Third Party Management New

Third-party management

Your facility.
Expert-managed.

TNT Self Storage Management has been operating facilities since 1977. We handle everything — staffing, marketing, accounting, and daily operations — so you can focus on what matters most.

75+

FACILITIES

MANAGED

48+

YEARS IN

OPERATION

5

STATES: AZ, CA,

HI, TX, UT

WHY TNT

A complete management solution

We're one of the first fee management companies in the United States — and one of the most experienced. Our turnkey approach means no gap goes unaddressed.

Proven people & culture

Over 60 years of combined hands-on experience between our founders. Staff are hired, trained, and managed through our own leasing company

Revenue-maximizing systems

Sophisticated revenue management software, dynamic rate setting, and ongoing marketing programs designed to increase occupancy and profit.

Lender-trusted operations

TNT currently manages a number of bank-owned properties and is always ready to step in for immediate management transitions.

Transparent reporting

Clients have full access to all records. Annual budgets are owner-approved and built on 12-month cash flow projections from day one.



OUR SERVICES

Everything your facility needs

From staffing and accounting to marketing and mystery shopping — TNT handles the full operational picture.

  • Staffing & HR
    • Hire, train, and manage all on-site employees. Handle payroll, benefits, health insurance, and HR records through Total Storage Solutions.
  • Financial management
    • Full-service accounting from annual budgets to daily payables and receivables. Owner-approved budgets based on 12-month cash flow projections.
  • Marketing & advertising
    • Web design, SEO, call center support, and all printed promotional materials — built to maximize your income and online visibility.
  • Property maintenance
    • Direct oversight of all maintenance, upkeep, and repairs. Quarterly maintenance logs kept for full accountability.
  • Dedicated call center
    • Handles all after-hours calls and contacts delinquent tenants — proven results in both sales conversion and collections.
  • Vendor contracts
    • Negotiate and manage all vendor and service contracts. Master insurance plan with industry-leading coverages at significant savings.



WHAT OUR CLIENTS SAY

Trusted by owners and lenders alike

From long-term facility owners to banking partners, the feedback is consistent.


Trusted by owners and lenders alike
"I contracted TNT to operate my mini-warehouse in El Monte since 1996 — that's 20 successful years. Both gross revenue and profits have more than doubled. I could not be more pleased with TNT Management."
by Roland Rebele — El Monte Mini Warehouse, General Partner
What Our Customers are Saying
Dianne takes a hands-on approach and is intimately familiar with all properties under the TNT umbrella. TNT's accounting systems are well designed, leading to smooth and timely closes."
by Peter — Royal Bank of Scotland, Lender
What Our Customers are Saying
"TNT Management is all about the people. From property owners to customers to employees, everyone is treated in a professional, respectful, and cheerful manner."
by Ramon & Linda Sandoval — Facility Managers



Leadership

The people behind the company

Dianne Tanna

Dianne Tanna

Co-Founder & Owner

Dianne has been in the self storage industry since 1975. She rose to VP at Linkletter Properties, where she developed and managed over 70 facilities across Southern California. After founding Tanna and Company in 1989, she partnered with Ray Tuohy in 1997 to launch TNT Management. She has served multiple terms on the regional board of the Self Storage Association and is a founding member of the Storage Operators Network of Southern California.


Ready to talk management?

We'll develop a detailed budget with you before any commitment.