Property data
Sale history
Date Paid price Annual growth After inflation
Oct 2025 £90,000 -1.5% -4.2%
Aug 2006 New build New £120,000 na na
Floor plan

Archived estate agent floor plan for Onnum.

Floorplan Onnum
View floorplan
Internal area
46 square metres (495 square feet) according to latest EPC inspection
Price per internal area

This property sold for £1,956 per square metre (£182 per square foot) in Oct 2025. Indexed forward to today's value, this is roughly £1,869 per square metre (£174 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Oct 2025 £90,000 £1,957 £85,961 £1,869
Aug 2006 £120,000 £2,609 £90,694 £1,972

Calculated using the latest EPC internal area of 46 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £85,961. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Gilsland are now selling for between £1,850 and £2,930 per square metre (£171 and £272 per square foot). Based on an internal area of 46 m², this implies a valuation between £85,000 and £135,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
2
Type
Flat
Council tax band
na
Archived listings
History:
Archived sales listing for Onnum . Advertised on multiple portals. It was reduced on 24/09/2024. It last appeared Mar 2025.
Photos:

There are 16 archived estate agent listing photos (taken in July 2024) for Onnum .

Photos for Onnum
View photos
Advertiser remarks:
  • 2 bedrooms
  • 1 bathrooms
EPC Inspections
Summary:
28 March 2023 - energy performance certificate grade C
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Maisonette , has 3 habitable rooms. Estimated year built 2003 to 2006
Area:
46 sqm (495 square foot) total internal area
Comments:
Walls: Sandstone or limestone, as built, insulated (assumed). Roof: Roof room(s), ceiling insulated. Heating: Electric storage heaters.

Summary:
02 June 2021 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
ECO assessment
Tenure:
Private rental
Property type:
3rd floor flat on the top floor in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 1991 to 1995
Area:
47 sqm (506 square foot) total internal area
Comments:
Walls: Sandstone or limestone, as built, insulated (assumed). Roof: Roof room(s), insulated (assumed). Heating: Room heaters, electric.

Summary:
27 July 2012 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Unknown
Property type:
3rd floor flat on the top floor in an apartment block with 1 storeys , has 3 habitable rooms. Estimated year built 1991 to 1995
Area:
47 sqm (506 square foot) total internal area
Comments:
Walls: Sandstone, as built, insulated (assumed). Roof: Roof room(s), insulated (assumed). Heating: Electric storage heaters.
Frequently asked questions

Onnum is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £85,961.
  • Based on an internal area of 46 m² and recent prices in Gilsland, this implies a lower and upper quartile range from £85,000 to £135,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, Onnum last sold for £90,000 in October 2025.

HouseMetric shows Onnum as 46 m² (495 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 2 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is C, from an inspection dated 28 March 2023. EPC information comes from the public Energy Performance Certificate data for England and Wales.

Onnum is in postcode CA8 7EH, in Gilsland. You can also view HouseMetric's sold-price page for CA8 7EH or analysis of the Gilsland property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 1 June 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.

For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.