20, St Helens Grove, MK10 9FG

20 St Helens Grove is a 141 m² / 1,518 sq ft detached home in Monkston. It sold for £455,000 in November 2018. Indexed forward to today's value, that sale is roughly £520k. Recent local prices imply a broad valuation context of £447k to £658k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
Date Paid price Annual growth After inflation
Nov 2018 £455,000 0.0% -2.2%
Apr 2018 £455,000 * 8.9% 7.1%
Jun 2012 £275,000 4.4% 2.0%
Feb 2001 New build New £169,950 na na

*This price paid record has been flagged by Land Registry as a 'Category B: Additional Price Paid entry'. This could be due to a variety of reasons, such as the sale being a buy-to-let purchase, a repossession or a transfer to a limited company. When Land Registry suspects that a sale does not reflect full market value (e.g. part-ownership or right to buy), these transactions can be flagged as well. For this reason, we exclude them from our area statistics.

Internal area
141 square metres (1,518 square feet) according to latest EPC inspection
Price per internal area

This property sold for £3,226 per square metre (£300 per square foot) in Nov 2018. Indexed forward to today's value, this is roughly £3,686 per square metre (£342 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Nov 2018 £455,000 £3,227 £519,748 £3,686
Apr 2018 £455,000 £3,227 £529,383 £3,754
Jun 2012 £275,000 £1,950 £460,283 £3,264
Feb 2001 £169,950 £1,205 £464,414 £3,294

Calculated using the latest EPC internal area of 141 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 £519,748. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Monkston are now selling for between £3,170 and £4,670 per square metre (£294 and £433 per square foot). Based on an internal area of 141 m², this implies a valuation between £447,000 and £658,000. 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
4
Type
Detached
Council tax band
E
Plot size
372 square metres (4,004 square feet) - map showing freehold boundary lines
Planning applications
Planning ref:
March 2016 16/00624/NMA
Type:
Amendments or alterations arising from an existing or previous application
Status:
Application approved
Address:
20 St Helens Grove Monkston Milton Keynes
Description:
Non material amendment to 15/03003/FUL to add a window to the west elevation and change external material of rear single storey extension to brickwork to match existing
Planning ref:
January 2016 15/03003/FUL
Type:
Full and householder planning application
Status:
Application approved
Address:
20 St Helens Grove Monkston Milton Keynes
Description:
Single storey rear and two storey front extension
EPC Inspections
Summary:
18 March 2016 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
ECO assessment
Tenure:
Owner-occupied
Property type:
Detached House , has 8 habitable rooms. Estimated year built 1991 to 1995
Area:
141 sqm (1,518 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, 200 mm loft insulation. Heating: Boiler and radiators, mains gas.
Summary:
26 February 2014 - energy performance certificate grade C
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
None of the above
Tenure:
Owner-occupied
Property type:
Detached House , has 8 habitable rooms. Estimated year built 1996 to 2002
Area:
126 sqm (1,356 square foot) total internal area
Comments:
Walls: Cavity wall, as built, insulated (assumed). Roof: Pitched, 200 mm loft insulation. Heating: Boiler and radiators, mains gas.
Summary:
12 November 2008 - energy performance certificate grade D
Reason for EPC:
None
Tenure:
Private rental
Property type:
None , has 7 habitable rooms. Estimated year built 1996 to 2002
Area:
125 sqm (1,345 square foot) total internal area
Comments:
Frequently asked questions

20 St Helens Grove 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 £519,748.
  • Based on an internal area of 141 m² and recent prices in Monkston, this implies a lower and upper quartile range from £447,000 to £658,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 20 St Helens Grove last sold for £455,000 in November 2018.

HouseMetric shows 20 St Helens Grove as 141 m² (1,518 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 4 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 18 March 2016. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 20 St Helens Grove was in council tax band E. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

20 St Helens Grove is in postcode MK10 9FG, in Monkston. You can also view HouseMetric's sold-price page for St Helens Grove, MK10 9FG or analysis of the Monkston 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.