Self build project cost

How much does it cost to build a house?

We asked self build experts to find out the estimated cost of different types of self build homes

By Jenny Mcfarlane |

We asked self build experts to give us an average calculation of different self build house types so you know how much building a house actually costs in 2019.

For a guide on how much it costs to build a new home, take a look at Nottingham-based practice Julian Owen Associates Architects’ build cost table, based on experience rather than the theoretical calculations used by quantity surveyors.

*All sizes are approximate for typical self build houses. Build cost per sqm multiplied by typical floor area.

Very small bungalow

  • Floor area: 70 sqm
  • Budget: £87,500
  • Average: £105,000
  • Good: £122,500
  • High quality: £140,000
  • Very high quality: £175,000
exterior of bungalow size house in new forest by PAD studio architects

Photo: PAD Studio

Small 3-bed semi

  • Floor area: 85 sqm
  • Budget: £106,250
  • Average: £127,500
  • Good: £148,750
  • High quality: £170,000
  • Very high quality: £212,500
2 of a Kind self build semi detached by Robert Dye and Laura Murdock

Photo: Jefferson Smith

Medium 3-bed

  • Floor area: 115 sqm
  • Budget: £143,750
  • Average: £172,500
  • Good: £201,250
  • High quality: £230,000
  • Very high quality: £287,500
Photo: Darren Chung

Photo: Darren Chung

Average 4 bed

  • Floor area: 140 sqm
  • Budget: £175,000
  • Average: £210,000
  • Good: £245,000
  • High quality: £280,000
  • Very high quality: £350,000
exterior of norwich grand designs tv house by natasha cargill

Photo: Darren Chung

Good sized 4-bed/small 5-bed

  • Floor area: 180 sqm
  • Budget: £200,000
  • Average: £240,000
  • Good: £280,000
  • High quality: £320,000
  • Very high quality: £400,000
average 4 bed self build house: exterior of wedge house owned by melanie and john robinson

Photo: Mel Yates

Average 5-bed

  • Floor area: 180 sqm
  • Budget: £225,000
  • Average: £270,000
  • Good: £315,000
  • High quality: £360,000
  • Very high quality: £450,000
The exterior of award winning Grand Designs TV house in Lewes East Sussex on River Ouse, photo by Matt Chisnall

Photo: Matt Chisnall

Large 5-bed

  • Floor area: 200 sqm
  • Budget: £250,000
  • Average: £300,000
  • Good: £350,000
  • High quality: £400,000
  • Very high quality: £500,000
'Mothership' Grand Designs TV self build house owned by Martin Walker

Photo: Jefferson Smith

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