Area guides

›

SA4

› New builds

New builds in SA4: what they really sell for.

17 new-build homes sold in SA4 in the last 12 months, 3% of all sales. New detached homes sold for a median £350,000, 12.9% more than existing ones.

Swansea, covering Fairwood, Gorseinon and Penyrheol, Gowerton, Hendy, Llangennech, Llangyfelach, Llannon, Llwchwr.

New homes sold

17

3% of sales, last 12 months

New-build premium

+12.9%

Detached homes

Resold, vs market

+18.4%

Market +32.1%

Energy bills

~£482/yr

68% 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.

Fern Drive, PenllergaerSA4 9FS, SA4 9FT · detached, semi-detached · 34 sold · latest Feb 2026
£229k–£434k£3,416/m²
Cwm Y Lladron, GorseinonSA4 4HY, SA4 4HZ · detached, semi-detached, terraced · 24 sold · latest Oct 2025
£200k–£395k£3,125/m²
Golwg Gwynfaen, GorseinonSA4 4BA · detached, terraced · 3 sold · latest Sept 2025
£120k–£300k£2,293/m²
Thistle Street, PenllergaerSA4 9FR · detached, semi-detached · 7 sold · latest Jun 2025
£265k–£365k£3,405/m²
Golygfa Garn Goch, PenllergaerSA4 9HR · detached, semi-detached · 10 sold · latest May 2025
£263k–£525k£3,474/m²
Nant Gors-Fawr, GowertonSA4 3NE · semi-detached, terraced · 5 sold · latest Apr 2025
£108k–£250k£3,086/m²
Cilgant Meredith, PenllergaerSA4 9HS · detached, semi-detached · 7 sold · latest Apr 2025
£213k–£485k£3,135/m²
Golygfa Llysninni, PenllergaerSA4 9FW, SA4 9FZ · detached, semi-detached · 9 sold · latest Mar 2025
£225k–£408k£3,464/m²
Maes Cae Gwyn, PenllergaerSA4 9HQ · detached, semi-detached · 5 sold · latest Dec 2024
£306k–£455k£3,362/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

+12.9%

New £350k · existing £310k

63 new-build sales

Semi-detached

+44.1%

New £288k · existing £200k

42 new-build sales

Terraced

+50.0%

New £247k · existing £165k

8 new-build sales

Resale

Do new builds in SA4 hold their value?

Bought new, resold

+18.4%

Local market, same years

+32.1%

Kept pace

35 of 148

Typically held 4.3 years

Homes in SA4 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

~£482/yr

Typical 94 m² home

Typical rating

EPC B

Solar panels

68%

of homes

Heat pumps

5%

of homes

From the energy certificates of 59 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 SA4?

Over the last two years, new detached homes in SA4 sold for a median £350,000 against £310,000 for existing ones, a difference of +12.9%. New homes are often a different size or spec, so compare price per square metre for a specific plot.

Do new builds in SA4 hold their value?

148 homes in SA4 bought new and later resold changed by a median +18.4%, typically after 4.3 years. The local market moved +32.1% over the same periods, so buyers of new homes generally lost some of the new-build premium.

Which new developments are selling in SA4?

Recent new-build sales recorded by Land Registry in SA4 include Fern Drive, Penllergaer, Cwm Y Lladron, Gorseinon, Golwg Gwynfaen, Gorseinon, Thistle Street, Penllergaer, Golygfa Garn Goch, Penllergaer. New streets appear once the first homes complete.

How do I know if a new build in SA4 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