Buying an investment property is a different exercise to buying a home to live in, the questions that matter most shift from “do I love this place” to “does this make financial sense.” Here’s what’s worth working through before committing to a purchase.
Start With Rental Demand, Not Just Price
A cheap property is only a good investment if there’s genuine tenant demand for it. Look at local employment, transport links, universities, and hospitals, all reliable drivers of consistent rental demand, rather than buying purely because the purchase price looks attractive. A property that’s hard to let sits empty, and an empty property earns nothing regardless of how good a deal it looked like on paper.
Understand Gross Yield vs Net Yield
Gross yield, annual rent divided by purchase price, is a useful quick comparison tool, but it doesn’t reflect what actually lands in your pocket. Net yield strips out mortgage interest, management fees, service charges, maintenance, and insurance, and it’s the figure that actually tells you how the investment performs. Any yield quoted without further detail is worth digging into before taking it at face value.
Know How Much Cash You Actually Need
The deposit gets most of the attention, but it’s only one part of the total cash required. Buy-to-let mortgages typically require a 25% deposit, but on top of that sits Stamp Duty Land Tax, including a 3% surcharge that applies to any property that isn’t your main home, legal and conveyancing fees, a mortgage arrangement fee, and, for a lettable property, furnishing costs if it isn’t going out unfurnished. A cash buffer held back for the early months of ownership is also worth budgeting for rather than treating as optional. Underestimating this total is one of the most common reasons first-time investors run into difficulty — not because the investment itself was wrong, but because they ran out of accessible cash before completion.
Decide on Financing Structure Early
Most property investors use interest-only mortgages rather than repayment ones, since interest-only keeps monthly costs lower and maximises cash flow, the original loan balance is repaid when the property is eventually sold rather than gradually over the mortgage term. A repayment mortgage reduces the debt over time but at the cost of significantly higher monthly payments, which eats into the income the property generates. It’s worth speaking to a whole-of-market mortgage broker who specialises in buy-to-let lending, rather than a high-street bank, since specialist brokers typically have access to a wider range of products and better rates for this kind of borrowing.
Choose an Ownership Structure Before You Buy
How a property is held, in a personal name or through a limited company (SPV), has a significant impact on long-term tax efficiency, and it’s a decision that’s much harder to unpick after a purchase than to get right beforehand. Buying personally is simpler and typically comes with slightly lower mortgage rates, but rental income is taxed at personal income tax rates, with only a 20% tax credit available on mortgage interest rather than a full deduction. A limited company structure allows mortgage interest to be deducted in full as a business expense and profits to be taxed at Corporation Tax rates, which can be more efficient for higher-rate taxpayers or anyone planning to reinvest profits into further purchases — though company mortgage rates tend to run slightly higher and there’s the added cost of annual accounts. This is a decision worth taking specialist tax advice on rather than defaulting to whichever feels simpler.
Factor In Property Condition and Ongoing Maintenance
An older property may come with a lower purchase price but higher ongoing maintenance costs, while a new-build typically costs more upfront but requires less immediate outlay for repairs. Either way, it’s worth budgeting realistically for maintenance rather than assuming a property will generate pure profit from day one, service charges, insurance, and periodic repairs all need to be accounted for in the net yield calculation.
Think About the Exit, Not Just the Entry
Before buying, it’s worth considering how easy the property would be to sell in future, and whether the area has realistic prospects for capital growth over the timeframe you plan to hold it. A property that’s difficult to let is often equally difficult to sell, the same characteristics that put off tenants (poor transport links, oversupply of similar units, limited local employment) tend to put off future buyers too.
The Bottom Line
The strongest investment decisions come from working through all of these factors together rather than focusing on purchase price or headline yield alone. A property that looks attractive on a single measure can still turn out to be a poor investment once financing costs, tax structure, and total cash requirements are properly accounted for.