Amid a Multifamily Boom, This Self-Storage is the Gift That Keeps on Giving

If you’re tired of evictions, repairs, and city inspectors, but love the idea of passive income, tax breaks, and appreciation, self-storage might be the investment play that’s been hiding in plain sight, while you’ve been chasing the next cash-flowing residential rental.

That could be about to change, because self-storage has been growing faster than a batch of toadstools after a rainstorm. Over the past decade, the U.S. self-storage sector has expanded from about 1.4 billion to almost 2 billion rentable square feet, increasing by over 500 million square feet. According to Yardi Matrix data, the expansion has been closely linked to the rise in Sunbelt multifamily housing development in burgeoning cities such as Houston, Dallas, Austin, and Phoenix.

Granted, self-storage is not as “sexy” as residential real estate. There’s no interior design, and no HGTV shows. Still, if you are looking for something steady and predictable without the drama of being a landlord, self-storage could be worth considering.

It goes in tandem with multifamily real estate because as apartments have been stretching far and wide across the Sunbelt, apartment sizes have been shrinking, ushering in the need for more self-storage. “Houston apartments built from 2015 onward have shrunk by 44 square feet on average …while 5.3 million square feet of storage were added locally,” a recent analysis from national storage space marketplace StorageCafe finds.

It’s a pattern that repeats across the Sunbelt in cities in Florida and Texas, where, along with North Carolina, RentCafé reports that self-storage inventory is expanding at the fastest pace since 2014, with some markets quadrupling capacity.

Amid a housing boom of shrunken apartments, Americans are proving stubborn downsizers. “Self-storage has quietly become the backbone of this new reality,” a StorageCafe analyst told The Real Deal.

A Stable Investment

Like much of the real estate industry, self-storage experienced a post-pandemic surge and has now returned to a more stable, sustainable growth, according to Yardi. Owners of self-storage units in 2020 and 2021 saw occupancy rates drop below 3% vacancy, while rents shot up 40% in some areas, said commercial brokerage CBRE. This trend occurred as remote working gained in popularity and employees left their homes for other locations.

In 2023-2024, the market stabilized amid higher interest rates and slower housing turnover, and this year, signs of normalization have emerged. In Q1 2025, CRE Daily reports that self-storage transaction volume climbed 37% year over year to $855 million due to renewed investor appetite.

However, self-storage is still vulnerable to market conditions, with cap rates currently around 5.5% to 6.5% and development pipelines thin due to tighter borrowing conditions and increased development costs, according to commercial brokerage Cushman & Wakefield, which stated that “elevated construction costs and a lack of debt liquidity have pushed down new development levels to more normalized levels,” indicating that the market is finding equilibrium again.

Why Self-Storage Still Appeals to Investors

Self-storage is not a new concept. It’s been around for decades, and despite fluctuations in the residential real estate market, it has proved to be perennially popular. Here are some of the reasons for its staying power.

Diversified use

Demand is not limited to relocation, new babies, divorce, or death. Many people with storage units choose them to alleviate clutter in their homes and garages. Indeed, 1 in 3 Americans now rent a storage unit, and a further 18% plan to do so in the future, according to StorageCafé—offsetting the lulls in short-term and mid-term rental housing.

Flexibility

As storage leases are typically month-to-month, landlords can adjust prices quickly to accommodate demand, setting it apart from conventional commercial buildings.

Low overhead

There is little ongoing maintenance compared to residential real estate or retail buildouts. Repairs are daily and predictable and do not require delicate negotiations around tenant occupancy.

Fewer headaches

Tenant disputes are rare due to the type of asset class self-storage falls into and the straightforward lease agreements.

Room to Grow

The Sunbelt dominates U.S. self-storage markets. Atlanta led the charge, with new deliveries, topping 1.5 million rentable units in H1 2025, according to Multi-Housing News, with Phoenix, Los Angeles, Tampa, Houston, and Chicago also making the top 10 in new inventory additions.

Investing in Self Storage

Large REITs such as CubeSmart, Public Storage, and Extra Space Storage are dominant in the self-storage space and offer the lowest barrier to entry. Investing is like buying any stock.

However, if you want to buy and set up your own self-storage space, there are several loan options, such as a conventional commercial loan, an SBA loan, and a CMBS (commercial mortgage-backed security) loan, which is turned into a security or bond and sold to investors on the secondary market. Rental opportunities are always featured on commercial listing sites like loopnet.com or crexi.com under “industrial.”

An Ongoing Attraction for Small Investors

Small investors have flocked to self-storage in recent years as an alternative to residential real estate. Needless to say, several gurus with courses and training programs, such as Mike Wagner’s Storage Rebellion and AJ Osborne’s SelfStorageIncome.com, are ready to accommodate the ever-growing legion of interested parties looking for an alternative to conventional landlording.

Final Thoughts

Self-storage was invented by mom-and-pop investors, who took commercial spaces and added doors to them. Now it is dominated by Wall Street titans, and opportunities tend to be thin on the ground. However, the continual demand for storage space makes it a growing asset class.

As older mom-and-pop investors age out and developers and investors construct new facilities, opportunities arise. However, as with any investment, choosing a market with high demand, obtaining municipal approval, avoiding overleveraging, and quickly filling units are the keys to success.