How I Got a Mission Beach Airbnb License by Splitting My Townhome

If you've looked into buying an Airbnb in Mission Beach, you've probably hit the same wall everyone does: the whole-home licenses are gone.

Mission Beach has its own license tier, and the city isn't taking new whole-home applications. For most buyers, that's where the conversation ends.

It didn't end there for me. I split my Mission Beach townhome into two spaces, lived upstairs, and short-term rented the downstairs lock-off under San Diego's home sharing license. The rental income covered my mortgage. I was cash flowing and living mortgage free, steps from the beach and the bay.

Here's exactly how it worked, and what I'd tell anyone thinking about doing the same.

Why Mission Beach Airbnb Licenses Are So Hard to Get

The City of San Diego requires a Short-Term Residential Occupancy (STRO) license for any rental under one month. There are four tiers:

• Tier 1: Rent the home 20 days a year or less
• Tier 2: Home sharing, where you rent part of your home while you live there
• Tier 3: Whole home, anywhere in the city except Mission Beach (capped)
• Tier 4: Whole home in Mission Beach (capped)

Tier 4 is the one everyone wants in Mission Beach, and the application period is closed. Licenses also don't transfer when a property sells, so buying a home that already has an Airbnb doesn't get you its license.

Tier 2 is different. It has no cap. If you live in the home as your primary residence, you can apply for a home sharing license in Mission Beach just like anywhere else in the city.

That was my way in.

How Tier 2 Home Sharing Works

The basic rules for a Tier 2 license:

• The home has to be your primary residence at least 275 days a year
• You rent out a room or rooms while you live there
• You need a Transient Occupancy Tax (TOT) certificate and a Rental Unit Business Tax account before you apply
• You post a notice on the outside of the home with your license and contact info
• You include your license and TOT numbers on every listing

It costs a fraction of what a whole-home license costs, and the city doesn't limit how many it issues.

The catch is that you really have to live there. Not on paper. Actually live there.

How I Split My Townhome Into Two

My townhome had a layout that lent itself to this. The downstairs could function as its own space with its own entrance, separate from the upstairs where I lived.

Think of it like a hotel suite with a connecting door. It's one home, but it can lock off into two private spaces when you need it to.

A few things made this work:

• A separate entrance. Guests came and went without walking through my space, and I didn't walk through theirs.
• A lock-off, not a second unit. The downstairs had no oven or full kitchen. It was a private suite within my home, not a separate apartment. That distinction matters, because it's what kept it in home sharing territory rather than turning it into an ADU or a second dwelling unit, which come with their own rules.
• No construction approvals needed. In my case, the layout was already there. I didn't need permits to make it work.

Your property may be different. If you're thinking about adding a kitchen, a wall, a door or anything structural, talk to the city or a permit expediter first.

How the Numbers Worked

This is the part people ask me about the most.

Mission Beach is one of the strongest short-term rental markets in San Diego. Visitors want to be steps from the sand and the bay, and there's a limited supply of legal rentals because of the license cap.

That combination meant the downstairs earned enough to cover my mortgage. I was cash flowing, and I was living in Mission Beach mortgage free.

I won't share exact numbers, because every property, layout and season is different. But here's how I'd think about it for your own property:

1. Start with your all-in monthly cost: mortgage, taxes, insurance, utilities and HOA dues if you have them
2. Estimate realistic short-term rental income for the space you'd rent, based on comparable listings, not best-case summer rates
3. Subtract operating costs: cleaning, supplies, platform fees, occupancy tax, maintenance and furnishing
4. Compare what's left to your housing cost

If the rental covers most or all of your payment, you're not just buying a home. You're buying a home that pays for itself while you live in it.

What It's Actually Like Living Above Your Guests

Here's the part nobody tells you.

I was overly sensitive to the noise I was making upstairs. Every footstep, every time I dropped something, every late night or early morning, I was thinking about the guest below me. I wanted them to have a great stay, and I didn't want my everyday life to be the reason they left a bad review.

Looking back, I'd tell anyone doing this:

• Know yourself. If you'll feel like a guest in your own home, factor that in.
• Soften the space. Rugs, felt pads on furniture and soft-close cabinets go a long way.
• Set expectations in the listing. Being upfront that the host lives upstairs attracts guests who are fine with it.
• Think about layout. A side-by-side split usually carries less noise than an up-and-down split.

It was worth it. But it's a real lifestyle tradeoff, not just a spreadsheet decision.

From Tier 2 to Tier 4

While I was living there and running the home share, I was also on the Tier 4 waitlist. When my name came up, I got the Mission Beach whole-home license.

That changed the property from a house hack into a full short-term rental. Today it operates as a whole-home rental as part of The Carmine Collection.

The Tier 4 waitlist application period has since closed, so that path isn't open to new buyers right now. But Tier 2 still is.

Is This Strategy Right for You?

This works best if:

• You actually want to live in Mission Beach, or wherever you're buying
• The property has a layout that can split into two private spaces with separate entrances
• You're comfortable sharing your home with guests
• You plan to hold the property long enough for it to make sense

It's probably not for you if you want a pure investment property you never live in, or if you value total privacy at home.

And remember, this isn't just a Mission Beach strategy. Tier 2 home sharing applies across the City of San Diego, so the same idea can work in Pacific Beach, Point Loma, Ocean Beach, North Park and beyond. Outside the city limits, every city in San Diego County has its own rules.

Thinking About Buying a House Hack in San Diego?

I've done this myself, I own and operate short-term rentals across San Diego, and I help buyers find properties that can actually work as Airbnbs, from running the numbers to setting the place up and launching it.

If you're looking at a home with a lock-off, a split layout or a space you think could earn income, reach out. I'm happy to look at it with you and tell you honestly whether it pencils.