Our Data Sources
21, Sylvandale, Welwyn Garden City has 21 entries in the Land Registry , most recently in March 2013 and a single entry in the EPC database dated September 2011.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 21, Sylvandale, Welwyn Garden City would be worth £596,889, with a potential rental value of £2,004 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £528,673, with a rental value of £1,775 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
21, Sylvandale, Welwyn Garden City occupies a 212 m2 plot as recorded by HM Land Registry.
All 28 other houses in this postcode have recorded plot sizes, and this one ranks as the 22nd largest.
Energy Efficiency
21, Sylvandale, Welwyn Garden City has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Sep 2011.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
21, Sylvandale, Welwyn Garden City last changed hands on 28th March 2013, selling for £310,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 36.1% since March 2013.
- Sold Mar 2013£310,000
- Sold Jun 2005£270,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 107 sales of comparable properties within 620 metres of 21, Sylvandale, Welwyn Garden City across the last 2 years.
Most recently, 17, The Shaws, Welwyn Garden City, AL7 2HR, a freehold house, sold at £570,000 on the 12th December 2025.
Read more about house prices in AL7.
- Sold Dec 2025£570,000 | 4 Bed House17, The Shaws, Welwyn Garden City, AL7 2HR17, The Shaws, Welwyn Garden City, AL7 2HR
- Sold Mar 2025£625,000 | 3 Bed House2, Hurst Close, Welwyn Garden City, AL7 2HX2, Hurst Close, Welwyn Garden City, AL7 2HX
- Sold Mar 2025£575,000 | 4 Bed House4, The Holt, Welwyn Garden City, AL7 2HU4, The Holt, Welwyn Garden City, AL7 2HU
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 21, Sylvandale, Welwyn Garden City as the 20th largest and the 31st most expensive of the 71 addresses on Sylvandale, Welwyn Garden City, AL7.
Against the AL7 postcode district average, it is £197k more expensive than the typical property.
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Schools Nearby
- Watchlytes Primary School700 m away
- Springmead Primary School1.0 km away
- Swallow Dell Primary and Nursery School1.3 km away
- Ridgeway Academy1.2 km away
- Stanborough School3.7 km away
- Monk's Walk School4.2 km away
More reading links
Public Transport Nearby
- Welwyn Garden City|2.7 km away
- Welwyn North|3.7 km away
- Hatfield (Herts)|4.8 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
