What Makes a Good Buy-to-Let Investment in South Wales in 2026?

Buy-to-let in South Wales can offer attractive opportunities for property investors, but choosing the right rental property involves much more than finding the highest advertised yield.

Buying a rental property can look deceptively simple.

Find a property, calculate the expected rent, arrange a mortgage and find a tenant.

But a property achieving a high monthly rent isn’t necessarily a good investment, and the cheapest property with the highest advertised yield isn’t automatically the best buy-to-let.

At Conrad Estate Agents, we work with landlords and rental properties across Barry, the Vale of Glamorgan and South Wales. When assessing a potential buy-to-let investment, we believe landlords should look beyond the headline yield and consider how the property is likely to perform over many years.

The best investment is often not the property with the most exciting numbers on paper. It is the one that combines sustainable rental demand, sensible costs, manageable maintenance and long-term appeal.


Start With Rental Demand

Before looking at yield, ask one simple question:

Who is actually going to rent this property?

A property can appear cheap compared with surrounding areas, but there may be a reason.

Strong rental investments tend to be located where a consistent pool of potential tenants exists.

Depending on the location, this could include professionals, families, couples, students or people who simply want to live close to employment and transport connections.

In Barry, for example, proximity to railway stations can be particularly attractive for tenants commuting towards Cardiff.

Schools, shops, town centres, healthcare, parking and access to major roads can all influence rental demand.

The investment needs a tenant before it can produce a return.


Don’t Buy Based on Yield Alone

Gross rental yield is a useful starting point.

The basic calculation is:

Annual Rent ÷ Purchase Price × 100

A £180,000 property achieving £1,000 per month produces £12,000 per year.

That gives a gross yield of approximately:

6.67%.

Compare that with a £250,000 property producing £1,150 per month.

Annual rent would be £13,800, producing a gross yield of:

5.52%.

Looking purely at those numbers, the £180,000 property appears considerably better.

But we still don’t know which is actually the better investment.


Gross Yield Doesn’t Tell You the Whole Story

The cheaper property could require considerably more maintenance.

It might have an older roof, inefficient heating, dated electrics or a garden that requires regular attention.

It could also be located in an area with higher tenant turnover or weaker long-term capital growth.

The more expensive property might attract long-term tenants, require little maintenance, and have fewer void periods.

That’s why landlords should focus on net return, not just gross yield.

Typical costs can include:

  • Mortgage interest
  • Property management
  • Buildings insurance
  • Repairs and maintenance
  • Compliance
  • Service charges where applicable
  • Void periods
  • Replacement appliances
  • Decoration
  • Taxation and accountancy

Two properties producing the same gross yield can deliver very different actual returns.


Understand the Likely Tenant Before Buying

One of the best ways to assess a potential investment is to identify the likely tenant before making an offer.

If you’re buying a three-bedroom house close to good schools, your likely market may be families.

That means a garden, parking, storage and bedroom sizes could be particularly important.

A one-bedroom apartment close to a railway station may appeal more to a professional commuter.

A property aimed at that market may benefit more from good transport connections and low running costs than from having a large garden.

Rather than buying a property and then asking who might rent it, successful landlords often work backwards:

Identify the tenant market → understand what they want → buy the appropriate property.


Two and Three-Bedroom Houses Can Offer a Strong Balance

No single property type is automatically the best investment.

However, traditional two and three-bedroom houses can offer a useful balance for many landlords.

They potentially appeal to a broad tenant market, including couples, small families and professionals.

They may also appeal to owner-occupiers when the landlord eventually decides to sell.

That resale market is important.

An investment shouldn’t only work when you’re buying it.

You should also consider who might want to buy it from you in 10 or 20 years.


Be Careful With Cheap Leasehold Apartments

Apartments can make excellent investments, particularly where purchase prices are relatively low compared with achievable rents.

However, landlords need to understand the lease.

A £130,000 apartment producing £850 per month might initially appear very attractive.

But if there is a substantial annual service charge, ground rent, major works liability or restrictive lease terms, the return can look very different.

Before purchasing a leasehold investment, understand:

Service charge

Lease length

Ground rent where applicable

Planned major works

Restrictions on letting

Building insurance arrangements

A high gross yield can quickly disappear if annual property costs are significant.


Condition Matters More Than Some Investors Think

Buying a cheaper property requiring work can create an opportunity.

But refurbishment costs need to be realistic.

A property that appears £20,000 cheaper than comparable homes isn’t necessarily a bargain if it requires £30,000 of work.

Landlords also need to consider the period during which the property cannot generate rent.

If refurbishment takes three months, that’s three months of potential lost income in addition to the renovation cost.

Sometimes paying more for a property that can be rented immediately produces the better overall return.


Energy Efficiency Is Becoming Increasingly Important

Energy efficiency affects both tenants and landlords.

A property that is expensive to heat may be less attractive to tenants, particularly as household budgets remain under pressure.

Landlords should therefore examine the EPC before purchasing.

Look beyond the headline rating and consider what improvements may eventually be required.

Older windows, inefficient heating systems and poor insulation can become significant future expenses.

Conversely, a warm, efficient property can be easier to let and may encourage tenants to stay longer.


Maintenance Can Destroy an Attractive Yield

Some properties are naturally more expensive to maintain than others.

Large gardens, old roofs, complicated heating systems, older buildings and extensive communal areas can all increase costs.

This doesn’t necessarily make them bad investments.

But those costs need to be reflected in the price you pay.

Imagine two properties each producing £12,000 per year.

Property A requires £500 of average annual maintenance.

Property B requires £2,500.

The headline rent is identical.

The investment performance isn’t.

When viewing a potential buy-to-let, don’t just look at how attractive the property is today.

Consider what is likely to need replacing during your ownership.


Don’t Ignore Compliance Costs

Rental property in Wales comes with legal and regulatory responsibilities.

Landlords need to understand the requirements that apply to their property and occupation contract, including electrical safety, gas safety where applicable, smoke and carbon monoxide alarms, and energy performance.

Rent Smart Wales also has requirements.

Incorporate these costs into investment calculations from the start, rather than treating them as unexpected expenses later.

A properly managed investment should have money allocated for compliance and maintenance every year.


Think About Void Periods

A property isn’t producing rent while it is empty.

Even an investment with an excellent theoretical yield can underperform if it regularly experiences long void periods.

Location, property type, condition and pricing all influence how quickly a property can be re-let.

This is another reason established rental locations can be attractive.

A slightly lower yield in an area with consistent tenant demand can sometimes outperform a higher-yielding property that regularly sits empty.


Should You Buy the Cheapest Property Possible?

Not necessarily.

Price matters enormously, but value and cheapness aren’t the same thing.

Sometimes, inexpensive properties produce excellent rental returns.

Other properties are cheap because demand is weak, maintenance is high, or resale prospects are limited.

An investor needs to understand why a property appears inexpensive.

If you can identify a problem you can realistically solve, there may be an opportunity.

If the problem is fundamental to the location or property type, a low purchase price might not compensate for it.


Capital Growth Still Matters

Some landlords focus almost entirely on rental income.

Others buy primarily hoping that the property will increase in value.

We believe a strong long-term investment ideally considers both.

Rental income helps the investment perform during ownership.

Capital growth can create wealth over the longer term.

Nobody can guarantee future house-price growth, but landlords can consider the fundamentals.

Is the area attracting investment?

Are transport connections improving?

Are people moving there?

Is housing demand strong?

Is employment accessible?

Would owner-occupiers want the property too?

These questions can help investors assess longer-term potential.


Barry and the Vale of Glamorgan

Barry has several characteristics that make it interesting from a rental investment perspective.

It offers railway connections towards Cardiff, a wide range of housing stock, coastal areas, established residential neighbourhoods and generally lower property prices than some neighbouring locations.

But Barry itself isn’t one single market.

Barry Island, the West End, Cadoxton and other parts of the town can attract different tenants and command different rents.

The same applies across the Vale of Glamorgan.

A property should therefore be assessed at street and property level, not simply by postcode or town.


Look Beyond Barry Too

Investment opportunities exist throughout South Wales.

Cardiff offers a large employment base and significant rental demand, although purchase prices can be higher.

Bridgend can provide access to both Cardiff and Swansea employment markets.

The South Wales Valleys may offer lower entry prices and potentially stronger headline yields in some locations.

Newport also benefits from its position along the M4 corridor.

Each market has different strengths and risks.

A landlord shouldn’t necessarily buy in the area with the highest advertised yield.

The objective is to find the market that fits the investor’s strategy.


Decide What Type of Landlord You Want to Be

This important question often gets overlooked.

Some landlords are comfortable buying refurbishment projects, managing contractors and actively improving properties.

Others want a relatively passive investment that a professional can manage.

Neither approach is wrong.

But buying a high-maintenance property when you want a hands-off investment can quickly become frustrating.

Before buying, decide whether your priority is:

Maximum yield

Long-term capital growth

Low maintenance

Regular cash flow

Portfolio expansion

Value-add opportunities

The right property depends on the objective.


Run the Numbers Before Making an Offer

Before purchasing any investment property, build a realistic financial model.

Include the expected rent but also allow for:

Mortgage costs
Management fees
Maintenance
Insurance
Compliance
Void periods
Service charges
Refurbishment
Taxation and professional costs

Then stress-test the investment.

What happens if the property is empty for two months?

What happens if the boiler needs replacing?

What happens if mortgage costs remain higher than expected?

A good investment should ideally still make sense when everything doesn’t go perfectly.


Speak to a Letting Agent Before You Buy

One of the simplest steps a potential landlord can take is asking a local letting agent for a rental assessment before purchasing the property.

We regularly speak with investors considering properties across South Wales.

Sometimes the advertised rental estimate is realistic.

Sometimes it isn’t.

Knowing the likely rent, potential tenant market and local demand before committing to the purchase can prevent an expensive mistake.

It can also help you spot opportunities you might otherwise overlook.


What Makes a Good Buy-to-Let Investment?

Ultimately, we believe a strong buy-to-let investment combines several factors:

A sensible purchase price.

Strong tenant demand.

A realistic rental yield.

Manageable ongoing costs.

Good property condition.

Limited void risk.

Long-term resale appeal.

A location people genuinely want to live in.

The highest-yielding property on a spreadsheet isn’t necessarily the property that will create the most wealth.

The best investment is often the one that continues performing consistently for many years.


Looking for a Buy-to-Let Property in South Wales?

Conrad Estate Agents works with landlords and property investors across Barry, the Vale of Glamorgan and South Wales.

If you’re considering purchasing an investment property, we can provide an indication of achievable rent, discuss local tenant demand and help you understand how the property could perform as a rental before you buy.

We also provide tenant-find, rent collection and full property management services once the property is ready to let.

Contact Conrad Estate Agents to discuss your next buy-to-let investment or arrange a rental assessment.

This article is for general information only and does not constitute financial, mortgage, investment, tax or legal advice. Property investors should obtain appropriate professional advice before purchasing an investment property.