Storage cost comparison
Compare your storage quotes over the period you expect to need.
Compare the invoices you would actually pay
A cheap first week does not tell you the total cost of storage. Minimum rental periods, notice, later prices and transport charges can change the amount substantially. This comparison focuses on whole supplier billing units so you can check the expected invoices against the contract.
Use one row per supplier or genuine storage option. Record whether the price is weekly or calendar-monthly, the expected units, minimum payable units, any additional notice units and the promotional discount. Add transport, lock, cover and other known charges in the extras field, with notes explaining the exit terms.
A calendar month is not treated as four weeks. Ask the supplier how your intended start and exit dates will be billed, then enter the actual number of invoices or units you expect to owe. This is particularly important where an uncertain completion date could carry you into another payment period.
How the comparison works
Payable units are the greater of expected units plus additional notice units, or the minimum payable units. The calculator then limits discounted units to the payable duration, applies the chosen percentage discount to those units and adds extras.
For example, a 50% discount on the first two weekly units does not halve the whole stay. The normal price applies to the other payable weeks. The result also shows the ongoing per-unit price after the promotion so a low introductory total does not hide the later rate.
Only add notice units that are extra to the expected units you have already counted. If you plan to remain for six weeks and valid notice ends with week six, adding two more weeks of notice would double count those weeks. The contract determines the bill; the tool follows your interpretation of the units and cannot decide a dispute about notice.
Worked example: minimum terms change the total
These are hypothetical quotes. Storage A charges £40 weekly. You expect five weeks, need one additional notice week, and the minimum is four. Payable units are max(5 + 1, 4) = six weeks. The first two weeks have a 50% discount and extras total £60.
The charge is £40 × (6 − 2 × 0.50) + £60 = £260. Without the discount it would be £300. The result's ongoing rate remains £40 per week; it does not suggest the discount continues indefinitely.
Storage B charges £150 per calendar month. Suppose your actual dates produce two invoices, there is no extra notice period, the minimum is one and extras are £20. The entered total is £320. These figures compare the arrangements described, not an assumption that eight weeks always equals two months.
Typical storage-cost headings
For context, BlueSky Relocation's guide, checked on 29 October 2026, lists £25–£60 per container per week. That containerised-storage illustration is not a quote for a self-access unit; verify VAT, access, transport and terms.
Check unit rental, collection, delivery out, access charges, locks, required cover and deposits. A refundable deposit belongs in the wider cash plan separately from the expense total. Ask whether a promotion requires a minimum term, a particular payment method or conditions not represented by a simple discount percentage.
A storage size label alone is insufficient for price comparison. Confirm usable dimensions, loading access, opening hours and whether you can retrieve belongings yourself. Containerised storage managed by a mover can have different handling and access arrangements from a self-access unit. Use the storage space planner before choosing a price solely because the unit sounds large enough.
Plan a short and a longer stay
Run the comparison for your best current duration, then increase the units to model a realistic delay. An offer that wins over two weeks can lose over several months after an introductory discount expires. Put the next notice deadline in your timeline and read storage costs and contracts before accepting the terms.
Keep copies of the quote and the supplier's confirmation of how your dates are billed. The calculator does not monitor price changes or cancel storage automatically. Update the inputs when a new rate, extension or delivery charge is confirmed.
How to use this tool
- Confirm the billing units. Ask each supplier how many weekly or calendar-monthly units your dates require. Record the minimum term and any notice units that are genuinely additional.
- Enter promotions and extras. Add the per-unit price, discounted units, discount percentage and combined transport, lock, cover or other expenses. Note important conditions alongside each supplier.
- Test a longer duration. Calculate the current plan, then model a plausible extension. Compare the full bill and ongoing rate before choosing a unit and recording its notice deadline.
Frequently asked questions
Why does the tool ask for monthly invoice counts instead of weeks?
Calendar months have different lengths and supplier contracts handle part-months differently. Entering the actual expected invoices avoids silently treating every month as four weeks.
Should I always add the notice period to my stay?
No. Add only notice units that create extra payable time beyond the units already counted. If valid notice is served within your planned stay, adding it again would overstate the bill.
Does the calculator select an appropriately sized unit?
No. It compares the entered prices and terms. Check dimensions, safe stacking, access and suitable conditions separately, using the storage space planner as an initial aid.