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New builds in SG18: what they really sell for.

6 new-build homes sold in SG18 in the last 12 months, 1% of all sales. New detached homes sold for a median £598,750, 21.7% more than existing ones.

Biggleswade, covering Biggleswade East, Biggleswade West, Clifton, Henlow & Langford, Northill, Potton, Stotfold, Astwick, Dunton.

New homes sold

6

1% of sales, last 12 months

New-build premium

+21.7%

Detached homes

Resold, vs market

+12.9%

Market +11.7%

Energy bills

~£679/yr

13% have solar

Developments

Where new homes have sold

New streets with three or more new-build sales in the last two years. Price per m² uses floor areas from each home's energy certificate.

Walnut Avenue, LangfordSG18 9GT · detached, semi-detached · 3 sold · latest Jul 2026
£475k–£563k£4,472/m²
Harvest Meadow, DuntonSG18 8AN · detached, semi-detached · 4 sold · latest Dec 2025
£405k–£850k£3,935/m²
Hornbeam Lane, LangfordSG18 9GR · detached, semi-detached, terraced · 15 sold · latest Oct 2025
£410k–£665k£4,324/m²
Hollyhock WaySG18 8YQ · semi-detached, flat · 13 sold · latest Mar 2025
£238k–£435k£3,391/m²
Goodwin Field, NorthillSG18 9GL · detached · 4 sold · latest Mar 2025
£500k–£595k£3,031/m²
Sycamore Gardens, LangfordSG18 9GS · detached, terraced · 5 sold · latest Feb 2025
£342k–£640k£4,277/m²
Daffodil DriveSG18 8YU · detached, semi-detached · 14 sold · latest Dec 2024
£373k–£660k£3,956/m²

The premium

New against existing homes

Median sold prices over the last two years. New homes are often a different size, so this is a guide rather than a like-for-like comparison.

Detached

+21.7%

New £599k · existing £492k

28 new-build sales

Semi-detached

+14.3%

New £428k · existing £375k

18 new-build sales

Terraced

+28.3%

New £385k · existing £300k

6 new-build sales

Flat

+22.5%

New £245k · existing £200k

11 new-build sales

Resale

Do new builds in SG18 hold their value?

Bought new, resold

+12.9%

Local market, same years

+11.7%

Kept pace

234 of 421

Typically held 4.6 years

Homes in SG18 that Land Registry records as bought new and later resold, against the UK house price index for the same type of home and years. Shared-ownership first sales are left out.

Running costs

What new homes here cost to run

Energy bills

~£679/yr

Typical 105 m² home

Typical rating

EPC B

Solar panels

13%

of homes

Heat pumps

0%

of homes

From the energy certificates of 40 recently built homes. Certificate costs use standard assumptions, so compare them rather than budget on them. A typical older D-rated home costs nearer £1,800 a year.

HM Land Registry price paid data, standard sales only, to September 2026. New homes appear once their sale is registered, usually a few weeks after completion.

Questions

How much more do new builds cost in SG18?

Over the last two years, new detached homes in SG18 sold for a median £598,750 against £492,000 for existing ones, a difference of +21.7%. New homes are often a different size or spec, so compare price per square metre for a specific plot.

Do new builds in SG18 hold their value?

421 homes in SG18 bought new and later resold changed by a median +12.9%, typically after 4.6 years. The local market moved +11.7% over the same periods, so new homes here have broadly kept pace.

Which new developments are selling in SG18?

Recent new-build sales recorded by Land Registry in SG18 include Walnut Avenue, Langford, Harvest Meadow, Dunton, Hornbeam Lane, Langford, Hollyhock Way, Goodwin Field, Northill. New streets appear once the first homes complete.

How do I know if a new build in SG18 is fairly priced?

Compare the asking price per square metre with plots already sold on the development, allow for the new-build premium, and negotiate extras as well as price. Proptel's new-build check does this for one plot for £9.99, with the extras to ask for and a letter for the sales office.

© 2026 Proptel · Property data for buyers