, Property
The boiler fails in the flat in Kirkstall on a Friday afternoon. You are in a meeting. The tenant has messaged twice, the plumber you like is on another job, and the tenant in the Headingley house has just reported a leak under the sink. You own eleven properties, you have a full-time job, and you have just discovered that this is no longer an investment. It is a second occupation with worse hours.
The transition is not gradual. It happens somewhere between six and fifteen properties, and it happens on a specific day.
Self-management scales until the compliance calendar does not
With three properties you can hold the dates in your head. With fifteen you cannot, and the dates are legally enforced.
Every let property carries a recurring schedule:
- A gas safety check every twelve months by a Gas Safe registered engineer, with a record given to the tenant, under the Gas Safety (Installation and Use) Regulations 1998.
- An electrical installation condition report at least every five years, with a copy to tenants and to the local authority on request, under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020.
- An energy performance certificate, valid for ten years, meeting the minimum standard under the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015. The required band has been the subject of consultation on raising it, so treat the current minimum as a floor.
- Smoke alarms on every storey and carbon monoxide alarms in rooms with a fixed combustion appliance, checked at the start of each tenancy, under the regulations amended in 2022.
- Deposit protection within 30 days and prescribed information served.
- Licence renewals where HMO or selective licensing applies, on their own five-year cycles.
Fifteen properties means fifteen of each, on fifteen different anniversaries, plus tenancy dates, rent review dates and insurance renewals. That is a database, not a memory. Whether you use dedicated property software, a shared calendar or a spreadsheet matters much less than whether every date has a reminder set two months before it expires.
The Homes (Fitness for Human Habitation) Act 2018 and the tightening repair standards being extended into the private sector mean response times to disrepair are also becoming measurable obligations rather than matters of judgement.
The agent's fee is a straightforward trade you should price properly
Full management from a letting agent typically costs 10% to 15% of rent plus VAT, with a separate tenant find fee, and often charges for inventories, renewals and Section 13 notices. On a £900 a month flat, 12% plus VAT is roughly £1,300 a year. Across fifteen properties, around £19,000.
That is a lot of money and it buys specific things: the phone calls, the contractor arrangement, the viewings, the referencing, the inspections, the compliance scheduling and the arrears chasing. The question is not whether it is expensive. It is what your own time is worth and how much of it those tasks consume.
The honest calculation has three parts. First, hours: track them for a month and multiply. Most self-managing landlords are surprised, because the visible tasks are a fraction of the total and the invisible ones arrive at inconvenient moments. Second, quality: a good agent gets a void filled faster than you will, and two weeks of void on fifteen properties is worth more than a chunk of the fee. Third, risk: an agent who is a member of a redress scheme and holds client money protection is a buffer between you and a compliance failure, though the legal duties remain yours.
Agents vary enormously, and the cheap ones cost more. The useful test at interview is not the fee percentage. It is asking how many properties each property manager handles, what their arrears process is, and what happens on a Friday night. The answers separate the trade quickly.
A middle path exists and is underused: use an agent for tenant find and referencing, which is where their marketing reach genuinely beats yours, and manage the tenancy yourself. That costs a few weeks' rent per let and removes the hardest part of the work you are worst at.
Maintenance is a schedule you keep or a bill you pay later
Reactive maintenance is the most expensive way to own buildings. Every job is an emergency, every emergency is priced as one, and the tenant's experience is a series of failures.
Planned maintenance is cheaper and duller. A roof inspected every few years, gutters cleared annually, boilers serviced on the same visit as the gas safety check, external decoration on a cycle, and a condition inspection at each tenancy change with a note of what will need doing within two years. Build a simple asset register: for each property, the age of the boiler, the age of the roof, the age of the windows, the last rewire. Those four items are most of your future capital expenditure and knowing their ages turns surprises into budget lines.
A sensible reserve is a percentage of rent set aside rather than a number picked from the air. Older stock needs more. A portfolio with no reserve is one boiler failure away from borrowing at a bad rate.
Systems, not heroics
At scale, the work is repetitive, which means it is systematisable. Standard tenancy documentation. A standard welcome pack that answers the questions tenants otherwise phone about. One contractor per trade who knows your properties, plus a backup, both set up for payment in advance so nobody is waiting on you. A single email address and phone number for tenants so nothing lands in a personal inbox. Rent monitored on a date, with a defined sequence of contact from day two rather than day thirty, because arrears are recoverable early and expensive later.
The tax side scales too. Making Tax Digital for Income Tax is being phased in, starting from April 2026 for those with qualifying income above £50,000, with lower thresholds following in subsequent years. Landlords with several properties will be inside it, which means quarterly digital updates and record keeping in software rather than a shoebox. Setting that up before it is compulsory is considerably less painful than afterwards.
Where this shows up in the game
Letting property arrives in Business Baron with the Property & Construction Track, an add-on to the full game. The owner is a finite resource in the game, with only so many hours, and until you hire management every extra property competes for them. Hand the work over and the margin drops while the capacity rises, which is the transition this article describes.