21 Calder Green, Northampton, NN5 7JB
About 21 Calder Green
21 Calder Green is a three-bedroom end-of-terrace house in Northampton (NN5 7JB). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (January 2026) shows a C (score 71). When first surveyed in August 2014 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good and hot-water efficiency went from Poor to Good; while window efficiency dropped from Good to Average and lighting dropped from Very Good to Good. This certificate was lodged in the last six months, so the rating reflects current condition. Other recorded features include outbuildings. The home occupies a corner plot.
Across 2007–2016, sale prices on this property compounded at 3% per year. Today's modelled estimate of £229,000 sits 52.7% above the 2016 sale of £149,950. On a £-per-square-foot basis, the last sale (£162/sq ft) was about 46.1% above the typical sold price in the postcode. On the market in February 2016 and unlisted since — roughly 10 years.
Know exactly what you're buying at 21 Calder Green
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
- Bedrooms3
- Bathrooms1
- Dining roomYes
- Utility roomYes
Outside
- OutbuildingsYes
- Corner plotYes
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Cavity wall insulation installed
Roof insulation improved
Low energy lighting percentage decreased
More low energy lighting installed
Planning history
21 Calder Green has no planning applications on record.
Notable planning nearby
10applications of note in the surrounding area
We flagged 2 things worth checking at 21 Calder Green
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
21 Calder Green saw 3 transfers in just over a decade — high turnover for the postcode.
£229,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.0% per year over 9 years.
£149,950
Growth on file: 3.0% per year over 9 years.
Sales timeline
12 February 2016Most recent
£149,950
+30.4%over 2 years17 January 2014
£114,950
-0.9%over 6 years7 June 2007
£116,000
Median price across the last 5 sales in NN5 7JB: £177,500 (2022–2017).
Nearby sales in NN5 7JB
Everything we know about 21 Calder Green, 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 Calder Green homes
CO₂ Emissions for 21 Calder Green runs comfortably ahead of the street norm.
Price per m²
£1,744
Street avg £1,711
Floor Area
86 m²
Street avg 87 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.4 t/year
Street avg 3.3 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Woodside Walk — bus stop.
Closest school
0.3 km
St Mary's Catholic Primary School. 25 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
47.7dB
Night-time· 23:00 – 07:00
38.3dB