Account
490 Main St
Mashpee, MA 02649
Phone: 508-539-7900
Email: flagship@sunselfstorage.com
Office Hours:
Monday – Friday: 9:00 AM – 5:00 PM
Saturday – Sunday: 9:00 AM – 4:00 PM
Access Hours:
Monday – Sunday: 6:00 AM – 9:00 PM
Flagship Sun Self Storage provides secure and affordable storage units in Mashpee, MA, designed to help you clear out the clutter at home, at the office, or at your rental property. Whether you’re downsizing, moving, or simply need extra room, our storage solutions make it easy to keep your belongings safe and accessible. We are located on Route 130 just down the road from the Mashpee Town Hall and near Forestdale, Sandwich, Cotuit, and Marstons Mills.
We specialize in museum-quality temperature-controlled storage units in Mashpee, ideal for protecting sensitive items like furniture, electronics, business files, and seasonal decorations. By preventing extreme temperature changes and excess humidity, our climate-controlled rentals provide peace of mind year-round. Do you work at Joint Base Cape Cod? We offer military discounts as a thank you for your service.
Browse and rent your storage unit online in minutes. With a variety of sizes and features to choose from, you’ll find the right space for your needs at Flagship Sun Self Storage in Mashpee, MA.
Yes—climate-controlled storage is highly recommended in Massachusetts due to humidity, coastal moisture, and freezing winter temperatures. Flagship Sun Self Storage offers three floors of museum-quality temperature and humidity control for your belongings.
Climate control protects:
Our climate-controlled units at Sun Self Storage maintain stable temperature and humidity year-round. If you are comparing our storage facility on Route 130 in Mashpee to others, please ask if they also control humidity. If you pre-fer non temperature controlled storage units that you can drive right up to, we recommend Mashpee Sun Self Storage on Rt 28 and Falmouth Sun Self Storage on Gifford St.
Where are you located?
Flagship Sun Self Storage is located at 490 Main St (Route 130) in Mashpee between Napa Auto Parts and the Leech Animal Hospital. We are about 7 miles south on 130 from Sandwich, MA Exit 61 off Route 6. Our office is assessable outside the gated storage facility. Storage unit rentals are available online any time of day.
Can I set up autopay?
Yes, we highly recommend you set up auto pay or pay in advance to avoid late fees. We offer auto pay on credit cards, debit cards and through ACH with your bank account. This can be set up through your online account at sunselfstorage.com or by visiting or calling our office.
What happens if I lose my key or forget my access code?
If you lose your key, please contact the office for help with removing and replacing your storage unit lock. No customer use of bolt cutters or grinders allowed. If you forget your access code, please stop by during office hours with a copy of your photo identification.
Can someone else access my storage unit on my behalf?
Yes—you can allow someone else to access your storage unit, but they must be authorized on your account according to our Massachusetts self-storage policies.
At Flagship Sun Self Storage, access is typically handled in the following ways:
Add an authorized user to your account
You can designate a spouse, family member, employee, or contractor as an authorized user. This allows them to:
Provide proper identification
Authorized users may be required to show valid ID when accessing the property or speaking with the office.
Use your gate code (if allowed)
Some customers share their access code, but for security and liability reasons, it’s best to formally add the person to your account.
Written permission may be required
If someone is not already listed, the office may require written or emailed authorization before allowing access.
If you plan to have movers, family, or employees access your unit, add them in advance to avoid delays on move-in or move-out day.
Do you provide carts or dollies to help with moving?
Yes, we provide carts at each entrance to the building to make your move easier. You are welcome to bring carts out to your vehicle and in the elevators. We also have a loading dock for loading and unloading moving trucks. We highly recommend Eldrege & Bourne Moving & Storage (https://eldredgebourne.com/).