Build cost estimator

300713PL103 In NI, here’s a one storey detached bungalow, certified PassivHaus, built to a standard spec finish, costing approximately £67 per sqft (€870 per sqm). Supplied by builders Moffitt & Robinson, 40 Blacksessiagh Road, Omagh, County Tyrone, BT78 1SU, tel. 82243656 Mobile 07803 189303,


House size: 186 sqm / 2,002 sqft External walls: U-value 0.125W/sqmK; timber frame construction, insulated with 340mm of fibreglass insulation with airtightness membrane, OSB sheeting, plasterboard finish inside, brick and cement render on the outside. Floor: U-value 0.13W/sqmK; build up of 25mm polystyrene, 150mm polyurethane, 75mm concrete floor, 4mm acoustic underlay, 10mm laminated floor. Roof: U-value 0.067 W/sqmK; insulated with 600mm of fibreglass with airtightness membrane and plasterboard finish. Windows: Triple glazed, argon filled, uPVC, total U-value (frame and glazing): 0.8W/sqmK, G-value: 0.55 Solar panels (hot water): Vacuum tube collectors, 30 in total, collector area 3.24 sqm Heat recovery ventilation (hrv): 90% efficient


  • Professional fees £1,120
  • Foundations, rising walls and structural floor slab £9,046
  • Blockwork and superstructure £12,691
  • Roof construction & covering £21,250
  • Airtightness £3,080
  • Windows & doors £6,860
  • Fascia & soffit (uPVC) & rainwater goods £1,200
  • First fix electrics £2,500
  • PV panels £12,800
  • Solar panels (hot water) £2,400
  • Insulation to floor, walls and roof £9,800
  • Floor screed £1,800
  • Plastering (internal and external) £5,906
  • Stone cladding £941
  • Second fix electrics £2,600
  • Plumbing & HRV £6,100
  • Wood flooring and tiling and vinyl £4,166
  • Kitchen and utility fit out £4,600
  • Sanitaryware for bathrooms £2,774
  • Painting and decorating £1,605
  • Civil works/external drainage (septic tank) £5,385
  • Landscaping £8,500
  • Roller Doors £1,120
  • Stove £3,300
  • Internal Joinery work £4,381

Total £135,925

What do you think?

-8 points
Upvote Downvote

Written by Astrid Madsen

Astrid Madsen is the editor of SelfBuild & Improve Your Home magazine. She previously held the same role in an Irish trade publication, before that she worked at the National Standards Authority of Ireland. She graduated with a BA in Urban Studies from Columbia University in New York and holds an MBA from the Instituto de Estudios Bursatiles in Madrid. France of origin, she now lives in Portarlington, County Laois, where she's taken on the task of renovating a listed building! Email

ROI Register of builders

In it for the long run