Sensei, Answer My Questions: A Developer's FAQ with a Self-Storage Feasibility Expert

I get the same questions on almost every discovery call, whether I'm talking to a first-time developer with a piece of dirt and a dream, or a seasoned operator eyeing their fifth facility. That's a good thing. It means developers are starting to ask the right questions before they buy land, pour concrete, or sign a construction loan.

So I pulled together the questions I hear most often and answered them the way I'd answer them in an actual self storage feasibility study - straight, sourced, and without the sugarcoating. Grab your coffee or your energy drink, and let's go.

Market Demand and Competition

How many square feet of storage exist per person in the trade area?

This is the single number most developers ask about first, and for good reason. Per capita self storage supply data tells you how saturated a market already is. The national average hovers around 7 to 8 square feet of storage per person, but that number means almost nothing on its own - it only matters relative to your specific trade area.

A market sitting at 4 square feet per capita with strong population growth is a very different opportunity than a market sitting at 12 square feet per capita with flat growth. I pull this figure directly from verified facility inventories, not from a guess or a national headline, because a bad per capita number built on incomplete supply data will sink an otherwise good site.

Who are the main competitors and what are their current rental rates?

Every self storage market analysis I run starts with boots-on-the-ground (or at least eyes-on-Google-Street-View) competitive intelligence: every existing and proposed facility within the trade area, their unit mix, their current street rates by unit size, their occupancy if I can get it, and how they're positioning themselves online. Rate alone doesn't tell the story - I want to know if competitors are running promotions to mask soft occupancy, or if they're raising rates because they're genuinely full.

Is the local population growing or shrinking?

Growth trajectory changes everything about how a project gets underwritten. A shrinking population doesn't automatically kill a deal, but it does change your lease-up assumptions, your rate growth assumptions, and honestly, how aggressive I let a client get on unit count. I pull five-year historical trends and forward projections, not just a single snapshot year, because one good or bad year can be noise rather than signal.

How many people live in a 3-mile and 5-mile radius?

This is core to any self storage demand calculator or demand metrics model worth its salt. Self-storage is a convenience-driven business - most renters live or work within a few miles of the facility they choose. I run population counts, household counts, and density at both the 3-mile and 5-mile rings (and sometimes drive-time rings instead of straight-line radii, when road networks or natural barriers like rivers or highways distort a simple circle) because a site that looks great at 5 miles can look thin at 3, and that difference matters for lease-up speed.

Site and Location

Is the property visible and easy to access from a main road?

Self-storage is an impulse-adjacent purchase for a lot of renters - someone driving by, noticing a sign, and thinking "oh, I need that." Visibility from a well-traveled road, easy ingress and egress (especially for anyone towing a trailer or driving a moving truck), and a site that doesn't require three turns down a back road all matter more than people expect going in. I've seen beautifully positioned-on-paper sites underperform for years simply because the curb cut made access a headache.

What is the traffic count passing the site each day?

I pull Average Annual Daily Traffic (AADT) counts from state DOT data for the road frontage, and I look at it alongside visibility and speed limit, because 20,000 cars a day doing 55 mph past a site set back from the road isn't the same opportunity as 12,000 cars a day at a stoplight with a clear sightline. Traffic count is a data point, not a verdict - it has to be read in context.

Does local zoning allow a self storage business on this land?

This sounds basic, and it is, but I still see developers under contract on land before confirming this. I verify current zoning, whether self-storage is a permitted use or requires a conditional use permit or variance, and whether there's a pending rezone or comp plan update that could change the picture before your project is even built. A site with everything else going for it is worthless if the entitlement path doesn't pencil.

Are there height or building design limits in the city?

Multi-story facilities have transformed the economics of self-storage in dense or expensive markets, but not every jurisdiction allows them, and plenty of cities layer on architectural standards - masonry percentage requirements, roofline articulation, landscaping buffers, signage restrictions - that add real cost. I confirm height limits, setback requirements, and design review standards early, because they directly affect your buildable square footage and your construction budget.

Financials and Operations

What is the estimated cost to build per square foot?

Construction costs vary by market, building type (single-story drive-up versus multi-story climate-controlled), site conditions, and current material and labor pricing, so I don't hand clients a generic number pulled from an industry average. I build project-specific cost estimates using current regional data and, where possible, actual contractor bids, because a per-square-foot number that's off by even a few dollars can swing a project's return meaningfully.

How long will it take the facility to fill up to 85% occupancy?

Lease-up timing is one of the most misunderstood variables in self-storage development. I model absorption based on the trade area's demonstrated demand, the competitive supply pipeline (including facilities that are proposed or under construction, not just built), and realistic monthly unit absorption rates - not the optimistic version a lender or a broker might want to see. Most stabilized facilities take somewhere in the two-to-four-year range to reach 85% occupancy, but that range moves a lot depending on market conditions, and I'd rather tell a client an honest 36 months than a hopeful 18.

What rental rate per square foot can the project achieve?

This comes straight out of the competitive analysis, adjusted for your specific unit mix, climate control versus non-climate, and where your facility sits relative to competitors on quality and location. I project rate by unit type and size, not just one blended average, because that blended number can hide weakness in a specific unit category that ends up dragging on overall performance.

What is the expected return on investment over a 5-year period?

This is where everything comes together into a full pro forma: development costs, financing assumptions, lease-up timeline, stabilized rental income, operating expenses, and exit assumptions, modeled out year by year. I always run a base case alongside a conservative case, because a project that only works under best-case assumptions isn't a project - it's a bet. My job is to tell you honestly whether the numbers support building, buying, or walking away.

Why This Matters

Every one of these questions gets answered inside a proper self storage feasibility study, and I package the underlying data - population counts, per capita supply, competitor rates, traffic counts, zoning confirmation, cost estimates, absorption timelines, and ROI projections - into what I call a self storage snap report: a fast, data-backed gut check for developers who need clarity before they go deeper into full underwriting.

If you're staring at a piece of land or an acquisition target right now and any of these fifteen questions gave you pause, that's exactly the sign you need a feasibility study before you go further, not after.

Until next time -

Sensei Katherine