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According to the public record, 9, Swangleys Lane, Knebworth is a period freehold house with 2,389 ft2 of internal area and sits on a 1,233 m2 plot.
Houses of this size in this area normally have 5 bedrooms with a garden.
Based on available information, and assuming reasonable condition, the estimated sale value for 9, Swangleys Lane, Knebworth is £1,042,676 and the estimated rental value is £2,988 per month.
Swangleys Lane, Knebworth, SG3 is located in the borough of North Hertfordshire within the SG3 postal district.
9, Swangleys Lane, Knebworth has 2 entries in the Land Registry , most recently in July 2025 and a single entry in the EPC database dated August 2024.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 9, Swangleys Lane, Knebworth is in very good condition we estimate a sale value of £1,094,810 and a rental value of £3,137 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £969,688 and a rental value of £2,779 per month.
Over the last 12 months the sale value of 9 Swangleys Lane Knebworth has decreased by an estimated £20,727 (2.0%) and its rental value has increased by an estimated £105 per month (3.5%), giving an expected gross yield of 3.4%.
According to data from HM Land Registry, 9, Swangleys Lane, Knebworth sits on a plot of 1233m2.
We have plot size data on 14 out of 18 other houses in the postcode and 9, Swangleys Lane, Knebworth sits on the 5th largest plot.
9, Swangleys Lane, Knebworth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 08 Aug 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
According to HM Land Registry, 9, Swangleys Lane, Knebworth was last sold on 10th July 2025 for £1,265,000 and was recorded as a freehold house.
The property has had 2 sales since 1995.
Since July 2025, the market for similar properties has risen 5.8%
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 9, Swangleys Lane, Knebworth within a radius of 990 metres over the last 2 years.
The most recent example is 12, Stevenage Road, Knebworth, SG3 6AW, a freehold house which sold for £920,000 on the 4th August 2025.
Read more about house prices in SG3.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Swangleys Lane, Knebworth, SG3 has a total of 23 addresses. According to our analysis of all the public data, 9, Swangleys Lane, Knebworth is the 7th largest and the 7th most expensive property on the street.
When compared to the postcode district it is £508k more expensive than the average property in SG3.
The closest station to 9, Swangleys Lane, Knebworth is Knebworth station which is 600 metres away.
According to recent data from Ofcom, ultrafast broadband is available in this area.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
The recent census recorded whether a resident owned or rented their home.
In the area around 9, Swangleys Lane, Knebworth, 53.7% of property is privately owned outright and 28.6% is privately owned with a mortgage.
The graph below shows how this compares to East of England and the rest of England & Wales.
The recent census recorded the highest level of education achieved by residents in the local area.
In the area around 9, Swangleys Lane, Knebworth, 14.6% of residents are recorded as possessing school level qualifications and 55.4% as possessing degree level qualifications.
The graph below shows how this compares to East of England and the rest of England & Wales.
The most recent census in 2021 recorded the age of all UK residents.
In the area around 9, Swangleys Lane, Knebworth, the average age was 43.9 and the most common age was 57.
The graph below shows how this compares to East of England and the rest of England & Wales
The recent census recorded whether a property was a primary or secondary home for the resident.
In the area around 9, Swangleys Lane, Knebworth, 2.0% of property was a second home.
Comparison figures for East of England and the rest of England & Wales are listed below.
The recent census recorded the number of cars registered in each household.
In the area around 9, Swangleys Lane, Knebworth, there are an average of 1.4 cars per household.
See below for how this compares to East of England and the rest of England & Wales.
