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Start with the current market in Porthmadog, Borth-y-Gest, its direction of travel and the mix of homes being sold. Use Compare, Save and Watch to narrow a shortlist.
The data, disclosure rules and publication thresholds stay the same; this changes how the evidence is organised.
Median price
£190,000
Eligible sales · trailing 24 months
Per square metre
£2,170/m²
Matched sales · trailing 24 months
5-year change
+6.9%
Rolling 12-month medians, five years apart
From rolling peak
-8.3%
Against the highest rolling 12-month median
Market read
Porthmadog, Borth-y-Gest (LL49) has a median sale price of £190,000 — around £2,170 for each square metre of floor area. The district is trading 39.7% below the high set in 2023. Over the past five years prices have risen 36.4%. Among homes with 8 habitable rooms, which counts receptions as well as bedrooms, floor area runs from 137 to 252 m² — a 1.8-fold difference for the same nominal size. The number of sales is down 31% against the previous period.
Floor-area evidence
Repeat EPC records in this area show some variation in recorded floor area.
Among 386 dwellings with repeat EPCs in Porthmadog, Borth-y-Gest, the typical recorded floor-area range was 6%. This describes the consistency of repeated records, not the condition or value of an individual home.
Market signal
Each point is the median of sales in the three months ending that month.
Market shape
Lower-quarter price
£150,000
25% of recent eligible sales were below this
Median price
See headline
Same 24-month sale population
Upper-quarter price
£263,500
25% of recent eligible sales were above this
Property types
£277,500
£3,000/m²
£170,000
£1,964/m²
Energy-rating evidence
These are matched-sale associations, not a valuation of energy efficiency. Each rating cell contains at least five sales.
£191,000
£2,225/m²
£177,500
£2,099/m²
£192,500
£2,393/m²
£175,000
£2,402/m²
Energy-transition evidence
This is the latest available EPC record for each identifiable certified dwelling, not a census of every home or an assessment of an individual property.
EPC sample
1,582
Latest certificate to 2 August 2026
Rated D–G
70%
Current EPC rating in the certificate sample
Potentially higher rating
78%
Potential EPC rating exceeds current rating
EPC potential values are modelled certificate outputs, not quotes for retrofit work, future bills, a value uplift or a letting/compliance conclusion. Source: Energy Performance of Buildings Register domestic certificates.
The space signal
Property listings describe homes by bedroom count, but that is not recorded in any public dataset. What is recorded is the number of habitable rooms — bedrooms and reception rooms together — and the total floor area. In Porthmadog, Borth-y-Gest, homes with the same number of habitable rooms vary enormously in size.
| Habitable rooms | Smaller (10th) | Typical | Larger (90th) | Sales |
|---|---|---|---|---|
| 2 | 27 m² | 28 m² | 40 m² | 22 |
| 3 | 43 m² | 56 m² | 75 m² | 102 |
| 4 | 57 m² | 70 m² | 84 m² | 139 |
| 5 | 75 m² | 88 m² | 116 m² | 180 |
| 6 | 93 m² | 110 m² | 153 m² | 68 |
| 7 | 109 m² | 131 m² | 170 m² | 43 |
| 8 | 137 m² | 180 m² | 252 m² | 20 |
| 9 | 128 m² | 145 m² | 159 m² | 9 |
The widest spread here is among homes with 8 habitable rooms, ranging from 137 to 252 m². Two properties advertised the same way can differ by more than half their floor area, which is why price per square metre is a more useful comparison than price alone.
Data current to 5 June 2026.