Extra Space Storage sets the standard for clean, secure, and hassle-free self storage, and our facility at 56 6th St is no exception. Our Dover storage facility offers a large selection of unit sizes with convenient options like drive-up access and vehicle storage. Located near 6th St and Maple St, we're trusted by neighbors in Madbury, South Berwick, and other surrounding areas. Whether you're moving, downsizing, or decluttering, we're here to make finding the right storage unit quick and simple. Reserve online, give us a call, or stop by the facility today.
Explore offerings from Extra Space Storage on 56 6th St in Dover, with popular services available at this location.
7833 Services
21 items
Services
Self Storage
Extra Space Storage offers a wide range of secure self storage solutions for residential and commercial needs. Our storage units are rented on a month-to-month basis and come in a variety of sizes from 5x5 to 10x30, with additional sizing available and a variety of storage features and amenities.
Online Payments
Extra Space Storage makes it easy to pay your storage rental bill online. Simply log into your account to access statements, make a payment, and more. You can make a one-time payment, or set up recurring payments when you rent self-storage online.
Packing & Moving Supplies
Extra Space Storage sells packing and moving supplies like moving boxes, bubble wrap, packing tape, rope and tie-downs, moving kits, and more. We have all of the high-quality moving supplies you need for a successful move!
Business Storage
Extra Space Storage offers small and large storage units for business use. Commercial storage features can include extended access hours, climate control, warehouse space, and more. Business storage is a great solution for businesses with surplus supplies, equipment, or inventory.
Moving Boxes
Extra Space Storage sells moving boxes in a variety of sizes ranging from 1.6 cubic feet to 6.1 cubic feet. Including specialty moving boxes such as Wardrobe, Television, or File boxes for unique items! Moving boxes at Extra Space Storage are high-quality, sturdy, and affordable.
5x5 Storage Units
Extra Space Storage's 5x5 storage units offer 25 square feet of floor space and an average ceiling height of 8 feet, providing 200 cubic feet of storage. Comparable in size to a small closet—store seasonal items, moving boxes, compact furniture, and other belongings.
5x10 Storage Units
Extra Space Storage's 5x10 storage units offer 50 square feet of floor space and up to 8-foot ceilings, providing 400 cubic feet of storage. Comparable in size to a standard walk-in closet, you can store a queen size mattress set, multiple moving boxes, and other belongings.
5x15 Storage Units
Offering 75 square feet of floor space and an average ceiling height of 8 feet—totaling 600 cubic feet of storage—a 5x15 storage unit is comparable in size to a large walk-in closet. Great for storing king mattresses, washers, dryers, kayaks, canoes, motorcycles, and more.
10x10 Storage Units
10x10 storage units at Extra Space Storage offer 100 square feet of floor space, an average ceiling height of 8 feet, and 800 cubic feet of storage capacity. About the size of a small bedroom, ideal for storing the contents of multiple bedrooms, appliances, ATVs, office furniture, and more.
10x15 Storage Units
Extra Space Storage’s 10x15 storage units offer 150 square feet of floor space, an average ceiling height of 8 feet, and 1,200 cubic feet of total storage space. These units are comparable in size to a large bedroom, making them perfect for storing couches, dressers, appliances, jet skis, riding lawn mowers, and more.
10x20 Storage Units
10x20 storage units at Extra Space Storage provide 200 square feet of floor space, average ceiling height of 8 feet, and 1,600 cubic feet of total storage. About the size of a one-car garage, you can store small vehicles, furniture from multiple bedrooms, moving boxes, and more.
10x25 Storage Units
A 10x25 storage unit has 250 square feet of floor space, an average ceiling height of 8 feet, and 2,000 cubic feet of total storage capacity. Comparable to a large one-car garage—it can accommodate the contents of a 3-5 bedroom home—including furniture, appliances, vehicles, and multiple moving boxes.
10x30 Storage Units
Extra Space Storage's 10x30 storage unit provides 300 square feet of storage space, with an average ceiling height of 8 feet, and 2,400 cubic feet of total storage capacity. About the size of a 1.5-car garage, these units are ideal for storing items from a 4–5 bedroom home like furniture and appliances, as well as vehicles or business inventory.
Drive-Up Access Storage
Drive-up access storage units at Extra Space Storage allow you to pull your vehicle directly next to the door of your storage unit to easily load and unload items. Some locations even allow garage-like drive-up storage units to be used as indoor vehicle storage for cars, motorcycles, and more.
Car Storage
Store your car for as long as you need with Extra Space Storage car storage! We offer a variety of indoor, outdoor, and covered drive-up vehicle storage units and parking spaces perfect for storing sedans, SUVs, pickup trucks, and more. Car storage units are usually 10x15 or larger.
Motorcycle Storage
Store your motorcycle for as long as you need with Extra Space Storage motorcycle storage! We offer a variety of indoor, outdoor, and covered drive-up vehicle storage units and parking spaces. Motorcycle storage units are usually 5x10 or larger.
Outdoor Vehicle Storage
Store vehicles of any size for as long as you need in outdoor vehicle storage units at Extra Space Storage! We offer a variety of spacious parking spaces perfect for storing vehicles from small cars and motorcycles to large RVs, boats, and trailers.
Overnight Security Monitoring
Have peace of mind that the belongings in your storage unit are well-protected at Extra Space Storage. Even past normal office and gate hours, our advanced security features continue to monitor our self storage facilities and storage units overnight.
Wide-Drive Aisles
Wide-drive aisles provide plenty of space for larger vehicles and moving trucks to get in and out of an Extra Space Storage facility when accessing outdoor and drive-up storage units or loading bays.
RV Storage
Extra Space Storage offers RV parking for trailers, campers, and motorhomes. Extra Space Storage offers indoor, outdoor, or covered RV parking with units ranging from 8x20 to 8x40 and sometimes larger! Our outdoor parking spaces are up to 50 feet long and come in covered and uncovered options.
Indoor Vehicle Storage
Store small vehicles securely for as long as you need in indoor vehicle storage units at Extra Space Storage! We offer a variety of enclosed drive-up storage units perfect for storing cars and small vehicles like compact cars, SUVs, trucks, motorcycles, and some small boats.
Reviews
4.0
112 reviews
5 stars
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4 stars
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3 stars
7
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1 star
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SL
Sarah L
Aug 21, 2026
2.0
It started off as a good experience initially. Then they limited the hours I can access my unit, and the price went wayyy up. To the point where it’s completely unaffordable now and I have to close my account with them.
LE
LaToya Ebony
Aug 5, 2026
1.0
I wish I could give zero stars. Extra space storage does NOT like to respond to people when ot comes to their storage being Auction off. I was told my personal family pictures as well as ALL my papers that were inside with my pictures would be returned. I never received a phone call from them in regards to my items. I had to call them repeatedly until I got through to the RUDEST woman on the other end of the phone telling me my personal items NEVER was returned. I will be in search of a lawyer because if my personal information is used Extra space storage will pay for it.
AG
Amanda Glover
Jul 30, 2026
1.0
The workers here are not friendly and there have been several break-ins
PP
Paul
Jun 25, 2025
5.0
Excellent customer service. A reasonable price for an outdoor unit but ultimately just didn’t fit my needs at the Dover location. Staff went above and beyond to answer questions and be helpful
LK
Liz Kucera
Mar 9, 2024
1.0
Everything started fine, but after only a couple months of renting a unit I got a 30 days notice that they're doubling the rate.
Frequently Asked Questions About Extra Space Storage
What storage unit size do I need?
The best way to determine which storage option is right for you is with our helpful Storage Unit Size Guide! It will help you estimate how many boxes and non-packed items, such as furniture and appliances, you can fit into each storage unit.
What type of storage unit do I need?
Many factors determine your best storage solution. Do you want the convenience of a ground-floor unit? Do your belongings need climate control? What about vehicle storage? We have online resources to help you explore these options to find your ideal storage unit.
What are your storage unit prices?
Monthly rates can be found online and vary by facility, unit size, features, and local market. Please use our site search tools to find pricing at a facility near you.
What's the difference between office, access, and gate hours?
The office hours are the hours of operation for the property. During these hours the Store Manager will be available to assist you with your storage needs or moving and packing supplies. The gate hours are the hours of the property, and when your unit can be accessed.
Can I buy boxes or other packing products from Extra Space Storage?
Extra Space Storage offers a variety of moving and packing supplies online and at local facilities for purchase.
What areas does Extra Space Storage serve?
Extra Space Storage serves residents of Dover, Madbury, South Berwick, Durham, and more.
What is the closest intersection to Extra Space Storage?
Extra Space Storage is located at the corner of 6th St and Grove St.
Do you have drive-up storage units?
Yes! Whether you’re moving, storing a vehicle, or using commercial storage, drive-up access is one of the best storage features available at Extra Space Storage! Because you can pull a vehicle right up to your unit, it makes moving large, heavy items—like furniture or equipment—in and out of your unit much easier.
Do you offer RV storage solutions?
Yes! At Extra Space Storage we offer outdoor parking, covered parking, and indoor storage solutions for RVs of all sizes. Whether you’re leaving an RV in storage long term or simply need a place to park an RV between uses, we offer a flexible option with month-to-month leases so you can store for as long as you need.
Do you offer boat storage solutions?
Yes! At Extra Space Storage we offer outdoor parking, covered parking, and indoor storage solutions for boats of all sizes.
What are the access hours for Extra Space Storage?
Extra Space Storage is open Monday to Friday from 9:30 AM to 6:00 PM, Saturday from 9:00 AM to 5:30 PM, and is closed on Sundays.
Where is Extra Space Storage located?
Extra Space Storage is located at 56 6th St, Dover, NH 03820, United States.
What types of storage units are available?
Extra Space Storage offers a large selection including drive-up units, climate controlled units, non-climate controlled units, and vehicle storage such as RV and boat storage.
How can I reserve a storage unit at Extra Space Storage?
You can reserve a storage unit by visiting their website at https://www.extraspace.com/storage/facilities/us/new_hampshire/dover/7833/ or contacting them directly.
Does Extra Space Storage provide packing and moving supplies?
Yes, Extra Space Storage offers moving and packing supplies including boxes, which can be purchased online and at the facility.
Are there any drive-up storage units available at Extra Space Storage?
Yes, drive-up access is available, allowing you to pull a vehicle right up to your unit for easier loading and unloading.
Does Extra Space Storage offer RV and boat storage options?
Yes, they provide outdoor parking, covered parking, and indoor storage solutions for both RVs and boats of all sizes with flexible month-to-month leases.
What nearby facilities can I visit before or after my storage visit?
Nearby you can visit The Dover Parlor or Your Personal Best Esthetics for beauty services, or enjoy a meal at Valley Bar and Grill or Good Karma Cafe.
Is there a nearby transportation option to help me get to Extra Space Storage?
Yes, C&R Taxi service is located nearby, providing convenient transportation to and from Extra Space Storage.
Are there any local places to shop or explore near Extra Space Storage?
Customers can explore Dover Natural Marketplace for health foods, Geeked Out Comics for comic books, or visit the Dover Farmers' Market for fresh local produce.
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