11a, Birch Grove, Welwyn, AL6 0QP
About 11a
11a is a three-bedroom semi-detached house in Welwyn (AL6 0QP). It has a recorded floor area of 115 m² (around 1238 sq ft), construction records dating it to 1976-1982 and council tax band E. The latest certificate (October 2019) shows a C (score 72). When first surveyed in January 2010 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Poor to Very Good and main heating went from Average to Good; while roof efficiency dropped from Average to Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85).
Across 1999–2014, sale prices on this property compounded at 6.5% per year. Today's modelled estimate of £598,000 sits 79.8% above the 2014 sale of £332,500. On a £-per-square-foot basis, the last sale (£269/sq ft) was about 21.6% below the postcode norm. 12 years since the last transfer (February 2014). Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: an extension approved in 2014. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 11a
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
- Open-plan layoutYes
Outside
- GarageYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
More low energy lighting installed
Wall insulation upgraded
Low energy lighting percentage decreased
More low energy lighting installed
Planning history
11a has an approved single-storey rear extension on the planning record.
- May 2014ExtensionOutlineIn report
Extension: Single storey · Rear of property
Certificate of lawfulness for the proposed erection of single storey rear extension
- Documents
- 6 docs on file
- Reference
- N6/2014/0521/LUP
We flagged 1 thing worth checking at 11a
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 1999.
£598,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.5% per year over 15 years.
£332,500
Growth on file: 6.5% per year over 15 years.
Sales timeline
7 February 2014Most recent
£332,500
+16.7%over 3 years22 July 2010
£285,000
+18.8%over 6 years19 December 2003
£240,000
+82.5%over 4 years16 June 1999
£131,500
Median price across the last 5 sales in AL6 0QP: £670,000 (2025–2023).
Everything we know about 11a, 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 Birch Grove homes
11a outperforms the street on epc rating by a wide margin.
Price per m²
£2,891
Street avg £4,186
Floor Area
115 m²
Street avg 132 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
3.6 t/year
Street avg 5.3 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
The North Star PH — bus stop.
Closest school
0.3 km
Oaklands Primary School. 9 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.