The verdict in three sentences
A custom property development management platform ranges from GBP 50,000 to 110,000 in 2026, versus vertical solutions billed per user or per scheme. Custom becomes essential once you run several schemes in parallel with evolving price lists, reservations, option holders and a solicitor/lender connection. The main gain: avoiding double reservations, keeping plot stock reliable and shortening the reservation-to-completion cycle by several weeks.
2026 price grid: custom vs market verticals
2026 orders of magnitude for the UK market, excluding hosting and annual maintenance.
| Item | Market vertical solution | Custom Kolonell |
|---|---|---|
| Setup / subscription | GBP 280 - 750/month per scheme | GBP 50,000 - 110,000 |
| Plots and stock management | Standard | GBP 9,000 (dynamic pricing) |
| Reservations and option holders | Included module | Included in core |
| Buyer portal (managed service) | Often absent | GBP 7,500 |
| Solicitor / lender connection | Limited | GBP 6,500 - 11,000 |
| Time to deploy | 1 - 3 months | 6 - 8 months |
| Reporting customization | Low | Total |
A developer launching 2 to 6 schemes a year, with 20 to 150 plots each, quickly hits the limits of a shared spreadsheet: sync gaps between sales and management, availability errors, untracked lender calls. Custom centralises the single source of truth for stock.
Functional block breakdown
| Block | 2026 estimate | Value for the developer |
|---|---|---|
| Scheme + plots core | GBP 18,000 - 27,000 | Real-time stock, price list per plot |
| Reservations + option holders | GBP 8,000 | Zero double reservations |
| Secure buyer portal | GBP 7,500 | Documents, staged payments, progress |
| Solicitor/lender connection | GBP 9,000 | Completion and drawdown tracking |
| Management reporting | GBP 5,500 | Absorption rate per scheme |
| E-signature | GBP 3,500 | Reservations signed remotely |
The buyer portal is a commercial differentiator: buyers track works progress, staged payments and upload their documents. This reduces phone chasing and professionalises the developer's image with a demanding London clientele.
Mini case study
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Sophie runs a development company in London: 4 active schemes, 240 plots total, absorption tracked in Excel. Two double reservations in 2025 cost her commercial discounts and a dispute. She invests GBP 78,000 in a custom platform (scheme core, reservations, buyer portal, lender connection).
By making stock reliable, she eliminates double reservations and speeds the reservation-to-completion cycle by 3 weeks on average. Across 240 plots at an average margin of GBP 16,000, bringing sales forward by even 5 % of the portfolio mobilises cash earlier and saves roughly GBP 35,000 in financing costs over the year. The tool pays for itself within the next scheme.
FAQ
Isn't a market vertical solution enough? For a single-scheme developer, yes, at GBP 280-750/month. As soon as you multiply schemes with your own pricing rules and approval flows, custom avoids tool stacking and centralises stock.
How long for a full deployment? Plan 6 to 8 months, with a first version covering plots and reservations by month 4. Solicitor/lender blocks come in a second phase so as not to block sales.
Is the buyer portal really useful? Yes: it reduces chasing, secures staged payments and enhances your brand. At GBP 7,500 it becomes a selling argument with buyers.
Can we connect solicitors and lenders? Yes, via gateways or standardised exports for GBP 6,500 to 11,000 depending on counterparties. Completion and drawdown tracking becomes automatic.
What maintenance cost should I plan? Around 15 to 20 % of build per year, so GBP 12,000 to 16,000 for a GBP 78,000 project, hosting included. This covers regulatory changes and new schemes.
Let's scope your project. Tell us your number of annual schemes, plot volume and priority connections (solicitors, lenders, e-signature). 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.
