Add and ADU to and existing Duplex Property?

Add and ADU to and existing Duplex Property?

Portland, OR · Member since 2021 · 10 posts · 1 vote

Hi Everyone - Looking for general short-term rental / ADU advice here.

I currently own a duplex where I live in one unit and short-term rent the other. I make about 45k/yr just off that one unit via AirBnB. I have a small property, but for about $150k I could build an additional unit and probably make another 30-40k/yr off of that given the area I live.

Here are some numbers: Purchased house several years ago for 550k. Have about 400k left on mortgage. Property is current worth about 750k.

Seems like a good investment to me, but I worry about over-leveraging in a hot market if I decide to sell at some point. What are your thoughts?

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Brad HammondBusiness Member
Real Estate Agent · Portland, OR · Member since 2016 · 1k+ posts · 605 votes
5y

Hey @John B., I've got some thoughts for you.

1. With the residential infill project that starts on August 1t, your property might qualify for it.  I just wrote an article on it for my newsletter.  DM me your email address if you want me to forward it to you.  Or you can look it up online.

2. You should check out Dweller as an ADU option. They are pre-fab ADUs and they have good financing options.

3. As you know the city would rather you use it for a long-term renter so to get a short-term permit might be very expensive.  

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  • Investor · The worst town to live in, KS · Member since 2016 · 4k+ posts · 4k+ votes
    5y

    Are you going to build it yourself or pay someone else to do it?  I've done repairs/remodeling on my STRs that would cost about $5000.  It was my time and less than $1000 in materials.

  • John UnderwoodPro Member
    Investor · Greer, SC · Member since 2014 · 13k+ posts · 17k+ votes
    5y

    You made 45k so that is your net number?

    Is it permitted to build another building on this property?

  • Dan H.Pro Member
    Investor · Poway, CA · Member since 2015 · 7k+ posts · 8k+ votes
    5y

    I am unsure to your location, but in CA ADUs are typically limited to rentals of no less than 30 days. This could impact your STR plans. You could look into living in the ADU and STR the place you are currently living. Or you could long term rental the ADU for less rent but also less work.

    If you can build it for $150K and make $30K/year after including for all expenses (including allocation for cap expenses) that would not be bad.  However, your rate of return would be greater if you could finance the construction.  If I could build it $60K out of pocket and make $20K/year after all expenses (including cap ex), that would be a good return (but below what I typically obtain).

    Good luck

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @John Underwood Yes I live in a city that is heavily promoting dense housing. Waiving permitting fees, etc.

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @Dan Heuschele Thanks Dan, good things to think about.

  • Bruce WoodruffPro Member
    Contractor/Investor/Consultant · San Diego / Phoenix · Member since 2021 · 12k+ posts · 15k+ votes
    5y

    If the numbers work and your city is promoting ADUs, do it. I've bid a lot of these when they were in vogue starting out a few years ago....How many SF are you getting for your $150k?

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @Bruce Woodruff Probably something around 500sqft, but it will be a bit higher end if I go that route.

    The more I think about it I might just want to relocate and buy an existing 3plex or 4plex instead.

  • Michael BaumPro Member
    Olympia, WA · Member since 2016 · 8k+ posts · 7k+ votes
    5y

    Hey @John B., make sure you can short term rent that ADU if you are allowed to build it. The encouragement to build ADU's in Portland and Seattle are for low cost housing and not short term rentals.

    I know Seattle is restricting the short term rental use of new ADU's placed on existing platted properties.

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @Michael Baum Good point. Need to do more research on all the different rules. Thanks for the heads up on that.

  • Brad HammondBusiness Member
    Real Estate Agent · Portland, OR · Member since 2016 · 1k+ posts · 605 votes
    5y

    Hey @John B., I've got some thoughts for you.

    1. With the residential infill project that starts on August 1t, your property might qualify for it.  I just wrote an article on it for my newsletter.  DM me your email address if you want me to forward it to you.  Or you can look it up online.

    2. You should check out Dweller as an ADU option. They are pre-fab ADUs and they have good financing options.

    3. As you know the city would rather you use it for a long-term renter so to get a short-term permit might be very expensive.  

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @Brad Hammond Thank you, appreciate the expertise.

  • Realtor · Seattle, WA · Member since 2019 · 117 posts · 165 votes
    5y
    Originally posted by @Michael Baum:

    Hey @John B., make sure you can short term rent that ADU if you are allowed to build it. The encouragement to build ADU's in Portland and Seattle are for low cost housing and not short term rentals.

    I know Seattle is restricting the short term rental use of new ADU's placed on existing platted properties.

    Hey Michael,

    What do you mean by that? I haven't seen anything other than the normal 1 STR limit in Seattle. Is there another piece of legislation going into effect that I'm missing?

  • Michael BaumPro Member
    Olympia, WA · Member since 2016 · 8k+ posts · 7k+ votes
    5y

    Hey @Jess Haas, yes there is. Mayor's executive action 2019-04 I believe is the number. It loosens the restrictions on AADU and DADU units in certain zones.

    They will be actively monitoring the permitting and use of the units. 

    In SF5000, SF7200, and SF900 zones, up to two ADUs may be constructed. This can be either two AADUs or one AADU and one DADU. The second unit must meet specific criteria to either 1) meet green building standards or 2) be an affordable unit reserved for income-eligible households. In RSL and multifamily lowrise zones, only one accessory dwelling unit is permitted in each single-family, rowhouse, or townhouse unit. ADUs are not allowed in apartments.

    So essentially if you choose to construct a AADU or DADU on your property, you will have to meet green building standards and be reserved for low income folks.

    Essentially if you apply for the STR permit, it could get denied due to use requirements for the newly constructed dwelling units.

    You will have to do some research or make a call or 2 to see how things are shaking out. Some of the city council has said openly that they will be restricting or removing STR permits if they are used for that purpose.

    You are in Seattle so you know the council is not friendly towards landlords at all. 

  • Portland, OR · Member since 2021 · 10 posts · 1 vote
    5y

    @Michael Baum This is good information for me as well. I’m in Portland, but this is starting to feel like not a great investment if I can’t short-term rent it. Thanks for the detailed information.

  • Investor · Portland, OR · Member since 2021 · 32 posts · 9 votes
    5y

    @John B. As long as you're living on the property I think you can rent out several units. Confirm, but that's my understanding. I don't know how they tally the 2BR vs 3BR+ permits, but I've been asking around for a property I'm working on thats somewhat relate-able. Also in Portland, 2/1 in front that I'd like to make a 3/1, plus a 1/1 detached ADU where I live in back.

    I don't know for sure if having multiple, separate units on the same property means you have to add them all for a BR total on a whole property or if each unit counts as its own >2BR easy to get permit. That would be a big thing to consider in your calculations.

    Two people I talked to that have the 3BR+ Airbnb permits have said they paid 17K and 25K, with the basic fee of 6500, but there are a lot of other requirements, many of which require property adjustments. They did use a service to obtain the 3BR+ permit, which may have added to the cost (but taken away a lot from the headache).

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