16 Carmarthen Street, Llandeilo, SA19 6AE
About 16 Carmarthen Street
16 Carmarthen Street is a five-bedroom mid-terrace house in Llandeilo (SA19 6AE). It has a recorded floor area of 166 m² (around 1787 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (February 2020) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in June 2011 the rating was E, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would lift it to B (score 81), a 2-band jump. Other recorded features include a basement. Period features are noted in the property record.
At 166 m² the property is well over the postcode median (71 m² across 17 EPCs), placing it in the larger end of the local stock. 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. Last sale on file: £240,000 in January 2021. Across the public record there are 5 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2002–2021, sale prices on this property compounded at 3.9% per year. Today's modelled estimate of £300,000 is 25% above the 2021 sale price.
Know exactly what you're buying at 16 Carmarthen Street
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms2
- StudyYes
- BasementYes
Outside
- Private gardenYes
Building
- Heating systemgas
- Period featuresYes
Energy performance
16 Carmarthen Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Planning history
16 Carmarthen Street has no planning applications on record.
Notable planning nearby
4applications of note in the surrounding area
We flagged 1 thing worth checking at 16 Carmarthen Street
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
16 Carmarthen Street has more than doubled in price since the earliest registered sale in 2002.
£300,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 18 years.
£240,000
Growth on file: 3.9% per year over 18 years.
Sales timeline
29 January 2021Most recent
£240,000
+112.4%over 6 years6 January 2015
£113,000
-49.8%over 2 years17 July 2012
£225,000
+9.2%over 5 years9 May 2007
£206,000
+71.7%over 4 years10 October 2002
£120,000
Median price across the last 5 sales in SA19 6AE: £166,000 (2025–2021).
Nearby sales in SA19 6AE
1 Carmarthen Street, Llandeilo, SA19 6AE
Sold Apr 2025
£230,00013 Carmarthen Street, Llandeilo, SA19 6AE
Sold Dec 2023
£166,0003a, Carmarthen Street, Llandeilo, SA19 6AE
Sold Dec 2023
£250,0007a, Carmarthen Street, Llandeilo, SA19 6AE
Sold Jan 2021
£140,000Penrhiw, Flat 1, 15 Carmarthen Street, Llandeilo, SA19 6AE
Sold Sept 2020
£83,650
Everything we know about 16 Carmarthen Street, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Carmarthen Street homes
On epc rating, 16 Carmarthen Street stands well clear of the street.
Price per m²
£1,446
Street avg £1,423
Floor Area
166 m²
Street avg 123 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
CO₂ Emissions
7.0 t/year
Street avg 8.1 t/year
Similar properties nearby
1 George Hill
SA19 6AU
1 Latimer Road
SA19 6HS
1 Greenfield Place
SA19 6DN
1 Johns Villas
SA19 6DP
1 Brynawel Terrace
SA19 6DA
1 Carmarthen Street
SA19 6AE
1 Clarendon Road
SA19 6LF
1 Heol Myrddin, Ffairfach
SA19 6PD
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
King Street — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.