The verdict in three sentences
For a 120-unit shopping centre in London, a commercial property management package costs 25,000 to 70,000 GBP to implement plus 15 to 20 % a year in licences and support, while a custom build requires 60,000 to 150,000 GBP. Over 5 years the package is often cheaper, but custom software makes sense once turnover rents, a tenant portal and service charge apportionment move beyond the standard. Either way, closing the 2 to 4 month delay in service charge reconciliation and catching missed rent reviews is worth tens of thousands of pounds a year.
What spreadsheets cost a shopping centre manager
The typical setup: 120 leases tracked in a workbook with one column per clause, turnover rents calculated from sales figures emailed by tenants, and service charge apportionment rebuilt every year from floor-area weightings. Errors do not show at first, they accumulate.
| Loss item (2026 estimate) | Assumption for 120 units | Estimated annual impact |
|---|---|---|
| Rent reviews missed or applied late | 0.5 % of 18 M GBP of rent | 90,000 GBP |
| Service charge under-recovered (wrong schedules, voids) | 3 to 8 % of 2.5 M GBP of service charge | 75,000 to 200,000 GBP |
| Turnover rent under-reported or unchecked | 1 to 3 % of 1.8 M GBP turnover top-up | 18,000 to 54,000 GBP |
| Year-end reconciliation issued 2 to 4 months late | 0.4 to 0.8 M GBP tied up | cash cost and tenant disputes |
| Lease expiries and break options poorly tracked | 10 to 20 leases a year | weaker negotiation, longer voids |
| Re-keying and landlord reporting | 1 FTE | 40,000 to 50,000 GBP |
On compliance, the RICS professional statement on service charges in commercial property expects a budget before the start of the year and a reconciliation within four months of year end, and the Code for Leasing Business Premises sets transparency standards on lease terms. A system that tracks both protects the landlord in disputes.
Package or custom build: 2026 prices in the UK
Shopping centre software must cover leases and clauses, fixed and turnover rent billing, VAT under Making Tax Digital, service charge budgets and reconciliations, arrears, and reporting to owners or lenders.
| Criterion | Property management package | Custom build |
|---|---|---|
| Upfront cost | 25,000 to 70,000 GBP (licences, setup, data migration) | 60,000 to 150,000 GBP |
| Recurring cost | 15 to 20 % a year (vendor licences and support) | 12 to 18 % a year (hosting, enhancements) |
| Turnover rents | often supported, sales submitted by file | tenant portal, automatic variance checks |
| Service charge apportionment | standard schedules | multiple schedules, meters, zones, voids |
| Accounting integration | vendor connectors | on your ERP and chart of accounts |
| Time to go live | 3 to 5 months | 5 to 8 months |
| Enhancements | vendor roadmap | at your own pace |
5-year cost, option by option
| 5-year scenario | Upfront | Recurring over 5 years | Estimated total |
|---|---|---|---|
| Structured spreadsheets with controls | 8,000 GBP | 0 GBP | 8,000 GBP (losses remain) |
| Entry-level package | 25,000 GBP | 22,500 GBP (18 %) | 47,500 GBP |
| Premium package | 70,000 GBP | 63,000 GBP (18 %) | 133,000 GBP |
| Custom core | 60,000 GBP | 45,000 GBP (15 %) | 105,000 GBP |
| Full custom with tenant portal | 150,000 GBP | 112,500 GBP (15 %) | 262,500 GBP |
An honest reading: for a single centre with conventional leases, a package between 25,000 and 70,000 GBP covers the essentials. Custom software becomes relevant for a manager running several centres, wanting a portal where tenants submit sales and view invoices, or recharging costs from individual sub-meters.
Mini case study
Emma, operations director of a 120-unit shopping centre in London (illustrative scenario), chooses a package at 50,000 GBP with a turnover rent module, plus 9,000 GBP a year in licences and support.
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- Rent reviews applied on time: 90,000 GBP per year.
- Service charge recovered correctly (gap cut from 6 % to 1.5 %): 2.5 M GBP × 4.5 % = 112,500 GBP per year.
- Turnover rent checks: 2 % of 1.8 M GBP = 36,000 GBP per year.
- 0.8 FTE of accounting time redeployed: 36,000 GBP per year.
Estimated gain: 274,500 GBP per year, against 59,000 GBP in year one. The project pays back in about three months, and the year-end reconciliation can go out within a month of closing.
FAQ
How much does shopping centre lease management software cost in the UK in 2026?
A package costs 25,000 to 70,000 GBP to implement, plus 15 to 20 % a year in licences and support. A custom build sits between 60,000 and 150,000 GBP depending on scope, especially the tenant portal.
How should turnover rents be handled?
The system should collect monthly sales from tenants, compute the top-up above base rent and flag month-on-month variances above 10 %. An annual audit of declared sales is still advisable for the 10 to 20 largest units.
Can we shorten the service charge reconciliation delay?
Yes: with a budget tracked per schedule throughout the year, the reconciliation can go out within 30 days of year end instead of 2 to 4 months. Tenants also dispute less when line-by-line detail is available online.
Should the software integrate with our accounting ERP?
It is strongly recommended to avoid double entry of around 1,500 invoices a year. The interface often accounts for 10 to 15 % of the budget, whether you choose a package or a custom build.
How long does it take to migrate 120 leases?
Allow 4 to 8 weeks to abstract and verify key clauses: term, rent reviews, base rent, turnover percentage, service charge schedules, breaks. It is the ideal moment to spot missed reviews.
Let's scope your project. Send us your number of units, lease types and current tools to get a costed package versus custom comparison and a lease migration plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
