Average Rent, House Prices and Buy-to-Let Yield in Carmarthenshire (July 2026)
The average private rent in Carmarthenshire is £685 a month (ONS, July 2026) and the average house price £197,547 (HM Land Registry, June 2026): a gross yield of 4.2%, ranked 202 of 316 local authorities.
Rent in Carmarthenshire
The average private rent across all property types is £685 a month (+7.0% on a year earlier). The regional median in Wales is £754.
| Property | Per month | Per year |
|---|---|---|
| 1 bedroom | £499 | £5,988 a year |
| 2 bedrooms | £645 | £7,740 a year |
| 3 bedrooms | £738 | £8,856 a year |
| 4+ bedrooms | £996 | £11,952 a year |
The bedroom ladder in Carmarthenshire: one to two bedrooms adds 29.3% to the rent, two to three adds 14.4% and three to four-plus adds 35% (England-and-Wales medians 27.3%, 20.9% and 40.9%). The biggest step here is three to four or more bedrooms — the size where an extra room earns most, and the first place to look when comparing a conversion against its cost.
House prices in Carmarthenshire
The average price paid is £197,547 (+6.1% on a year earlier).
| Type | Average price |
|---|---|
| Detached | £282,658 |
| Semi-detached | £181,656 |
| Terraced | £148,584 |
| Flat | £93,095 |
Rents and prices moved together in Carmarthenshire — +7% and +6.1% over the year — so the gross yield on offer is roughly where it was twelve months ago. Carmarthenshire ranks 34th of 316 local authorities for rent growth and 47th of 316 for price growth; the England-and-Wales medians are +3.8% and +2.8%.
Gross yield by property type in Carmarthenshire
| Type | Rent / month | Average price | Gross yield | E&W median |
|---|---|---|---|---|
| Flat | £645 | £93,095 | 8.3% | 7.5% |
| Terraced house | £738 | £148,584 | 6% | 5.7% |
| Semi-detached | £738 | £181,656 | 4.9% | 4.6% |
| Detached | £996 | £282,658 | 4.2% | 4.1% |
On these pairings the strongest gross yield in Carmarthenshire is on flats at 8.3%, against an England-and-Wales median of 7.5% for that type; the weakest is detached. Gross figures ignore service charges, which usually make flats the thinnest net yield of the four.
What that means for a landlord
- Gross yield 4.2% (rent × 12 ÷ price) — rank 202 of 316 local authorities; the regional median is 4.4%. Net yield is lower once mortgage interest, insurance, maintenance and voids come off.
- Tenant affordability: referencing at 30× means a household income of about £20,550 a year for the average rent.
- EPC before 2030: 58% of EPCs lodged in Carmarthenshire over the last year were below band C — the level a rented home needs by 1 October 2030 — with 43% at D (EPC ratings in Carmarthenshire).
Lender maths on the averages. At a 5.5% stress rate and 145% rent cover — the common buy-to-let convention — the average rent of £685 supports a loan of about £103,072, which is 52.2% of the average price. That falls short of 75% loan-to-value, so a buyer of an average home here needs a larger deposit or a stronger rent to pass the stress test. Both numbers are conventions rather than rules — change them in the stress test.
Run the numbers for Carmarthenshire
- Yield calculator with £197,547 and £685 already filled in
- Mortgage stress test at 75% LTV on the average price
- Rent affordability: the income a tenant needs to reference at £685 a month
- Rental income tax on £8,220 a year of rent
Nearest neighbours by yield, in Wales
| Area | Rent | Price | Yield | Rent 12m |
|---|---|---|---|---|
| Wrexham | £766 | £212,502 | 4.3% | +3.1% |
| Denbighshire | £712 | £198,995 | 4.3% | +5.9% |
| Gwynedd | £722 | £206,665 | 4.2% | +7.3% |
| Vale of Glamorgan | £987 | £297,999 | 4% | +4.4% |
| Pembrokeshire | £692 | £210,862 | 3.9% | +4.9% |
| Ceredigion | £723 | £237,176 | 3.7% | +5.3% |
All 316 areas ranked · council tax in Carmarthenshire · EPC ratings in Carmarthenshire.
Rents: ONS, Price Index of Private Rents (average monthly private rent by local authority, July 2026). Prices: HM Land Registry UK House Price Index (average price, June 2026). Gross yield = rent × 12 ÷ price, our calculation. Contains public sector information licensed under the Open Government Licence v3.0; contains HM Land Registry data © Crown copyright and database right 2026. Rankings and medians are ours, across 316 local authorities.
Asked about this area
£685 a month across all property types (ONS Price Index of Private Rents, July 2026), up 7.0% on a year earlier.
£197,547 (HM Land Registry UK House Price Index, June 2026).
About 4.2% gross on the averages — £685 rent against a £197,547 price — ranking 202 of 316 local authorities. Net yield depends on your mortgage and costs.
Flats on our pairing: 8.3% gross (£645 rent on a £93,095 price), against an England-and-Wales median of 7.5% for that type.
Rents +7% against prices +6.1% over the year — moving together, so yield is broadly stable.
Referencing at 30 times the monthly rent points to roughly £20,550 a year of household income for the average home; the affordability calculator shows 24× and 36× too.