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Moving home

How to Estimate the Right Self Storage Unit Size for your Home Move

Time to read: 4 minutes

Contents
  1. Why Choosing the Right Storage Unit Size Matters
  2. Small Storage Units (9-25 sq ft)
  3. Medium Storage Units (35-75 sq ft)
  4. Large Storage Units (100-150 sq ft)
  5. How Much Storage Do I Need? Use a Storage Unit Size Calculator
  6. Common Mistakes When Estimating Storage Unit Size
  7. Most common questions asked FAQs: Storage Unit Sizes for Home Moves
  8. What size storage unit do I need for a 2-bedroom house?
  9. Is it better to go slightly bigger with a storage unit?
  10. Can I change storage unit size later?
  11. Find the Right Storage Unit Near You

One of the most common questions customers ask when moving home is:

“What size storage unit do I need?”

If you’re staring at boxes, furniture, and cupboards wondering how it will all fit, you’re not alone. Estimating the right self-storage unit size is one of the biggest pain points during a house move and getting it wrong can cost you time, money, and stress.

Whether you’re downsizing, waiting for a completion date, renovating, or simply decluttering before a move, this guide will help you work out how much storage you need and choose the right unit with confidence.

Why Choosing the Right Storage Unit Size Matters

Picking the correct self-storage unit size isn’t just about space, it directly affects cost, access, and how well your belongings are protected.

  • Too small: Hard to access items, increased risk of damage, constant reshuffling
  • Too large: Paying more than necessary each month
  • Just right: Easy access, organised storage, better value for money

Understanding storage unit sizes before you move allows you to plan efficiently and removes unnecessary stress during an already busy time.

a table entitled "unit size guide", showing the general rules of thumb for the kind of unit size you'd expect to need for a given household

Small Storage Units (9-25 sq ft)

Ideal for:

  • Studio flats
  • Students
  • Seasonal or overflow items

Typically fits:

  • Boxes & suitcases
  • Bicycles
  • Small furniture
  • Sports Equipment

Tip: Perfect if you’re decluttering but still need quick access to essentials.

Medium Storage Units (35-75 sq ft)

Ideal for:

  • 1–2-bedroom homes
  • Short-term moves
  • Home renovations

Typically fits:

  • Entire household contents
  • Large furniture and appliances
  • Garage and garden items

Tip: Ideal if you’re moving in stages or storing items while waiting for a completion date.

Large Storage Units (100-150 sq ft)

Ideal for:

  • 3-4 bedroom homes
  • House moves
  • Long term storage

Typically fits:

  • Entire household contents
  • Large furniture
  • Appliances
  • Garage items

Expert Insight: “In our experience helping thousands of customers move home across the UK, most people underestimate how much space bulky furniture actually takes once packed safely. Sofas, mattresses, and wardrobes are the items most often forgotten when choosing a unit size. As a general rule, if you’re unsure between two sizes, choosing the next size up usually saves time, stress, and repacking.”

How Much Storage Do I Need? Use a Storage Unit Size Calculator

If you’re still unsure what size storage unit you need, using a storage unit size calculator is the quickest way to get clarity.

Our online storage size estimator gives you a visual guide to how everyday household items fit into different unit sizes, helping you make a confident decision without guesswork.

Try our storage unit size estimator to see what fits best for your move.

Please note: Size calculators are a guide. The exact unit you need may vary depending on the shape, weight, and dimensions of your items and how efficiently they’re packed.

Expert Insight: “Our sales advisors regularly use the same estimator when helping customers choose a unit over the phone. It’s particularly accurate for standard household moves and gives a reliable starting point before viewing a unit in person.”

Ready Steady Store
Storage Unit Size Guide
Quick Reference
9–15
sq ft
Small Storage Unit

Secure storage for documents, boxes and smaller items you need to access occasionally.

Archive boxes Suitcases Seasonal items
25
sq ft
Studio / Small 1-bed

Conveniently fits the contents of a studio or small 1-bedroom flat, without bulky furniture.

Single bed Wardrobe items Desk & chair
⭐ Most popular
50
sq ft
1–2 Bedroom Flat

Reliably fits a sofa, double bed, wardrobe and around 20 boxes - our most-booked size.

Double bed Sofa Wardrobe ~20 boxes
75
sq ft
2–3 Bedroom House

Accessible storage for most contents of a family home, including larger furniture pieces.

King bed Dining set Multiple wardrobes
100
sq ft
3–4 Bedroom House

Friendly, flexible storage for larger homes - white goods, garden furniture and full room sets.

White goods Garden furniture Full house contents

Helpful tip: Most of our storage units are at least 8ft high - stack your items and furniture to make the most of the height and keep your costs down.

Common Mistakes When Estimating Storage Unit Size

Many people underestimate how much storage they need when moving home. The most common mistakes include:

  • Forgetting bulky items like sofas, wardrobes, and mattresses
  • Not accounting for vertical stacking space
  • Overfilling a unit, making access difficult
  • Choosing the cheapest unit without considering practicality

Poor packing can make even a correctly sized unit feel too small. Using strong boxes, dismantling furniture, and stacking vertically can help maximise space and may even allow you to choose a smaller unit. See here how to pack efficiently.

Most common questions asked FAQs: Storage Unit Sizes for Home Moves

What size storage unit do I need for a 2-bedroom house?

Our customers in a 2-bedroom home typically need a 50–75 sq ft storage unit, depending on furniture volume and packing method.

Is it better to go slightly bigger with a storage unit?

Yes, our customers prefer a little extra space as it makes access easier and reduces the risk of damaging their belongings.

Can I change storage unit size later?

Yes, we offer our customers the option to upsize or downsize if their needs change.

Find the Right Storage Unit Near You

With self-storage locations across the UK including Manchester, Leeds, Coventry, Doncaster, Great Yarmouth and Bournemouth, Ready Steady Store makes it easy to find the right storage solution near you.

Whether you’re moving home, renovating, decluttering, or simply need extra space, our flexible unit sizes, online size estimator, and expert support help you store with confidence.

Get an instant online quote, or speak to our friendly Customer Service Team on 0800 321 3211 for personalised advice.

Karishma Darji

Head of Central Operations & Marketing, Ready Steady Store

Karishma is Head of Central Operations & Marketing at Ready Steady Store, bringing over 10 years’ experience in the UK self storage industry. She oversees central operations, process strategy, customer experience, and digital performance across multiple self storage locations nationwide, ensuring customers have access to affordable, secure, and easy-to-use storage solutions.

Her work is closely informed by real customer behaviour and day-to-day store operations, helping ensure all advice and guides are practical, transparent, and relevant.

Making it as easy as possible

Exclusive Enterprise Van Hire for our customers

cartoon van image

We've teamed up with Enterprise to bring our Ready Steady Store customers an exclusive deal. Book via our link and enjoy a 5% discount on live prices for van hire, making your move easier and more affordable.

  • Exclusive customer savings - 5% off live Enterprise hire prices
  • Flexible 24-hour hire periods to suit your schedule
  • Convenient pick-up and drop-off from your nearest Enterprise branch
Find out more

Secure storage for your belongings, around the clock

At Ready Steady Store, security is built into everything we do. Our stores are designed to help protect your belongings while giving you complete peace of mind, whether you're storing for the short or long term.

These measures are in place to help deter unauthorised access and provide safer storage for our customers.

Our security features typically include:

  • 24/7 CCTV monitoring
  • Smart locks for controlled, secure unit access
  • App-controlled entry, so only authorised users can enter

Expert insight from our store teams

Customers often underestimate how important access control and good lighting are when choosing self storage. Our teams regularly highlight these features as key reasons customers choose Ready Steady Store.
Security camera icon
  • 24/7 CCTV
  • Smart locks
  • App-controlled entry

Here's what our storage customers are saying

Our sustainability commitment

With climate change now at the forefront of most people’s minds, action needs to be taken. At Ready Steady Store we’re already taking steps to reduce our carbon footprint, a major factor in combating climate change.

Our latest tree planting initiative will see us reduce our footprint even further. That’s because trees absorb CO2, so they’re a great way to minimise the harmful effect of CO2 emissions on the environment. And with more trees planted, the closer we’ll be to achieving a carbon-neutral Britain, along with our goal to become a carbon-neutral business.

We’re doing everything we can to help create a sustainable future for the planet, and now you can help too. All you have to do is leave us a Google Review, and for every one posted we’ll plant a tree with our partner more:trees.

logo for sustainability partner: more:trees

Help Us Raise Money for the Alzheimer’s Society

This year, we’re proud to support the Alzheimer’s Society—our chosen charity partner—by committing to raise £5000 to help fund vital research and support services for those affected by dementia.

We’ve made fantastic progress with cake sales, sponsored walks, and other team-led activities. You can follow our journey and check in on our progress via our JustGiving page.

Want to help?

You can make a difference by donating just 50p Or feel free to give more, share the link, and encourage friends and family to get involved.

Together, we can make a real impact for people living with dementia.

Get your essentials from the Box Shop

Moving house? Making space? We’ve got you covered for all the essentials you’ll need in our box shop.

Page last updated: February 26th, 2026

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