free
Self-Storage Offer
Range Calculator
Know Instantly If a Deal’s Worth It or a Waste of Time
Stop Guessing. Start Moving.
Most new investors waste hours analyzing the wrong deals.
You don’t need another complicated spreadsheet. You need clarity. Fast.
This free calculator gives you the power to:
✅ Know your offer range in minutes
✅ Submit with confidence
✅ Walk away without overthinking
✅ Find the hidden winners in a crowded market
What You'll Get (For free)
Mobile-Friendly, Plug-and-Play Calculator: No logins, no fluff, just input your numbers and get instant
Downloadable PDF Format: Perfect to send directly to brokers, sellers, or partners.
Built-In Offer Range Guidance: This tells you what you should pay and when to walk away.
Works for Stabilized & Value-Add Deals: Whether it’s turnkey or a fixer-upper, this tool adapts.
Unlock Real Opportunities: Forget “maybe.” This gives you real numbers, real fast—so you can take real action.
Who This Is For
You’re tired of overanalyzing and second-guessing every deal
You want to learn to underwrite like the pros, without overcomplicating it
You’re ready to make offers, not just talk about investing
You want to stand out with brokers and sellers (with speed & certainty)
Why This Tool Works (And Most Don’t)
“This is the same tool I used when I bought my first storage facility. I still use it today to underwrite 20+ deals a week.”
— Bree Hartman, Founder of Self-Storage School
✅ Designed by real operators who buy storage, not spreadsheet gurus
✅ Gets you to a YES or NO in less than 5 minutes
✅ Makes you look sharp and credible to brokers, even if you’re new
You’ll get immediate access to:
✅ The Self-Storage Range Calculator
✅ A sample deal breakdown
✅ Step-by-step video to help you use it fast
Don’t Be the Person Who Misses a Good Deal Because You Froze
Confidence doesn’t come from knowing everything. It comes from having the right tools at the right time.
This is one of those tools.
Meet the founder of Self-Storage School
Bree Hartman
Bree Hartman is a former fitness gym owner turned full-time Commercial Real Estate Investor for Infinite Returns Investments and Storage House Group LLC.
Starting with what she dubbed an "accidental rental," Bree saw a golden opportunity not just to grow her portfolio, but to reshape her life. With the birth of her daughter on the horizon and her sights set on time freedom, she dove headfirst into the self-storage industry in 2021, all while running her gym.
Fast forward 12 months: Bree’s tenacity led her to own two out-of-state self-storage facilities, now boasting 351 units over 83,000 sqft in Louisiana.
Now, Bree is on a mission to teach real estate investors how to break free from the daily grind by finding, funding, and operating their first unmanned self-storage facility—from anywhere in the world.
