21 Brook Lane, Towcester, NN12 6YL
About 21 Brook Lane
21 Brook Lane is a detached house in Towcester (NN12 6YL). It has a recorded floor area of 161 m² (around 1733 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (August 2016) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 81), a 3-band jump.
Held since July 2003 — that's 23 years off the open market, well above the local norm. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1995–2003, sale prices on this property compounded at 9.3% per year. Today's modelled estimate of £563,000 sits 125.2% above the 2003 sale of £250,000. On a £-per-square-foot basis, the last sale (£144/sq ft) was about 32.3% below the postcode norm.
Know exactly what you're buying at 21 Brook Lane
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
Energy performance
21 Brook Lane sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Planning history
21 Brook Lane has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at 21 Brook Lane
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
Sale price has at least doubled since 1995.
£563,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.3% per year over 8 years.
£250,000
Growth on file: 9.3% per year over 8 years.
Sales timeline
31 July 2003Most recent
£250,000
+5.0%over 1 year18 April 2002
£238,000
+90.5%over 6 years19 October 1995
£124,950
Median price across the last 5 sales in NN12 6YL: £525,000 (2024–2019).
Everything we know about 21 Brook Lane, 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 Brook Lane homes
On price per m², 21 Brook Lane runs well behind the street norm.
Price per m²
£1,553
Street avg £3,185
Floor Area
161 m²
Street avg 153 m²
Habitable Rooms
8 rooms
Street avg 8 rooms
CO₂ Emissions
9.2 t/year
Street avg 6.1 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Cemetery — bus stop.
Closest school
0.6 km
Sponne School. 5 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
51.9dB

Night-time· 23:00 – 07:00
42.0dB