What We Build
Bespoke sales CRM with your exact pipeline stages and deal fields. Contact and company management with custom data models. Custom reporting and revenue dashboards. Integration with email (Gmail, Outlook), phone (Twilio), and calendar. Marketing automation triggers and lead scoring. Proposal generation and contract management. Commission calculation and quota tracking.
Why Custom CRM?
HubSpot costs £24,000–£96,000/year for growing B2B companies. Salesforce costs £60,000–£200,000/year. Both are built for generic sales processes — they force you to adapt your business to the software, not the other way around. A custom CRM is built exactly for your process, integrates with your other systems natively, and costs a one-time build fee with zero ongoing licence costs.
CRM + Marketing Integration
The unique advantage of a Brantum-built CRM: because we also build your software and run your marketing, your CRM can be the single source of truth for product usage, revenue, and marketing attribution. No more guessing which campaign drove which deal — we wire the attribution directly from your CRM into your ad platforms.
PropTech CRM Specialisation
Brantum has specific expertise building CRM systems for PropTech companies: property pipeline management, tenancy and lease tracking, landlord and tenant portals, automated communication workflows, property performance dashboards, and integration with portals (Rightmove, Zoopla, REA Group).
Pricing
Custom CRM build: £45,000–£120,000 depending on complexity. Typical build time: 10–16 weeks. Compare to: HubSpot Professional (£24,000/year), HubSpot Enterprise (£96,000/year), Salesforce Enterprise (£75,000–£180,000/year). Most clients recoup the build cost within 12–18 months of licence savings.
Relevant Case Studies
Frequently Asked Questions
Is a custom CRM worth it compared to HubSpot?
For companies spending £24,000+/year on CRM licences, a custom CRM typically pays for itself within 12–18 months. Beyond the cost saving, a custom CRM fits your exact sales process, integrates natively with your other systems, and gives you complete data ownership. You are not constrained by HubSpot's feature roadmap or pricing tier changes.
How long does it take to build a custom CRM?
A focused CRM (core pipeline, contacts, reporting, 3–4 integrations) takes 10–12 weeks. A more complex CRM with custom data models, advanced automation, and many integrations takes 14–20 weeks. We start with a 2-week Discovery Sprint to map your sales process and design the data model before building.
Can you migrate our data from HubSpot or Salesforce?
Yes. Data migration is included in CRM projects. We export your existing contacts, companies, deals, and historical activity from HubSpot or Salesforce, clean and normalise the data, and import it into your new custom CRM. We test data integrity before switching off the old system.
Does the custom CRM integrate with our marketing tools?
Yes. We integrate with: Google Ads (conversion import), Meta Ads (Conversions API), LinkedIn Ads, Mailchimp, ActiveCampaign, Intercom, Zendesk, Stripe, QuickBooks, Xero, Slack, and most tools via Zapier or custom webhook. Because we build the CRM from scratch, any integration is possible.
What about ongoing support and new features?
Most clients move to a monthly retainer after the initial CRM build for ongoing feature development, maintenance, and support. We offer SLA-backed support contracts for businesses that depend on their CRM for daily operations.
