11 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
About 11 Bryn Avenue
11 Bryn Avenue is a semi-detached house in Upper Brynamman, Ammanford, Ammanford (SA18 1BD). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (April 2021) shows a C (score 72). When first surveyed in June 2010 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Average to Very Good and window efficiency went from Poor to Good. The recommended improvements would push it to B (score 87).
Held since September 2010 — that's 16 years off the open market, well above the local norm. Today's modelled estimate of £164,000 sits 118.7% above the 2010 sale of £75,000. On a £-per-square-foot basis, the last sale (£70/sq ft) was about 26.3% below the postcode norm.
Know exactly what you're buying at 11 Bryn Avenue
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Switched from solid fuel to cleaner energy source
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
11 Bryn Avenue has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 11 Bryn Avenue
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
11 Bryn Avenue valuation sits well clear of the typical sold price in this postcode.
£164,000
Modelled from EPC, postcode comparables.
£75,000
Recorded with HM Land Registry.
Sales timeline
16 September 2010Most recent
£75,000
Median price across the last 5 sales in SA18 1BD: £132,000 (2024–2015).
Nearby sales in SA18 1BD
6 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
Sold Nov 2024
£125,00015 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
Sold Oct 2023
£193,00013 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
Sold Sept 2017
£135,0001 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
Sold Jul 2016
£132,0002 Bryn Avenue, Upper Brynamman, Ammanford, SA18 1BD
Sold Mar 2014
£75,000
Everything we know about 11 Bryn Avenue, 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 Bryn Avenue homes
11 Bryn Avenue outperforms the street on habitable rooms by a wide margin.
Price per m²
£750
Street avg £1,042
Floor Area
100 m²
Street avg 97 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
3.2 t/year
Street avg 4.5 t/year
Similar properties nearby
1 Bishop Road, Garnant
SA18 1NA
1 Chapel Street, Upper Brynamman
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1 Brynceunant, Upper Brynamman
SA18 1AH
1 Clos David Morgan, Garnant
SA18 1AZ
1 Amman Cottages, Lower Brynamman
SA18 1SL
1 Banwen Place, Lower Brynamman
SA18 1SP
1 Arcade Terrace, Garnant
SA18 1LG
1 Bryn Road, Upper Brynamman
SA18 1AU
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Heol Gelynen — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.