18 Lapstone House, Byfield Road, Northampton, NN5 5HF
About 18 Lapstone House
18 Lapstone House is a mid-terrace house in Northampton (NN5 5HF). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1967-1975 and council tax band A. At 46 m² this is the smallest unit on EPC record across the building (46–48 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (October 2014) shows a C (score 69), just inside the C band. When first surveyed in September 2011 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Average to Good and lighting went from Very Poor to Very Good. The latest certificate is from October 2014, so improvements made since then won't be reflected.
Know exactly what you're buying at 18 Lapstone House
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
18 Lapstone House's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 28 Oct 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Window efficiency improved
Low energy lighting percentage decreased
Wall insulation improved
Planning history
18 Lapstone House has no planning applications on record.
Notable planning nearby
15applications of note in the surrounding area
We flagged 2 things worth checking at 18 Lapstone House
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.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
18 Lapstone House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£119,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 4 sales in NN5 5HF: £53,000 (2016–2000).
Everything we know about 18 Lapstone House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Byfield Road homes
EPC Rating
69 (C)
Street avg 72 (C)
Floor Area
46 m²
Street avg 46 m²
CO₂ Emissions
1.9 t/year
Street avg 1.7 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Similar properties nearby
1 Lapstone House, Byfield Road
NN5 5HF
1 Lincoln House, Lincoln Road
NN5 5JS
1 Eyeletter House, Greenwood Road
NN5 5EG
1 Devonshire House, Alma Street
NN5 5LY
1 Caledonian House, Argyle Street
NN5 5JG
1 First Lane
NN5 5FD
1 Far End
NN5 5FN
1 Lincoln Road
NN5 5JS
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Bus Depot — bus stop.
Closest school
0.6 km
St James Church of England Primary School. 31 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
53.1dB

Night-time· 23:00 – 07:00
44.0dB