9 Broom Hill, Welwyn, AL6 0SF
About 9 Broom Hill
9 Broom Hill is a detached house in Welwyn (AL6 0SF). It has a recorded floor area of 181 m² (around 1948 sq ft), construction records dating it to 2019 and council tax band F. The latest certificate (May 2021) returns a high B (score 86), putting the home a stone's throw from an A rating. The recommended improvements would push it to A (score 92).
Today's modelled estimate of £901,000 sits 63.8% above the 2018 sale of £550,000. On a £-per-square-foot basis, the last sale (£282/sq ft) was about 19.4% above the typical sold price in the postcode. At 181 m² it's 23.1% larger than the typical home in the postcode (147 m² median across 5 EPCs). Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). 7 planning records sit against the property, 5 approved, 2 refused. Last sale on file: £550,000 in July 2018.
Know exactly what you're buying at 9 Broom Hill
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
EPC Rating
Planning history
9 Broom Hill has been through 5 approved planning applications — a well-evolved property.
- Mar 2020ConditionsIn report
Variation of conditions 10 (drawing numbers) on application 6/2019/0771/FULL
- Reference
- 6/2020/0252/VAR
- Jan 2020ConditionsIn report
Submission of details pursuant to condition 3 (surface water drainage scheme) and 5 (protection from railway line noise) on planning permission 6/2019/0771/FULL
- Reference
- 6/2019/3217/COND
We flagged 1 thing worth checking at 9 Broom Hill
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
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Sales history & valuation
9 Broom Hill valuation sits well clear of the typical sold price in this postcode.
£901,000
Modelled from EPC, postcode comparables.
£550,000
Recorded with HM Land Registry.
Sales timeline
8 July 2018Most recent
£550,000
Median price across the last 5 sales in AL6 0SF: £330,000 (2021–2002).
Everything we know about 9 Broom Hill, 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 Broom Hill homes
9 Broom Hill outperforms the street on epc rating by a wide margin.
EPC Rating
86 (B)
Street avg 66 (D)
Floor Area
181 m²
Street avg 152 m²
CO₂ Emissions
2.2 t/year
Street avg 5.4 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.5 km
Mardley Avenue — bus stop.
Closest school
0.9 km
St Michael's Woolmer Green CofE VA Primary School. 6 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.