25 St Margarets Avenue, Barnet, London, N20 9LL

25 St Margarets Avenue is a three-bedroom semi-detached house in Barnet, London, London (N20 9LL). It has a recorded floor area of 102 m² (around 1098 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (December 2025) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2015. Between certificates, window efficiency dropped from Average to Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 79). This certificate was lodged in the last six months, so the rating reflects current condition.

One planning record on file: an extension approved in 2000. Past consents include an extension, meaningful when judging how the property has evolved. Across 2000–2016, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £808,000 is 19.7% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£615/sq ft) was about 75.5% above the typical sold price in the postcode. On the market in March 2016 and unlisted since — roughly 10 years.