Ardarragh House, South Row, OX11 0RT

Ardarragh House South Row is a 280 m² / 3,014 sq ft detached home in Harwell. It sold for £963,500 in March 2021. Indexed forward to today's value, that sale is roughly £1,179k. Recent local prices imply a broad valuation context of £1,098k to £1,333k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
£963,500 on Mar 2021
Floor plan

Archived estate agent floor plan for Ardarragh House, South Row.

Floorplan Ardarragh House
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Internal area
280 square metres (3,014 square feet) according to latest EPC inspection
Price per internal area

This property sold for £3,441 per square metre (£320 per square foot) in Mar 2021. Indexed forward to today's value, this is roughly £4,209 per square metre (£391 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Mar 2021 £963,500 £3,441 £1,178,567 £4,209

Calculated using the latest EPC internal area of 280 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 £1,178,567. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Harwell are now selling for between £3,920 and £4,760 per square metre (£364 and £442 per square foot). Based on an internal area of 280 m², this implies a valuation between £1,098,000 and £1,333,000. 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
5
Type
Detached
Council tax band
na
Plot size
1,889 square metres (20,333 square feet) - map showing freehold boundary lines
Archived listings
History:
Archived sales listing for Ardarragh House South Row. Advertised on multiple portals. It was added on 27/11/2020. It last appeared Mar 2021.
Photos:

There are 19 archived estate agent listing photos (taken in November 2020) for Ardarragh House South Row.

Photos for Ardarragh House South Row
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Advertiser remarks:
  • 5 bedrooms
  • 3 bathrooms
Planning applications
Planning ref:
May 2025 P25/V0795/S73
Type:
Amendments or alterations arising from an existing or previous application
Status:
Application approved
Address:
Ardarragh House South Row Chilton Didcot
Description:
Variation of condition 2 (Approved plans) on application P23/V2567/HH-changes to roof eaves and design of the single storey extension. (A new two storey side extension and single storey rear extension, 3No. roof dormers and insertion of a rooflight.)
Planning ref:
August 2021 P21/V1794/HH
Type:
Full and householder planning application
Status:
Application approved
Address:
Ardarragh House South Row Chilton Didcot
Description:
Proposed extension of dwelling to provide double garage. Conversion of existing double garage and roofspace over to form residential annex for ancillary purposes only.
EPC Inspections
Summary:
10 June 2020 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Detached Bungalow , has 10 habitable rooms. Estimated year built 1983 to 1990
Area:
280 sqm (3,014 square foot) total internal area
Comments:
Walls: Cavity wall, as built, insulated (assumed). Roof: Pitched, 250 mm loft insulation. Heating: Boiler and radiators, oil.
Summary:
06 October 2008 - energy performance certificate grade E
Reason for EPC:
None
Tenure:
Owner-occupied
Property type:
None , has 9 habitable rooms. Estimated year built 1983 to 1990
Area:
240 sqm (2,583 square foot) total internal area
Comments:
Frequently asked questions

Ardarragh House South Row 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 £1,178,567.
  • Based on an internal area of 280 m² and recent prices in Harwell, this implies a lower and upper quartile range from £1,098,000 to £1,333,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, Ardarragh House South Row last sold for £963,500 in March 2021.

HouseMetric shows Ardarragh House South Row as 280 m² (3,014 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 5 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 D, from an inspection dated 10 June 2020. EPC information comes from the public Energy Performance Certificate data for England and Wales.

Ardarragh House South Row is in postcode OX11 0RT, in Harwell. You can also view HouseMetric's sold-price page for South Row, OX11 0RT or analysis of the Harwell 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.