How much is Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN worth?
Estimated value — July 2026
£551,000
Likely range £551,000 – £551,000
Latest recorded sale October 2015
57%
confidence
Medium
Property details
Detached house
Caernarfon · LL55 3BN
Energy performance
Electricity (Not Community) · EPC 0418-3079-7217-3535-8990 · inspected March 2015
Address
- District
- Gwynedd
- County
- Gwynedd
Value over time
- Modelled value
- Recorded sale
- Today's estimate
Modelled by indexing this property's most recent recorded sale, month by month, against the UK House Price Index for its area and property type. Earlier sales are shown as recorded. Today's estimate also blends in the other valuation methods, so it can sit a little off the line.
View as a table
| Year | Modelled value | Recorded sale |
|---|---|---|
| 2015 | £359,441 | £369,950 |
| 2016 | £384,186 | — |
| 2017 | £396,564 | — |
| 2018 | £404,032 | — |
| 2019 | £428,587 | — |
| 2020 | £461,180 | — |
| 2021 | £496,073 | — |
| 2022 | £548,054 | — |
| 2023 | £549,734 | — |
| 2024 | £524,945 | — |
| 2025 | £530,216 | — |
| 2026 | £550,572 | — |
Sale history
Mortgage calculator
£2,957
Estimated monthly repayment
£495,900
Loan amount
£568,710
Total interest
£1,064,610
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
About this property
Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN is a detached house in Caernarfon, Gwynedd (LL55). Stede's estimated value for July 2026 is £551,000. It is the average of 2 independent methods that re-index recorded sale prices to today. The confidence score is 57 out of 100 (medium), based on how recent the most recent recorded sale is.
It last sold in October 2015 for £369,950. The current estimate is 49% higher than that price. The current owner has held it for about 11 years.
Its EPC energy-efficiency rating is band B (89 out of 100). The certificate records a total floor area of 279 m² (3,003 sq ft). It was lodged in March 2015.
The modelled value is up 5% over the past year and up 17% over the past five years.
Among 4 nearby properties Stede tracks in the LL55 area, estimated values run from £75,000 to £548,000. This detached house's £551,000 sits above that range.
Common questions
How much is Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN worth?
Stede estimates Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN is worth £551,000 as of July 2026. The estimate is generated automatically from recorded sale prices and the UK House Price Index, and is not a formal valuation.
When did Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN last sell?
It last sold in October 2015 for £369,950.
What type of property is Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN?
It is recorded as a Detached house in the LL55 postcode area.
What is the EPC rating of Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN?
Trefalyn, Penisarwaun, Caernarfon, Gwynedd, LL55 3BN has an EPC energy-efficiency rating of band B (89 out of 100). The certificate records a floor area of 279 m² (3,003 sq ft). EPC data is published by the Ministry of Housing, Communities & Local Government and reflects the most recent certificate on record.
How reliable is this estimate?
The confidence score is 57 out of 100 (medium), which reflects how recent the most recent recorded sale is rather than local market volatility. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
Stede runs 2 independent methods that re-index this property's recorded sale prices to today using the House Price Index for its type and region, then takes the average. Full detail is on the methodology page.
How we calculated this
This estimate averages 2 valuation methods, each re-indexing recorded sale prices to today. The confidence score reflects how recent the most recent recorded sale is.
2
Valuation methods used
1
Recorded sales on file
2015
Most recent recorded sale