Cardiff University, Cardiff Metropolitan and a University of South Wales campus underpin year-round student demand.
Buying Services
HMOs to buy in Cardiff
Cardiff is one of the UK's strongest HMO markets - a young, growing city where constrained supply meets relentless student and professional demand. We source compliant, well-positioned HMOs and underwrite them on real local data, so you buy on the numbers, not the hype.
- 60,000+students across Cardiff's universities
- 8-10%typical gross yields on room-by-room HMOs
- 400+rooms already managed by Arthur & Hamilton
Why Cardiff
Demand is structural, and supply is capped
The case for Cardiff HMOs isn't a hunch - it's built on the city's student population, its planning regime, and a licensing bar that favours professional operators.
Planning permission is required to create new small HMOs, constraining supply and protecting the value of existing, consented stock.
Larger HMOs need a Cardiff Council licence, rewarding well-run, compliant properties and squeezing out amateur operators.
All-inclusive rooms in popular wards let quickly to students and young professionals, often before they reach the open market.
The numbers
Why investors choose rooms over single lets
Letting a property by the room typically generates materially more gross income than a single tenancy on the same building. The trade-off is more management - which is exactly what we handle.
Indicative gross yields for comparable Cardiff stock. Actual returns depend on price paid, room count, condition and finance.
Typical gross yield - Cardiff
Worked example
From gross headline to real net return
Headline yields look great until the running costs land. Here's a transparent, illustrative model for a 5-bed Cardiff HMO so you can see what actually reaches the bottom line.
Assumptions
- Purchase price
- £325,000
- Lettable rooms
- 5
- Room rent (all-inclusive)
- £550 pcm
- Annual gross rent
- £33,000
Annual running costs
- Utility bills & broadband
- £6,000
- Letting & management (12%)
- £3,960
- Voids & maintenance allowance
- £2,640
- Licensing, insurance & compliance
- £1,200
- Net operating income
- £19,200
Gross vs net yield
Even after generous cost allowances, the room-by-room model holds a net yield roughly on par with the gross yield of a typical single let - the core reason HMOs remain a favoured strategy.
Where to buy
Cardiff's strongest HMO areas
Different wards suit different strategies - from deep student demand to steady professional lets and emerging-value plays.
Cathays
Walking distance to Cardiff University and the city centre. The deepest student-let market in Wales, with consistently strong room demand.
Plasnewydd & Roath
A mix of students and young professionals around Albany Road and City Road. Period terraces convert well to high-quality HMOs.
Heath & Gabalfa
Close to the University Hospital of Wales and Heath Park campus - steady demand from NHS staff, postgraduates and key workers.
Riverside & Canton
More affordable entry prices west of the river with regeneration momentum, appealing to professional sharers.
Buy with your eyes open
Licensing & compliance, decoded
HMOs carry more regulation than a standard let. We check all of this before you exchange - getting it wrong after purchase is expensive.
Planning & Article 4
Cardiff's city-wide Article 4 Direction removes permitted-development rights, so creating a new small (C4) HMO needs planning permission. We check planning history and lawful use before you commit.
Rent Smart Wales
Every landlord in Wales must register with Rent Smart Wales, and anyone managing the property must hold a licence. We can hold the management licence on your behalf.
Mandatory HMO licence
A property let to five or more people forming two or more households needs a mandatory HMO licence from Cardiff Council. Some wards also operate additional licensing for smaller HMOs.
Minimum room sizes
Welsh licence conditions set floor-area minimums: 6.51 m² for one adult, 10.22 m² for two adults, and 4.64 m² for a child under 10. Rooms below 4.64 m² cannot be used for sleeping.
Fire & safety certification
Interlinked mains alarms, fire doors, emergency lighting, an annual gas safety record, a five-yearly EICR and a valid EPC are all required. We manage the full certificate calendar.
Amenity standards
Councils set ratios for bathrooms, kitchen facilities and waste storage relative to occupancy. We assess every layout against these before purchase, not after.
How we work
From criteria to a performing asset
- 01
Define your criteria
Budget, target yield, area and whether you want turnkey or a refurbishment project.
- 02
Sourcing & matching
We surface on- and off-market HMOs that fit, with planning and licensing context attached.
- 03
Underwriting
A realistic rent-by-room and net-yield model using live local lettings data - not headline figures.
- 04
Due diligence & offer
Compliance review, survey coordination and offer negotiation through to a confident purchase.
- 05
Onboard to management
Licensing, certification and tenanting handled so the asset performs from day one.
Register your interest
See live opportunities first
Tell us your budget and target area and we'll match you to compliant Cardiff HMOs - many before they reach the open market. No obligation, and your details stay with us.
- Off- and pre-market HMOs that fit your brief
- Honest, data-backed rent and yield figures
- A single point of contact from search to completion
Thinking of buying a HMO house
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