46 Heydon Road is a five-bedroom detached house in Great Chishill, Royston, Royston (SG8 8SR). It has a recorded floor area of 260 m² (around 2799 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (August 2012) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 82). Main heating runs on oil. The latest certificate is from August 2012, so improvements made since then won't be reflected. Other recorded features include attached land beyond the plot.
Sale prices here have outpaced England HPI: 9% per year against 0% for the wider region. Today's modelled estimate of £1,017,000 sits 54.1% above the 2013 sale of £660,000. On a £-per-square-foot basis, the last sale (£236/sq ft) was about 15.9% below the postcode norm. At 260 m² the property is well over the postcode median (124 m² across 22 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 82% of similar EPCs). Last sold in April 2013, so it's been off the market for around 13 years. 4 planning records sit against the property, 2 approved, 0 refused.
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
46 Heydon Road's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 20 Aug 2022
2: Sycamore Maple - Crown reduce by 3m 3: Cherry - Crown reduce by 2m 4: Ash - Reduce height by 1m, crown reduce by 5m 5: Ash - Reduce height by 2m, crown reduce by 5m 6: Silver Birch - Crown reduce by 5m 7: Cherry - Crown reduce by 5m 8: Hawthorn - Reduce height by 3m, crown reduce by 3m
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46 Heydon Road has more than quadrupled in price since its earliest registered sale in 1995.
£1,017,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.0% per year over 18 years.
£660,000
Growth on file: 9.0% per year over 18 years.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
46 Heydon Road outperforms the street on floor area by a wide margin.
Price per m²
£2,538
Street avg £3,590
Floor Area
260 m²
Street avg 130 m²
Habitable Rooms
9 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.
Nearest stop
1.9 km

Daytime· 07:00 – 23:00
44.3dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Using Billy from Top Tree Fellas. ..Front of House. .Tree T1 Sycamore Maple needs felling to ground and stump ground as it has died it had no leaves in 2019 with fewer leaves each year since 2015 and bark is falling off. When it was worked on in 2015 it was discovered that the trunk was split and unfortunatley it has not recovered though we did try to revive it. Worried it will fall over into next door's house. We proposed to plant a replacement sycamore maple in its place. .Tree 2. Sycamore Maple needs crown reducing by 2.5m not done for 5 years. .Tree 3. Cherry Tree needs crown reducing by 1m not done for 5 years. .Tree 4. Ash Tree needs crown reducing by 2.5m not done for 5 years. .Tree 5. Ash Tree needs crown reducing by 2.5m and a 4m reduction off height not done for 5 years. This is a large tree within 10 meters of our house it is very precarious in high winds I proposed reducing the height to equal the smaller ash tree next to it. ..Rear of House .Tree 6. Silver Birch needs crown reducing by 2.5m not done for 5 years. .Tree 7. Cherry Tree needs crown reducing by 2.5m not done for years. .Tree 8. Hawthorn needs crown reducing by 2m. It has never been reshaped as we left it in 2015 and is getting rather large and is close to the house.
4 April 2013Most recent
£660,000
+55.3%over 7 years24 June 2005
£425,000
+190.1%over 9 years13 September 1995
£146,500
Median price across the last 5 sales in SG8 8SR: £730,000 (2025–2021).

Street avg 6 rooms
CO₂ Emissions
8.7 t/year
Street avg 5.9 t/year
SG8 8DZ
School — bus stop.
Closest school
1.9 km
Chrishall Holy Trinity and St Nicholas CofE (Aided) Primary School and Pre-School. 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
37.1dB