Buying a house in San Luis Obispo to rent it out has always been a long-term bet. With mortgage rates back above 7% and rents slipping, the math right now is about as hard as it gets. We ran the numbers on a typical SLO home, and you can run your own in the calculator below.
The setup
- Price: $1,086,045, Zillow’s typical home value for the City of San Luis Obispo (August 2026)
- Down payment: 25% ($271,511), the usual minimum for an investment property loan
- Rate: 7.40%, this week’s 30-year fixed average. Investment property loans usually cost more than that average, so this is the best case.
- Rent: $2,973 a month, Zillow’s typical rent for the City (August 2026)
- Property tax: about 1.1% of the price; insurance: $2,400 a year (the same assumptions as our market page; landlord policies often cost more)
The bare minimum: mortgage, tax and insurance
| Monthly | |
|---|---|
| Principal & interest | $5,640 |
| Property tax | $996 |
| Insurance | $200 |
| Total | $6,836 |
| Rent | $2,973 |
| Monthly shortfall | −$3,863 |
Before a single repair, vacancy or management fee, the owner is putting in about $3,900 a month, or about $46,000 a year.
With the real costs of being a landlord
Add the costs most investors budget for: 5% vacancy ($149 a month), 8% property management ($238) and 1% of the home’s value a year for maintenance and big repairs ($905). Monthly costs rise to about $8,127, and the shortfall to about $5,150 a month, or nearly $62,000 a year.
To break even on those numbers, the home would need to rent for about $8,900 a month, three times typical SLO rent. Even if a house rented for double the typical rent ($5,946), it wouldn’t cover the mortgage, tax and insurance alone.
Flip it around: at today’s rent and rate, the most you could pay for a rental and break even on mortgage, tax and insurance is about $454,000. With vacancy, management and repairs included, it’s about $344,000. That’s less than a third of the typical City home value.
Doesn’t appreciation make up for it?
Not right now. In the first year the owner pays down about $7,700 of principal. If the home gains 1.8% in value, its pace over the past year, that’s another $19,500. Together that’s about $27,000 of paper gains against $46,000 to $62,000 of cash out of pocket. The investment only works if values rise much faster than they have lately, and that’s a bet, not a plan. Depreciation and other tax rules can soften the loss; how much depends on your situation, so talk to a tax professional.
Paying cash doesn’t fix it either. With no mortgage, the home earns about $5,800 a year after expenses, a return of roughly 0.5% on more than a million dollars.
What about a condo?
Condos are cheaper but not cheap. The median asking price for a condo in ZIP 93401 is about $729,000. With 25% down at 7.40%, principal, interest and tax come to about $4,450 a month before insurance and HOA dues, still roughly $1,500 above typical rent.
Who it can still work for
- Owners who bought years ago. A low purchase price, a low locked-in rate and a Proposition 13 tax bill can make a SLO rental cash-flow well. That’s the position many long-time local landlords are in.
- Adding an ADU to a lot you already own. No land cost changes the math completely. Our ADU guide covers sizes, fees and permits.
- Living in it. Owner-occupied loans carry lower rates and smaller down payments, and renting a room or an ADU can offset part of the payment.
- Long-horizon cash buyers who accept a very low yield in exchange for owning in a place where homes have historically held value.
A short-term rental isn’t a workaround inside the City: whole-home vacation rentals are banned, and homestays require the owner to live there. See our short-term rental guide.
The bottom line
At a 7.40% rate, a typical SLO home rents for well under half of what it costs to own. Rents are softening, not rising, so they won’t close the gap soon. For now, buying a SLO rental is a bet on appreciation that requires deep pockets to carry. That could change if rates fall, prices drop further, or both. We’ll rerun these numbers as the data moves.
Try a specific property, a bigger down payment or a lower rate in the calculator below.
Sources: Zillow Research (typical home value, ZHVI; typical rent, ZORI; City of San Luis Obispo, August 2026); Freddie Mac Primary Mortgage Market Survey (week of Oct. 8, 2026); Redfin, ZIP 93401 (condo listings, Oct. 8, 2026). Vacancy, management and maintenance figures are common rules of thumb, not local data. This is an illustration, not investment advice.