The verdict in three sentences
A London van rental company with 120 vans that runs contracts, check-in inspections, damage excess and servicing across 3 separate tools loses money on every return: unproven damage, uncharged excess, unplanned downtime. Off-the-shelf rental software costs around 250 to 750 GBP a month, while a custom tool from a London agency sits between 25,000 and 50,000 GBP (2026 market estimate). With a tablet photo inspection and online booking linked to the live fleet plan, the project ships in 12 weeks and pays back mainly through fewer damage disputes.
Rental software or custom build: a 5-year comparison
Specialist platforms handle contracts and invoicing well. They are weaker when your business mixes short hire, long-term hire to tradespeople and subletting to removal platforms, or when you need an inspection record that actually holds up.
| Criterion | Off-the-shelf rental software | Custom tool |
|---|---|---|
| Cost | 250 to 750 GBP a month (2026 market estimate) | 25,000 to 50,000 GBP with a London agency (market estimate) |
| 5-year cost | 15,000 to 45,000 GBP | Project + maintenance 500 to 1,900 GBP a year |
| Check-in and check-out inspection | Generic form, photos optional | Guided flow by vehicle panel, mandatory timestamped photos |
| Damage excess and recharging | Manual entry | Automatic calculation from the excess scale and photo comparison |
| Servicing and MOT | Basic reminders | Mileage-based alerts, planned downtime |
| Online booking | Often a paid add-on | Linked to the real fleet schedule |
| Timeline | 2 to 6 weeks | 12 weeks |
The Kolonell grid for a medium-complexity application of this kind runs from 4,000,000 to 7,000,000 FCFA, that is 6,100 to 10,670 EUR, with a team in Dakar working in English and overlapping UK business hours.
Damage disputes: the number that justifies the project
The most expensive line for a van rental firm is rarely the software: it is damage found on return that cannot be attributed. With 120 vans hired an average of 20 days a month, expect about 700 returns a month.
| Monthly indicator | Before (paper and 3 tools) | After (tablet inspection) |
|---|---|---|
| Van returns | 700 | 700 |
| Damage found | 45 | 45 |
| Damage disputed by the customer | 18 | 5 |
| Unrecovered excess | 12 | 3 |
| Average excess | 700 GBP | 700 GBP |
| Estimated monthly loss | 8,400 GBP | 2,100 GBP |
| Check-in and check-out time | 15 minutes | 7 minutes |
These are 2026 orders of magnitude for a fleet of this size. Comparing departure and return photos, panel by panel, changes the conversation at the counter: the customer sees the timestamped, geotagged image and disputes drop sharply.
The scope that fits in 12 weeks
Weeks 1 and 2: scoping workshop, excess scale, contract templates, inventory of the 120 vans and their classes (SWB, LWB, Luton, tipper). Weeks 3 to 8: offline tablet inspection app, customer signature, PDF contract emailed, fleet planner and servicing module with mileage and MOT alerts. Weeks 9 to 11: online booking with card deposit, export to the accounting software, ULEZ compliance flag per vehicle. Week 12: data migration, training for the 6 counter staff, go-live.
Hosting is in the UK or EU, compliant with UK GDPR. Copies of driving licences and ID are encrypted and purged according to a retention period agreed with you.
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Illustrative example: Mark, managing director of a 120-van rental company in London. He estimates losing 12 excess charges a month at 700 GBP, that is 8,400 GBP. If tablet inspections cut that to 3 lost charges, he recovers 6,300 GBP a month, about 75,600 GBP a year as an order of magnitude. Add 8 minutes saved on 1,400 counter transactions, or 186 hours a month. A custom tool at around 9,000 EUR on the Kolonell grid pays back in under 2 months on excess alone, even if the real gain is only half the estimate.
FAQ
Do inspection photos hold up in a dispute?
Timestamped, geotagged photos signed off by the customer are strong evidence, provided your rental terms refer to them. The contract must state the excess scale, for example 500 to 1,500 GBP depending on the van class.
Can we connect telematics boxes?
Yes, most telematics providers expose an API for mileage and location. The connector usually adds 1,300 to 2,600 GBP and enables automatic service alerts with no manual readings.
Does the tablet work with no signal in the yard?
The app stores the inspection offline and syncs as soon as signal returns. A rugged tablet costs around 250 to 500 GBP per device.
What about our contract history?
The last 3 years of contracts are imported from CSV or Excel during week 12. Allow 2 to 3 days of data cleaning depending on file quality.
What does it cost to run after delivery?
Hosting runs about 35 to 100 GBP a month. Kolonell maintenance ranges from 35,000 to 120,000 FCFA a month (50 to 180 EUR) depending on the support level.
Let's scope your project. List your van classes, your excess scale and your current tools: we quote your fleet software in the 4,000,000 to 7,000,000 FCFA band (6,100 to 10,670 EUR), delivered in 12 weeks. 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.
