Thirty units to sixty: what breaks at real scale

Published 16 August 2026 · Written by the Lar founder

What would it take to double a thirty-unit Scottish portfolio to sixty?

We have spent a lot of time with landlords running twenty to forty units while building Lar. Here is what they tell us breaks at that scale.

Compliance stops scaling linearly

At 30 units, you are already tracking roughly 180 to 270 certificates and registrations. Gas safety every year. EICR every five years. Landlord registration every three. Deposit protection. HMO licences where they apply.

Going to 60 does not just double that workload. It more than doubles it, because the renewal cycles collide more often. More months where three or four certificates expire at once. More chances for one to fall through.

The cost of a miss stays the same. The odds of one climb.

The remortgage calendar becomes a job in its own right

A 30-unit portfolio typically has mortgages spread across four or five lenders, with expiry dates running two years ahead. At 60, you are managing roughly twice as many products. Each one has its own expiry date, its own interest cover position, its own reversion risk.

The three mortgage numbers guide covers the maths. At this scale, keeping those numbers current across the whole book is the work.

The entity question changes shape

At 30 units, most Scottish portfolio landlords are running three or four entities. At 60, it is often six or eight, pushed there by lender caps on properties per company and by tax planning.

Each one has its own Companies House filings, its own bank accounts, its own P&L. Pulling one clear picture out of that many sets of numbers stops being something a spreadsheet can do.

Delegation stops being optional

At 30 units, a hands-on landlord can still deal with every tenant personally. At 60, that is no longer possible. You need staff, a letting agent, or both.

The question stops being whether to delegate. It becomes what to hand over, and to whom.

The accountant relationship changes shape

At 30 units across four entities, your accountant is already rebuilding records at year end. At 60 across eight, quarterly MTD reporting means that rebuild happens four times a year.

Either your accountant gets clean records from your systems, or you pay them to reconstruct your year every quarter.

The bottleneck is bandwidth, not knowledge

Here is the pattern we hear most. At this scale, the landlord already knows what the portfolio needs. Which property to sell. Which mortgage to refinance. Which company to restructure.

What they do not have is time. The daily running of the portfolio swallows the hours those decisions need, and doubling the portfolio doubles the squeeze.

That gap, between knowing what the portfolio needs and having the time to act on it, is the specific problem Lar is built to solve. Lar looks across your portfolio, works out what needs your attention, explains why it matters and helps you deal with it.