Locally Owned · Big Coppitt Key · Lower Keys
Storage Made for the Keys.
Climate-controlled self storage plus 24/7 boat, trailer, RV and vehicle storage in Big Coppitt Key, serving Key West and the Lower Keys.
Save for Your First 3 Months.
New renters get our introductory rate for the first three months — no tricks, no hidden fees. The regular rate kicks in after that, shown clearly up front.
Approx. 4 × 4
4.3 × 4.3 ft exact · 18.5 sq ft
first 3 months
then $89/mo
Perfect for a few boxes, seasonal items, or extra closet overflow.
Reserve This Unit8 × 10
8 × 10 ft exact · 80 sq ft
first 3 months
then $219/mo
Our most popular size. Fits a full one-bedroom apartment — furniture, boxes, and all.
Reserve This Unit10 × 10
10 × 10 ft exact · 100 sq ft
first 3 months
then $259/mo
The full 10×10. Fits a two-bedroom home, a full garage, or serious business inventory.
Reserve This UnitIntroductory rate applies to new rentals only. Regular rate shown clearly.
Available Units
Real inventory, updated manually. What you see is what's available.
Approx. 4 × 4
Exact dimensions: 4.3 × 4.3 ft
First 3 months — then $89/mo
Approx. 4 × 4
Exact dimensions: 4.3 × 4.3 ft
First 3 months — then $89/mo
Material lift available for belongings. Upper-floor customer access is by stairs.
Approx. 5 × 5
Exact dimensions: 5.3 × 5 ft
First 3 months — then $109/mo
Approx. 5 × 5
Exact dimensions: 5.3 × 5 ft
First 3 months — then $109/mo
Material lift available for belongings. Upper-floor customer access is by stairs.
Approx. 6 × 8
Exact dimensions: 6 × 8.5 ft
First 3 months — then $149/mo
Material lift available for belongings. Upper-floor customer access is by stairs.
Approx. 5 × 10
Exact dimensions: 5.5 × 10 ft
First 3 months — then $159/mo
Material lift available for belongings. Upper-floor customer access is by stairs.
Why Store With 678 Storage
The convenience of a big facility with the personality of a local business.
24/7 Tenant Access
Get to your unit any time, day or night — every day of the year.
Climate Controlled
All 86 indoor units stay temperature and humidity controlled, year-round.
Local, Not Corporate
Call or text a real local number — no national call center runaround.
Clean, Modern Facility
A well-maintained, modern building built for life in the Florida Keys.
Gated & Secure
Fenced property, recorded video cameras, and individual access codes.
Flexible Storage Options
Indoor and outdoor storage, month-to-month, sized to fit what you need.
Standard Outdoor Space & Large Outdoor Space
Boat, Trailer & Vehicle Storage Near Key West
Secure gated outdoor storage right on the Overseas Highway.
Standard Outdoor Space
8 × 10
Large Outdoor Space
8 × 20 to 22 ft
first 3 months — then $325/mo
Built for Life in the Lower Keys.
Modern, clean, and designed to protect what matters.
Climate-Controlled Storage
All indoor units maintain controlled temperature and humidity year-round.
Recorded Surveillance
Security cameras cover the property and record continuously.
Individual Access Codes
Each tenant gets their own unique gate and unit access code.
Fire Protection
Sprinkler system throughout the indoor facility.
Well-Lit Property
Good lighting throughout the facility and parking areas.
Material Lift
Material lift available for moving belongings between floors. Upper-floor customer access is by stairs.
Carts & Dollies
Carts and dollies available to make loading and unloading easier.
Pest Control
Regular pest control keeps the facility clean and protected.
Not Sure What Size You Need?
Answer a few quick questions and we'll point you to the right unit.
Select what you're storing to see recommendations.
Storage in Big Coppitt Key, Minutes Outside Key West
On the Overseas Highway near Mile Marker 10, Big Coppitt Key
Serving Key West, Stock Island, Boca Chica, Geiger Key, Sugarloaf Key, Cudjoe Key, and the Lower Keys.
323 Overseas Highway, Key West, FL 33040
Common Questions
Answers to what most people ask before they rent.
What are the access hours?
Tenants have 24/7 access to their units — every day of the year. You can get in early morning, late at night, weekends, and holidays. Local support is available by call or text from 9 AM to 9 PM daily.
Are the indoor units climate controlled?
Yes. All indoor storage units at 678 Storage are climate controlled. In the Florida Keys, this matters — heat and humidity can damage furniture, electronics, documents, and clothing. Climate control keeps your belongings in good condition year-round.
Do you offer boat storage?
Yes. We have outdoor spaces for boats on trailers, jet skis, and personal watercraft. The property is gated, fenced, and covered by recorded video surveillance. Outdoor tenants have 24/7 access.
Is there an elevator?
There is a material lift available for moving your belongings between floors — great for heavy boxes and furniture. Customer access to upper floors is by stairs. The material lift is for your belongings, not for riding.
Can I rent online?
Yes. You can start your rental process online by submitting your information through our website. We'll get you set up quickly. Call or text (305) 906-0703 from 9 AM–9 PM if you prefer to get started by phone.
What size unit do I need?
It depends on what you're storing. Our smallest units (around 4×4) work for seasonal items and extra boxes. An 8×10 fits most one-bedroom apartments. Larger 10×10 and 15×10 units handle full homes or business inventory. Check our Size Guide for a full breakdown, or call us — we're happy to help you find the right fit.
Need Space? We'll Find the Right Fit.
Call, text, or browse available units online. Local help is only a message away.