The verdict in three sentences
With 120 leases, turnover rent based on tenant sales and service charges recovered under contractual keys, every missed escalation or reconciliation hits revenue directly. A packaged lease management solution at 30,000 - 120,000 SGD a year covers billing but often struggles with monthly sales collection and unusual clauses. A custom system at 200,000 - 500,000 SGD, connected to your accounting, pays back in 2 to 3 years on an asset this size.
What mall management software must handle
Running a mall is more than invoicing. The centre manager oversees leases with mixed clauses, two-part rents (base rent plus turnover percentage) and a service charge budget to split by contractual keys.
| Function | Scattered tools (Excel + accounting) | Packaged solution | Custom software |
|---|---|---|---|
| Lease and clause database | PDFs and spreadsheets | Yes, standard fields | Yes, specific clauses modelled |
| Annual rent step-ups | Manual, often missed | Automatic | Automatic, with caps and tiers |
| Monthly tenant sales collection | Emails and reminders | Optional module | Tenant portal, entry or POS import |
| Turnover rent | Quarterly manual calculation | Partial | Automatic, annual true-up |
| Service charge recovery | Spreadsheet per key | Yes | Yes, with annual statement |
| Renewal and expiry alerts | Personal calendar | Yes | Yes, with renewal strategy |
| 2026 cost (estimate) | Staff time | 30,000 - 120,000 SGD / year | 200,000 - 500,000 SGD + 25,000 - 60,000 SGD / year |
In Singapore, retail leases typically run 3 years with fixed step-ups and gross turnover rent. Since 2022, the Code of Conduct for Leasing of Retail Premises frames turnover rent terms, so clauses must be modelled precisely. On 120 leases averaging 180,000 SGD a year, missing a 3% step-up for one quarter costs about 160,000 SGD.
Packaged or custom: 5-year comparison
| Item (5 years) | Entry-level package | Full package | Custom software |
|---|---|---|---|
| Licence or subscription | 30,000 SGD / year, 150,000 SGD | 120,000 SGD / year, 600,000 SGD | 0 SGD |
| Implementation and lease migration | 15,000 - 30,000 SGD | 50,000 - 100,000 SGD | Included in build |
| Initial build | 0 SGD | 0 SGD | 200,000 - 500,000 SGD |
| Maintenance and hosting | Included | Included | 25,000 - 60,000 SGD / year, 125,000 - 300,000 SGD |
| Tenant portal (sales entry) | Rarely | Paid option | Included |
| Fit with unusual clauses | Low | Medium | Full |
| Indicative 5-year total | 165,000 - 180,000 SGD | 650,000 - 700,000 SGD | 325,000 - 800,000 SGD |
For a single 120-unit mall, custom sits between the two packages, with a tenant portal that packages often charge extra for.
Turnover rent and sales collection: the sensitive part
A turnover clause sets rent at the higher of base rent and a percentage of the tenant's gross sales (often 1 to 10% depending on the trade). Without reliable collection, the variable part is under-billed. Good software:
- opens a tenant portal where the tenant declares monthly sales before the 10th, with an automatic reminder on day 3;
- imports POS data when the tenant agrees;
- compares declared sales to footfall and average basket to flag anomalies;
- computes the annual true-up from the tenant's audited sales statement.
The same data feeds leasing dashboards: occupancy cost ratio per tenant, sales per square foot, vacancy by zone.
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Wei Ling, general manager of a mall in Singapore (120 tenants, 21.6 million SGD of annual rent), estimates that 1.5% of rental income leaks through late step-ups, unclaimed turnover rent and misallocated charges: 324,000 SGD a year. Her team also spends 50 hours a month chasing tenants and consolidating sales.
Chosen scenario: custom software at 320,000 SGD, with 40,000 SGD a year of maintenance. Recovering two thirds of the leakage (216,000 SGD) and 35 hours a month of admin (about 30,000 SGD a year), the net annual gain is around 206,000 SGD. Payback: about 19 months.
FAQ
How much does mall lease management software cost in Singapore in 2026?
A custom system costs 200,000 to 500,000 SGD depending on modules (leases, step-ups, turnover rent, charges, tenant portal). Maintenance runs at 25,000 to 60,000 SGD a year.
Can it compute turnover rent automatically?
Yes. It applies each lease's base rent, percentage and breakpoints to monthly sales, then runs the annual true-up against audited figures.
Is there public funding for this kind of project?
Some digital projects qualify for Enterprise Singapore support schemes, depending on company size and scope. Check eligibility before signing, as it can cover a meaningful share of qualifying costs.
How long to migrate 120 leases?
Allow 3 to 4 months of project, including 4 to 6 weeks of clause entry and checks. A legal review of unusual leases is advisable during that phase.
Can the software handle several malls?
Yes, if the architecture plans it from the start: each mall keeps its own accounts and charge keys, with a consolidated dashboard for the owner or REIT manager.
Let's scope your project. We define the scope with you (leases, step-ups, turnover rent, charges, tenant portal), an indicative budget and a timeline aligned with your next reconciliation. 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.
