18 ST MARYS MOUNT, CR3 6SJ is a Flat in Caterham, Surrey, England. It last sold for £425,000 in 2026. Its current EPC rating is C (score 76 out of 100), with potential to reach C. Floor area is approximately 127 m². This works out at about £3,346 per m², 34% below the town average of £5,067 per m² (context, not a valuation). Tenure: Leasehold. Local authority: Tandridge.
18 ST MARYS MOUNT
CATERHAM, SURREY · CR3 6SJ
Things you should know
A quick summary of this property, drawn from its records.
It's a flat property, held leasehold, with 127 m² of floor area.
Last sold for £425,000 in April 2026 — up 9% since its first recorded sale. · HM Land Registry
That sale works out at ~£3,346/m² — 34% below the town average of £5,067/m² (1,799 sales). · Context, not a valuation
Energy rating EPC C (score 76/100), with potential to reach C. · EPC, inspected 2025
Built 1996–2002. · Construction age band, from EPC
Facts from HM Land Registry (sales) and the EPC register (energy), under the Open Government Licence. Area comparisons are context, not a valuation or financial advice. Figures are as per our current dataset, which we're expanding continually.
Property Overview
Key facts from EPC & HM Land Registry records.
Built Form
End-Terrace
Tenure
Leasehold
Floor Area
127 m²
≈ 1,367 sq ft
Year Built
1996–2002
Construction age band, from EPC
Current EPC Rating
Band C · Score 76/100
Potential Band C · Valid until 23 September 2035
Local Authority
Tandridge↗
📍 Approximate location based on postcode centroid. Exact pin coming soon.
Value Insights
Price metrics derived from sale price and floor area.
Price per square metre
£3,346 /m²
Based on the 2026 sale
£/m² vs CATERHAM
−34% below the average sale price
Area avg £5,067/m² · 1,799 sales
Floor area
127 m²
≈ 1,367 sq ft · from EPC
Last sale price
£425,000
2 April 2026
£/m² over time: 2020: £3,071 → 2026: £3,346
How This Compares
How this property's 2026 sale price of £425,000 compares with the average sale price nearby — based on recorded house prices (not £/m²).
vs CR3 postcode area
CR3 average sale price: £498,004 · based on 3,156 sales
vs CATERHAM average
CATERHAM average sale price: £532,074 · based on 2,619 sales
Averages are across all property types sold 2020–2026 in our dataset, so they reflect the mix of homes in the area rather than like-for-like.
Sales History
2 sales recorded
Last sold
£425,000
2 April 2026
Total growth
+9.0%
First → latest sale
Annualised
+1.6%/yr
Average per year (CAGR)
Held for
5.3 yr
Between recorded sales
Price journey
£390,000 → £425,000
2020 → 2026
Price History
How this property's sale price has changed over time.
Sale price history for 18 ST MARYS MOUNT. Sold for £390,000 in 2020 and £425,000 in 2026, an increase of £35,000 (9%), about 1.4% per year.
+£35,000 over 6 years
≈ 1.4% per year
Summary: Sale price history for 18 ST MARYS MOUNT. Sold for £390,000 in 2020 and £425,000 in 2026, an increase of £35,000 (9%), about 1.4% per year.
2 April 2026
Latest£425,000
Flat · Leasehold
27 November 2020
£390,000
Flat · Leasehold
EPC Intelligence
Energy Performance Certificate history for this property.
Energy Efficiency Over Time
Year-on-year EPC score progression for this property.
EPC energy efficiency scores for 18 ST MARYS MOUNT. The property scored 76 (Rating C) in 2012 and 76 (Rating C) in 2025, a change of 0 points.
Point change
2012 to 2025
Summary: EPC energy efficiency scores for 18 ST MARYS MOUNT. The property scored 76 (Rating C) in 2012 and 76 (Rating C) in 2025, a change of 0 points.
Rating C · Score 76
LatestInspected 23 September 2025
Valid until 23 September 2035
Potential
Floor Area
127 m²
Construction Era
1996–2002
CO₂ Emissions
3 t/yr
Mains Gas
Yes
Walls
Cavity wall, as built, insulated (assumed)
GoodRoof
(another dwelling above)
N/AWindows
Fully double glazed
PoorMain Heating
Boiler and radiators, mains gas
GoodRating C · Score 76
Inspected 2 November 2012
Expired 2 November 2022
Potential
Floor Area
108 m²
Construction Era
1996–2002
CO₂ Emissions
2.6 t/yr
Mains Gas
—
Walls
Cavity wall, as built, insulated (assumed)
GoodRoof
(another dwelling above)
N/AWindows
Fully double glazed
AverageMain Heating
Boiler and radiators, mains gas
GoodiHow is the EPC score calculated?
The score (1–100) is the property's energy efficiency rating, produced by an accredited Domestic Energy Assessor using the UK Government's Standard Assessment Procedure (SAP). A higher score means a more energy-efficient home that's cheaper to run.
It's calculated from the property's physical characteristics, including:
- Size & floor area
- Construction & age
- Wall, roof & floor insulation
- Windows / glazing
- Main heating & controls
- Hot water & lighting
These are the factors shown in the certificates above. The score maps to a band — A (92–100, most efficient) down to G(1–20). The "potential" score is what could be achieved with the recommended improvements. Source: MHCLG EPC Register.
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