Mortgageable: every lead met instantly by an AI agent.
Fifty One Degrees designed and built Roof, an AI onboarding agent for Mortgageable, a UK mortgage broker with access to over 90 lenders. Live on mortgageable.co.uk since May 2025, Roof qualifies enquiries against ten customer profiles, books appointments straight into advisor calendars, and has been extended onto WhatsApp.
Leads arrive around the clock. Advisors do not.
Mortgageable's advisors handle everything from first-time buyers to adverse credit and later-life lending, with access to over 90 lenders. But enquiries arrive at all hours, and every one needed a person to work out what the customer actually needed before any advice could happen. The firm wanted to increase profit per advisor by qualifying leads better, automating the straightforward cases and triaging the difficult ones to the right specialist, without losing the personal service a mortgage decision deserves.
Roof: an onboarding agent on the front door
A qualification agent on the website
Roof sits on mortgageable.co.uk and talks to customers in plain English about their situation: property, employment, adverse credit, later-life needs. It allocates each customer to one of ten profile definitions, from first-time buyer to self-employed, collects the details an advisor needs, and passes the qualified lead into Mortgageable's CRM automatically.
Appointment booking and specialist routing
Extended in early 2026, Roof books appointments directly into advisor calendars through the CRM's appointments API, routes complex cases to specialist advisors, and can look up indicative rates in conversation.
A WhatsApp extension
When a new lead enters the CRM, the WhatsApp extension messages them instantly, personalised with what is already known, qualifies them in conversation, books the appointment, and flags non-responsive leads back to the CRM for manual follow-up.
Guardrailed, monitored and built for volume
Bespoke Python on Google Cloud
Roof is a custom Python build on Google Gemini, deployed on Google Cloud with monitoring and encrypted storage, engineered to handle up to 1,000 customers a day.
Scoped to what an agent should say
The agent discusses product types and scenarios at a high level and explicitly does not give specific rate advice: regulated advice stays with the advisors.
Integrated with the systems the firm runs on
Leads, statuses and appointments flow through Mortgageable's existing CRM via its API, so the team works exactly where it always has.
Humans on everything that matters
Roof qualifies and books; advisors advise. Non-responsive and complex cases are flagged to a person rather than left to the machine.
Proof of concept to production, in stages
The build ran as a staged, fixed-price project: prove the concept first, then release carefully, then extend what works. IP in the delivered system transfers to Mortgageable, so the firm owns its own front door.
Work through Mortgageable's lead journey with its directors to find where an agent earns its keep.
Define exactly what Roof may discuss, the ten customer profiles it qualifies against, and the CRM integration contract.
Proof of concept in about two weeks, then beta, then full release onto the live website.
Add appointment booking, specialist routing and rate lookup once the core agent proved itself in production.
Take the same agent onto WhatsApp, engaging every new lead within moments of it entering the CRM.
What Roof delivers
Fifty One Degrees built Mortgageable an AI agent that meets every enquiry the moment it arrives: qualifying the lead, capturing the detail an advisor needs, and booking the appointment before a competitor picks up the phone.Fifty One Degrees x Mortgageable
What did Fifty One Degrees build for Mortgageable?
Roof, a custom AI onboarding agent, live on mortgageable.co.uk since May 2025. It qualifies mortgage enquiries against ten customer profiles, collects the details advisors need, books appointments into advisor calendars and passes every lead into Mortgageable's CRM. A WhatsApp extension engages new leads the moment they arrive.
Does the agent give mortgage advice?
No. Roof discusses product types and scenarios at a high level and is explicitly scoped not to give specific rate or product advice. Regulated advice stays with Mortgageable's advisors; the agent's job is to qualify, collect and book.
How was Roof built?
As a bespoke Python application on Google Gemini, deployed on Google Cloud with monitoring and encrypted storage, integrated with Mortgageable's CRM via API, and engineered to handle up to 1,000 customers a day. It shipped through a staged proof of concept, beta and full release.
Can Fifty One Degrees build an onboarding agent for my business?
Yes. Fifty One Degrees builds custom AI agents around a firm's real lead journey and systems. Book a Discovery Call and we will map where an agent would pay for itself first.
Want every lead met the moment it arrives?
Book a 30-minute Discovery Call and we'll map where an AI agent fits your customer journey, from first enquiry to booked appointment.