How to Choose the Right Storage Unit Size | TGI Storage San Marcos

Published on 7/4/2026
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Storage Tips · San Marcos, TX

How to Choose the Right Storage Unit Size

TGI Storage San Marcos · 6 min read

San Marcos, TX has one of the most diverse storage-renting populations in Central Texas — students, young professionals, growing families, and businesses all have different needs and all make the same mistake of guessing at their unit size rather than estimating it properly.

Storage in San Marcos — One Size Does Not Fit All

San Marcos has a uniquely diverse storage market — Texas State University students who need a small affordable unit for semester breaks, young professionals moving between apartments who need temporary household storage, families combining households or going through a home sale, and the growing business community with inventory and equipment needs. The right unit size for each of these situations is completely different — and choosing wrong costs money and creates real practical problems. TGI Storage San Marcos offers the full range of unit sizes to match every situation, and our team is ready to help you identify the right one before you move a single box.

Standard Unit Sizes and What They Actually Hold

Here is a practical guide to what each standard unit size accommodates so San Marcos renters can make an informed decision rather than guessing.

5x5 — The closet
Perfect for a Texas State student storing semester items boxes of books small furniture and personal gear. Also ideal for San Marcos apartment dwellers adding seasonal overflow storage.
5x10 — The dorm room
The most popular student size. Holds a full dorm or studio apartment contents — mattress set small furniture boxes appliances and the outdoor gear that San Marcos's active lifestyle demands.
10x10 — The apartment
The most popular overall size. Holds a full one-bedroom apartment including furniture appliances and boxes. The standard choice for moves between leases and temporary storage during San Marcos transitions.
10x20 and larger
Full household storage for home sales renovations and large moves. Also accommodates larger business inventory setups. Fits the contents of a two to three bedroom San Marcos home comfortably.

San Marcos Storage Situations and the Right Unit

Texas State student storing between semesters: 5x5 for a light load; 5x10 for a full dorm or studio including furniture. Students living in San Marcos year-round who need ongoing overflow: 5x5 is usually enough. San Marcos professional between apartments: 10x10 handles a full one-bedroom apartment comfortably. Two-bedroom apartment: 10x15. River and outdoor gear storage: Kayaks paddleboards bikes and camping equipment typically need a 5x10 minimum; a 10x10 gives room to organize properly with shelving. San Marcos home seller staging: 10x15 to 10x20 depending on how much furniture is being cleared. E-commerce seller or small business: 10x10 to 10x20 depending on inventory volume. Call (512) 722-7228 and TGI Storage San Marcos will size your unit based on your specific list.

Packing Smart to Get More From Any Size Unit

In San Marcos's active rental market where space is always at a premium the ability to maximize a smaller unit can save meaningful money every month. Start by disassembling all furniture — bed frames tables and shelving become much more space-efficient when broken down and stored flat. Use medium-sized uniform boxes and fill each one completely before sealing. Install a freestanding shelving unit along the back or side wall before loading — this single move can effectively add 30 to 40 percent more usable storage volume to any unit. Load heaviest items on the floor. Place items you will need access to most frequently near the door. Leave a walking path down the center so you can reach the back without moving everything in front of it.

Quick Size Selection Checklist
Write a complete list of everything you plan to store before choosing a size
If deciding between two sizes choose the larger one — peace of mind is worth the difference
Disassemble all furniture before loading to maximize every square foot
Consider climate control for electronics instruments and sensitive items in Central Texas heat
Call TGI Storage San Marcos — our team sizes units based on your actual list every day

Find the Right Size for Your San Marcos Storage Needs

TGI Storage San Marcos offers a full range of storage unit sizes in San Marcos, TX — and our team is here to help every renter find the right fit before move-in day. Call (512) 722-7228 today with your list of what you plan to store and let us recommend the right unit size so you are not overpaying or underpacking from day one.

Ready to Get Started?
TGI Storage San Marcos offers clean, secure, and flexible storage in San Marcos, TX.
Call (512) 722-7228