Landlords estimate a vacancy rate and keep that amount in reserves. However, they all earn more money if it's not vacant. It's almost never the case that they can make more money by keeping the rent high and units vacant.

Also, is they are using a property management company (which surprisingly many do), then turnovers are likely more expensive for the landlord than the tenant's cost to move - they usually charge 50% of one month's rent to find a new tenant for you.

If they're too optimistic in that vacancy rate, they will lose money.

For anyone thinking landlords have all the power, hang out on real estate forums. After all expenses (including vacancy), most RE investors target $100-200/month per unit. Now often, over several years, if rents shoot up in the city, they'll make good money from the increased rent. But they don't rely on that - their usual hope is the property's value will go up so they can sell it one day. The landlords who make huge piles of money are outliers. The vast majority of landlords do not make anything close to a SV SW developer and are not aiming to (of course, though, whatever they do make is almost "free", which makes the difference to them).

The top skill for a landlord is to estimate costs. At $100-200/unit, if they underestimate a lot, they are out of business. Surprisingly, most do not carry vandalism insurance. So if a disgruntled tenant trashes a place, they could easily lose the property. If they do not reserve money for evictions, they could easily lose the property.

That is the very definition of an outlier. Most landlords (easily over 90%) don't even have a 100 units. In fact, most landlords have a target number of units they need to "retire", and that number is usually less than 100.

Hypothetically, if 1 company managed 1,000 units and 1,000 people managed 1 unit then that outlier owns 50% of the market while representing 0.1% of the land lords.

Also, keep in mind that on the flip side, landlords likely view tenants the same way - looking at aggregates and not individuals: "Yes, lots of people can't afford the rent, but as long as I can get enough to make a profit, who cares about the rest?"

Unless they can hold out until property values rise and they can sell for a profit.

Sure, if they've got piles of cash sitting around to pay for the loan, insurance and real estate taxes.

Here's another tidbit people don't understand. If the property has more than 4 units, the value of the property is determined almost entirely by the revenue it generates.[1][2] The bank who will provide the loan to the buyer will look at those numbers, and the buyer will look at those numbers. In particular, what people will not look at are the comps (the value of nearby properties). So a "Let's lose money until the property values go up" strategy won't work there.

[1] https://theresabradleybanta.com/value-a-multi-unit-property/ [2] https://www.biggerpockets.com/blog/2016-07-06-multifamily-re...

actually, that's pretty straightforwardly "income-based valuation", and it's logical because having more than 4 units means the property is primarily a business and not primarily a residence. businesses are valued by the income (i.e., profits) they generate. the sales comparison method (employing "comps") is primarily used with residences because the more accurate income-based valuation isn't available to residences, as non-income-generating assets. (the third valuation method is cost approach, which is used as a primary method of valuation in markets with low turnover/few comps, and in many tax assessment jurisdictions).

Do you have any data on how long properties are vacant? And if they’re vacant, are they vacant for a reason like renovations or construction?

Every landlord I’ve ever had has wanted to rent their place quickly. They hate missing a month.

This would have required me to take a huge loss on the property, which I would have had to pay out of pocket, to the tune of tens of thousands of dollars, which I did not have. I would have preferred to never rent at all.

If you can't raise rents, you'd be less likely to react to lower market rents. So prices stay sticky on the way down. Even if the laws are not in place now, there is a risk of them being in place in the near future and you'll be stuck at below market rents.

Also if you can't remove tenants then you'd be more selective and naturally that would increase vacancy rates.

A high vacancy rate doesn't prove that its not expensive to fill a rental. In fact higher vacancy rates means losing a tenant is even greater than if there were low vacancy rates. That means that an empty apartment is going to stay on the market even longer. And most landlords have some debt arrangement, are paying interest, taxes and insurance in addition to forgoing rental income.