Guide · Lettings back-office

The follow-up leak: what unchased admin really costs a multi-branch letting agency

How one chasing workflow runs when it never gets dropped — and a deliberately conservative, public-data model of what the same leak costs per branch.

I run several businesses, and for the past year almost all of their admin has been run by a system I built and manage myself. Not a chatbot — a working back-office: it triages the inboxes, drafts every follow-up in my voice, chases the things humans forget, and queues every outbound message for my approval before anything sends.

This guide shows exactly how one of those workflows runs — and then shows what the equivalent leak costs a multi-branch letting agency, using public industry numbers with the working shown. Because the workflow I automated first is the one your branches do every week: chasing people who haven't replied.

The workflow, concretely

When a quote, enquiry or follow-up goes quiet in one of my businesses, this is what happens — with no one touching it:

  1. The system notices the silence. It tracks every open item in a queue, the way a lettings book tracks arrears.
  2. It drafts the chase — in my tone, referencing the actual history, not a template blast.
  3. The draft sits in an approval queue. Nothing sends without a human yes. That rule is absolute: external messages, anything with money attached, anything that commits me — all gated.
  4. Once approved, it sends, logs the outcome, and schedules the next nudge.
  5. Every week I get a written record: what was chased, what came back, what's still open.

The point isn't that software writes emails. It's that the chasing never stops happening. Humans triage; busy humans triage ruthlessly; and follow-up is always the first thing ruthless triage drops. A system doesn't get busy.

In a letting agency the same mechanics apply to the five chasing workflows every branch runs: referencing that stalls on an unreturned form, gas safety, EICR and EPC dates creeping towards expiry, landlord reports that slip a week, enquiries that go quiet, renewals nobody opened a conversation about.

What the same leak costs a letting agency

How to read these numbers: this is a model, not a case study. Every input is from a public source (listed at the bottom), the assumptions are deliberately conservative, and the arithmetic is shown so you can rerun it against your own book.

Since 1 May 2026, every assured tenancy in England is periodic and a tenant can leave on two months' notice — the fixed-term renewal, which Goodlord's industry research found generated 27% of the average agency's revenue, no longer exists as an event. Retention is now a continuous discipline: rent reviews served properly, tenants spoken to before they drift, landlords updated before they wonder.

Take one branch managing 200 tenancies. Average UK rent is £1,383 a month (ONS, May 2026). An average void runs 24 days and costs the landlord roughly £1,100 in lost rent (Goodlord / Benham & Reeves data) — during which your management fee is suspended too, call it £340 at 10%, plus the cost of re-letting, £500–£1,500 per tenancy.

Suppose weak retention chasing — late rent-review conversations, slow responses, tenants who leave because nobody talked to them — tips just five extra tenancies a year into avoidable churn. Five, out of two hundred. That's roughly £10,000–£15,000 a year, per branch — £30,000–£45,000 across a three-branch book. About the cost of the extra administrator you keep meaning to hire.

And the voids aren't the worst of it. When the NRLA asked landlords who'd switched agents why, the top answer — 38% — was slow responses. Goodlord's 2026 survey found 48% of landlords name poor communication as a top frustration. The follow-up your team drops when it's busy isn't just costing void days; it's how you lose the landlord.

What I'd never automate

Honesty matters here, because agents are rightly wary of automation. My system never sends anything unapproved. It never makes a commitment, touches money, or contacts anyone autonomously. It drafts, chases internally, tracks, and reports — the human decides. That constraint is not a limitation; it's the only version of this that a regulated, relationship-based business should touch.

The same rule carries into how My Own Agent runs the five workflows for client agencies: everything is run by me using AI agents under my direct control, on the agency's existing systems, and nothing sends without the agency's sign-off — with a weekly written record of what was chased, what came back, and what's still waiting.

Price the leak in your own book

£499 Admin-Leak Audit — a 30-minute call plus a written report within 5 working days pricing every leak we find: unchased references, lapsed certificates, missed enquiries, stalled renewals. If it's not worth it, full refund. The £499 is credited in full against your pilot — and the full service, if you go on to run it, costs less than half a £30–40k admin hire. If the numbers say it wouldn't pay for itself in your book, the report will say that too.

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Model sources

  • ONS Price Index of Private Rents, May 2026: UK average £1,383/month.
  • Goodlord / Benham & Reeves void analysis (2025): 24-day average void, ~£1,085–£1,135 lost rent per void.
  • Letting-agent fee guides (2025–26 consensus): full management 10–15% + VAT; tenant-find £500–£1,500 or 8–12% of annual rent.
  • Goodlord State of the Lettings Industry 2025: renewals = 27% of average agency revenue (pre-Renters' Rights Act).
  • NRLA landlord research (2023): 38% of switching landlords cited slow response times. Goodlord survey (April 2026): 48% cite lack of communication.
  • Renters' Rights Act 2025, in force 1 May 2026: assured tenancies periodic; two months' tenant notice.