12 Mount Keen, Stevenage, SG1 6BP
About 12 Mount Keen
12 Mount Keen is a six-bedroom detached house in Stevenage (SG1 6BP). It has a recorded floor area of 174 m² (around 1873 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (April 2016) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 82), a 2-band jump. The latest certificate is from April 2016, so improvements made since then won't be reflected. Other recorded features include a basement. Records show the property has been extended at some point in its history.
Across 2003–2017, sale prices on this property compounded at 3.3% per year. Today's modelled estimate of £653,000 is 26.8% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£275/sq ft) was about 29.3% above the typical sold price in the postcode. 9 years since the last transfer (May 2017). 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. One historical planning record sits against the property in 2022.
Know exactly what you're buying at 12 Mount Keen
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms6
- Bathrooms3
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- BasementYes
Outside
- GarageSingle, Integral
Building
- Previously extendedYes
Energy performance
12 Mount Keen's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 27 Apr 2026
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Apr 2022DemolitionFullIn report
Extension: Single storey · Rear of property
Single storey rear extension following demolition of existing conservatory
- Agent
- Mr Spencer Rose
Extension- Reference
- 22/00680/FPH
What's in 12 Mount Keen, Stevenage, SG1 6BP's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
12 Mount Keen valuation sits well clear of the typical sold price in this postcode.
£653,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 14 years.
£515,000
Growth on file: 3.3% per year over 14 years.
Sales timeline
11 May 2017Most recent
£515,000
+37.3%over 10 years27 February 2007
£375,000
+13.6%over 3 years18 September 2003
£330,000
Median price across the last 5 sales in SG1 6BP: £565,000 (2025–2020).
Everything we know about 12 Mount Keen, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?
Versus other Mount Keen homes
CO₂ Emissions for 12 Mount Keen lags the street by a wide margin.
Price per m²
£2,960
Street avg £2,748
Floor Area
174 m²
Street avg 148 m²
Habitable Rooms
8 rooms
Street avg 8 rooms
CO₂ Emissions
7.5 t/year
Street avg 5.1 t/year
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
20/mo
Rising year-on-year across the wider district.
Nearest stop
0.4 km
Fairfield Way — bus stop.
Closest school
0.8 km
Round Diamond Primary School. 13 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
43.8dB
Night-time· 23:00 – 07:00
36.0dB