap rate until you are looking at investing in a larger MF asset. @Roger Wagoner we are seeing cap rates in Seattle in the 5% range, some dipping below with realistic underwriting. Pretty lousy.