
Storage Unit Sizes Guide
Choosing the right storage unit size can feel confusing, especially if you’re storing furniture, business stock, household contents or equipment for the first time.
What Size Storage Unit Do I Need?
At Key2Space Self Storage in Birmingham, we offer a wide range of unit sizes from compact 25 sq ft rooms through to large 200 sq ft storage units. Whether you’re decluttering a spare room, moving house, renovating your property or looking for business storage, we’ll help you find the perfect space.
Our flexible storage solutions are available for both personal and business customers across Birmingham, Erdington, Sutton Coldfield and the surrounding areas.


Storage Unit Size Guide
- 25 sq ft (5.9ft x 4.3ft) – Boxes, sports equipment, bikes, seasonal items, student storage
- 50 sq ft (8.2ft x 5.74ft) – Contents of a bedsit or small flat
- 75 sq ft (11.5ft x 6.6ft) – One-bedroom flat contents
- 100 sq ft (11.5ft x 6.6ft) – Two-bedroom flat or house contents
- 125 sq ft (14.8ft x 8.2ft) – Large two-bedroom or small three-bedroom home
- 150 sq ft (13.9ft x 10.7ft) – Three-bedroom house contents
- 175 sq ft (13.1ft x 13.1ft) – Large family home or growing business storage
- 200 sq ft (14.8ft x 13.1ft) – Four-bedroom house or extensive business stock
25 sq ft Storage Unit
Ideal for Personal Storage
A 25 sq ft unit is similar in size to a garden shed and is perfect if you only need a small amount of extra space.
Suitable for:
- 15-20 boxes
- Bicycles
- Golf clubs
- Camping equipment
- Seasonal decorations
- Student belongings
- Small furniture items
This is one of our most popular options for students and customers looking to declutter their homes.
50 sq ft Storage Unit
Perfect for Small House Moves
A 50 sq ft unit can comfortably hold the contents of a studio apartment or bedsit.
Suitable for:
- Double mattress
- Washing machine
- Fridge freezer
- Small sofa
- Boxes and personal belongings
- Office equipment
Ideal during house moves, renovations or temporary relocations.
75 sq ft Storage Unit
Great for One-Bedroom Flats
A 75 sq ft storage room offers enough space for the contents of a typical one-bedroom property.
Suitable for:
- Sofa
- Bed and mattress
- Wardrobes
- Dining table and chairs
- White goods
- 30+ boxes
Also popular with small businesses needing stock storage.
100 sq ft Storage Unit
Suitable for Two-Bedroom Homes
A 100 sq ft unit is one of the most versatile storage sizes available.
Suitable for:
- Furniture from a two-bedroom house
- Appliances
- Multiple wardrobes
- Business stock
- Archive boxes
- Trade equipment
Perfect if you’re moving house or need medium-term storage during renovations.
125 sq ft Storage Unit
Large Household Storage
A 125 sq ft unit provides substantial storage capacity and can comfortably accommodate larger furniture items.
Suitable for:
- Two to three-bedroom home contents
- Sofas and armchairs
- Beds and wardrobes
- Dining furniture
- Large quantities of boxes
- Business inventory
A popular choice for customers between property moves.
150 sq ft Storage Unit
Ideal for Family Homes
Need to store the contents of a three-bedroom property? A 150 sq ft unit offers plenty of room.
Suitable for:
- Full house contents
- Garden furniture
- Appliances
- Large furniture collections
- Business stock and equipment
Perfect for long-term storage or major renovation projects.
175 sq ft Storage Unit
Business and Large Home Storage
This larger storage room is ideal for customers needing significant storage space.
Suitable for:
- Four-bedroom household contents
- Retail stock
- Commercial equipment
- Trade tools
- Event equipment
- Archive storage
Many local businesses use this size as a cost-effective alternative to renting additional commercial premises.
200 sq ft Storage Unit
Maximum Storage Space
Our largest standard storage unit offers extensive capacity for both domestic and commercial customers.
Suitable for:
- Large family home contents
- Bulk stock storage
- Ecommerce businesses
- Contractors’ equipment
- Office relocations
- Furniture storage
This unit size provides exceptional flexibility for customers with larger storage requirements.
Not Sure Which Size You Need?
Our experienced team can help you choose the right storage unit based on what you’re storing.
Simply contact Key2Space and we’ll recommend the most suitable unit size, ensuring you only pay for the space you actually need.
Why Choose Key2Space?
- Secure CCTV monitored facility
- Flexible rental periods
- Personal and business storage
- Convenient Birmingham location
- Easy access
- Friendly local team
- 50% off your first two months
Get in touch today for a free, no-obligation storage quote.

Storage Unit Sizes FAQs
What size storage unit do I need?
The size you need depends on what you’re storing. A 25 sq ft unit is ideal for boxes and smaller household items, while a 100 sq ft unit can accommodate the contents of many family homes. If you’re unsure contact our team for personalised advice.
What can I fit into a 25 sq ft storage unit?
A 25 sq ft storage unit is ideal for approximately 15-20 boxes, bicycles, sports equipment, student belongings and seasonal items. If you’re looking for short-term storage during a move or while decluttering, our Personal Storage solutions could be the perfect fit.
Is a 50 sq ft storage unit big enough for a flat?
A 50 sq ft unit is suitable for many studio apartments and one-bedroom flats, including furniture, appliances and personal belongings. Customers moving within Birmingham often choose this size for temporary storage.
What can I fit into a 75 sq ft storage unit?
A 75 sq ft unit can usually hold the contents of a one to two-bedroom property, including beds, wardrobes, sofas and multiple boxes. This size is particularly popular with customers using our Self Storage Birmingham facility during house moves.
How much furniture can fit into a 100 sq ft storage unit?
A 100 sq ft unit is similar in size to a standard garage and can often hold the contents of a two to three-bedroom home. This makes it one of our most popular storage options for families and homeowners.
Is a 200 sq ft storage unit suitable for business storage?
Absolutely. Many local companies use our larger units to store stock, tools, equipment and archive documents. Learn more about our dedicated Business Storage solutions for Birmingham businesses.
Can I change storage unit sizes if my needs change?
If you find you need more or less space, we can usually move you to a different unit size, subject to availability. Our team will be happy to discuss the best option for your needs.
How do I know if I’m choosing the right size unit?
Simply tell us what you plan to store and we’ll recommend the most suitable storage unit. You can also review our detailed Storage Unit Sizes Guide above to compare capacities and dimensions.
What is the most popular storage unit size?
Our 100 sq ft units are among the most popular because they offer enough space for the contents of a typical family home while remaining affordable and flexible.
Can I store business stock in any size unit?
Businesses use everything from 25 sq ft units for archive boxes through to 200 sq ft units for ecommerce stock and commercial equipment. Visit our Business Storage page to learn more.
Do you offer short-term / long-term storage?
We offer flexible storage contracts whether you need storage for a few weeks or several months. Short-term storage is popular for house moves, renovations and temporary business requirements. .
Many customers use Key2Space for long-term storage of furniture, personal belongings, business stock and equipment. Our secure facility is ideal for ongoing storage requirements.
Are your storage units secure?
Our Birmingham facility benefits from secure access controls and 24-hour CCTV monitoring. You can learn more about our facility on our Self Storage Birmingham page.
Can I access my storage unit whenever I need to?
We provide convenient customer access during our opening hours, allowing you to access your belongings when required. Contact us for current access arrangements.
Do businesses use Key2Space self storage?
We work with businesses throughout Birmingham, Erdington and Sutton Coldfield who use our units for stock storage, tools, archive files and commercial equipment. Visit our Business Storage page for more information.
Which storage unit size is best for a three-bedroom / four-bedroom house?
For most three-bedroom homes, we recommend a storage unit between 125 sq ft and 150 sq ft depending on the volume of furniture and possessions being stored.
Most four-bedroom properties require a 175 sq ft or 200 sq ft storage unit. Our team can advise on the most suitable option based on your inventory.
Can I store furniture safely?
Our units are ideal for storing sofas, beds, wardrobes, dining furniture and household goods. Many customers use our Personal Storage services during house moves and renovations.
Where is Key2Space located?
Key2Space is based at Key Business Park, Kingsbury Road, Birmingham B24 9PT. We are conveniently located for customers looking for Self Storage Erdington, Self Storage Sutton Coldfield and Self Storage Birmingham.
Do you offer discounts for new customers?
We regularly offer promotions, including 50% off your first two months’ storage. Visit our Contact Us page or get in touch for our latest offers.
Get in touch
Get Your Storage Quote
Tell us what you need to store and we’ll help you find the right storage unit at the right price.
Limited Time Offer: New customers get 50% off their first 2 months’ storage.
Complete the form below and we’ll be in touch with a no-obligation quote.
Book today and SAVE 50% for your first two months
Modern, Clean, Dry Storage Units in a range of sizes
Flexible terms, short or long-term storage available
Insured, Safe & Secure – 24/7 CCTV
