12 Church Street is a five-bedroom detached house in Guilden Morden, Royston, Royston (SG8 0JD). It has a recorded floor area of 209 m² (around 2250 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (September 2020) shows an F (score 25), near the bottom of the EPC scale. Main heating runs on electricity. Records show the property has been extended at some point in its history.
At 209 m² the property is well over the postcode median (111 m² across 28 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). 2 planning records sit against the property, 1 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. Today's modelled estimate of £690,000 is 11.3% above the 2020 sale price. Most recent transfer: December 2020 at £620,000.
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
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12 Church Street's carbon output runs well above what efficient homes in the postcode produce.
Planning history at 12 Church Street is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
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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The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£690,000
Modelled from EPC, postcode comparables.
£620,000
Recorded with HM Land Registry.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
12 Church Street is notably below the street on epc rating.
Price per m²
£2,967
Street avg £4,297
Floor Area
209 m²
Street avg 130 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
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
T1 Sycamore - Reduce crown by 3m. Recent storms have torn off a large lateral branch. We would like to reduce to prevent further damage.
T1 Chestnut - reduce crown by 25-30% approx. 2.5m, lift canopy to 4m. T2 Sycamore - reduce crown by 25-30% approx. 3m, lift canopy to 4m.
17 December 2020Most recent
£620,000
Median price across the last 5 sales in SG8 0JD: £603,000 (2025–2022).

CO₂ Emissions
14.0 t/year
Street avg 8.2 t/year
SG8 0PT
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