4a, Bell Lane, Byfield, Daventry, NN11 6US
About 4a
4a is a four-bedroom detached house in Byfield, Daventry, Daventry (NN11 6US). It has a recorded floor area of 238 m² (around 2562 sq ft), construction records dating it to 2007-2011 and council tax band G. The latest certificate (May 2023) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (November 2010); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 82).
At 238 m² the property is well over the postcode median (120 m² across 25 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 88% of similar EPCs). One planning record on file: an extension approved in 2011. Past consents include an extension, a porch and a conservatory, meaningful when judging how the property has evolved. Last sold in November 2012, so it's been off the market for around 14 years. Across 2009–2012, sale prices on this property compounded at 31.6% per year. Today's modelled estimate of £748,000 is 32.2% above the 2012 sale price.
Know exactly what you're buying at 4a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Bathrooms3
Outside
- Private gardenYes
- GarageDouble
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Floor insulation added or improved
Planning history
- Apr 2011PorchFullIn report
Extension: Rear of property
Construction of rear conservatory and porch extensions and installation of new first floor balcony
ExtensionConservatory- Documents
- 6 docs on file
- Reference
- DA/2011/0131
We flagged 1 thing worth checking at 4a
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
4a has more than doubled in price since the earliest registered sale in 2009.
£748,000
Modelled from EPC, postcode comparables and a sale-price growth of 31.6% per year over 4 years.
£566,000
Growth on file: 31.6% per year over 4 years.
Sales timeline
13 November 2012Most recent
£566,000
+183.0%over 3 years30 January 2009
£200,000
Median price across the last 5 sales in NN11 6US: £390,000 (2025–2021).
Nearby sales in NN11 6US
38 Bell Lane, Byfield, Daventry, NN11 6US
Sold Aug 2025
£390,00024 Bell Lane, Byfield, Daventry, NN11 6US
Sold Nov 2024
£295,00011 Bell Lane, Byfield, Daventry, NN11 6US
Sold Jul 2024
£343,50029 Bell Lane, Byfield, Daventry, NN11 6US
Sold Jun 2022
£400,00017 Bell Lane, Byfield, Daventry, NN11 6US
Sold Dec 2021
£430,000
Everything we know about 4a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Bell Lane homes
On epc rating, 4a stands well clear of the street.
Price per m²
£2,378
Street avg £2,959
Floor Area
238 m²
Street avg 129 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
5.8 t/year
Street avg 5.9 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Greenwood Close — bus stop.
Closest school
0.1 km
Byfield School. 2 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
48.3dB

Night-time· 23:00 – 07:00
39.2dB