25 Church Street is a six-bedroom detached house in Guilden Morden, Royston, Royston (SG8 0JD). It has a recorded floor area of 289 m² (around 3111 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (December 2017) shows a C (score 79), near the top of the C band. When first surveyed in July 2009 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Good and window efficiency went from Average to Very Good. The recommended improvements would push it to B (score 85). Main heating runs on oil. Other recorded features include notable views. Period features are noted in the property record. Our model identifies extension potential, subject to local planning policy.
Sale prices here have outpaced England HPI: 8.8% per year against 0% for the wider region. Today's modelled estimate of £933,000 is 18.1% above the 2018 sale price. At 289 m² the property is well over the postcode median (111 m² across 28 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 86% of similar EPCs). 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. 8 planning records sit against the property, 5 approved, 0 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Most recent transfer: November 2018 at £790,000.
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Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
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Sale price has at least doubled since 2010.
£933,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.8% per year over 9 years.
£790,000
Growth on file: 8.8% per year over 9 years.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
EPC Rating for 25 Church Street runs comfortably ahead of the street norm.
Price per m²
£2,734
Street avg £4,306
Floor Area
289 m²
Street avg 128 m²
CO₂ Emissions
5.7 t/year
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Closest school
0.2 km

Daytime· 07:00 – 23:00
44.1dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Fuel source changed
Hot water system upgraded
High performance glazing installed
Wall insulation upgraded
Loft insulation installed or upgraded to 250mm+
Floor insulation added or improved
More low energy lighting installed
T.1 Robinia - Fell to ground level. T.2 Cherry- Fell to ground level self set adjacent to the brickwork. (approx 5CM from brick wall) T.3 Hawthorn - Fell to ground level. T.4 Maple - Crown reduce tree by 1M in height and spread. T.5 Robinia - Crown reduce tree by 1M in height and spread. T.6 Beech - Fell to ground level. T.7 Yew hedge - reduce height and trim sides by 1.5M. T.8 Laburnum - fell to ground level. T.9 Horse Chestnut - Fell to ground level. T.10 Holy - Fell to ground level. T.11 Cherry - Fell to ground level. T.12 Elder - Fell to ground level.
T1 Silver Birch fell T2 Hornbeam fell T3 Hornbeam fell T4 Conifer fell
16 November 2018Most recent
£790,000
+107.5%over 8 years26 March 2010
£380,750
Median price across the last 5 sales in SG8 0JD: £603,000 (2025–2022).

Street avg 8.5 t/year
Years Held
8 years
Street avg 12 years
SG8 0JX
Guilden Morden CofE Primary Academy. 2 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Night-time· 23:00 – 07:00
36.1dB