Stone bay window costs: repair, build and replacement prices

This page lists some of our costs and prices for restoring, repairing, building and replacing stone bay windows to the highest level of finish and craftsmanship.

We’re often asked: “How much does it cost to rebuild a stone bay window?” The answer is: Every bay window is different, so each project is priced individually. We’ve listed some specific examples on this page to give you a guide to the costs involved.

Contact us for your free bay window estimate
Stone bay window price guide
Pictured: Stone bay window price guide image

Victorian bay window replacement cost example

  • Bay window replacement, Hampton, London
  • We removed the existing bay window and then supplied and installed a new hand carved bay window to replicate their neighbour’s.
  • Recessed the internal gutter system into the top of the cornice and lead line. This meant that there was no need for any external guttering which does make for a much cleaner aesthetic.
  • We also built a new roof using welsh slate and full lead flashing and rolls.
  • Total: £17,550.00. + VAT
Victorian bay window hand carved by London Stonemasonry
Pictured: Victorian bay window hand carved by London Stonemasonry

Stone bay window partial rebuild cost example

  • We were able to rebuild this Victorian bay window, as we could save elements of the existing bay that hadn’t perished. Location: Finsbury, London.
  • The bay window sills to be replaced and the existing removed and disposed of. £3,640.00 + VAT.
  • Creation and installation of two carved, floral capitals. £4,210.00 + VAT.
  • All new jamb and mullion bases. £2,120.00 + VAT.
  • Creation and installation of two lintels. £2,310.00 + VAT.
  • Additional restoration to the stone elements of the bay that we were able to keep and reuse. £1,365.00 + VAT.
  • Total: £13,645.00. + VAT
Stone bay window partial rebuild
Pictured: Stone bay window partial rebuild, by London Stonemasonry

New, hand carved, Bath stone bay window price example

  • We removed the existing brickwork that formed the Victorian bay window elements and supplied and installed a new hand carved, Bath stone bay window to replicate their neighbour’s. Location: Wanstead, London.
  • We had to support the 1st floor brickwork and bay window and install the new bay window without disturbing the building above and having any movement.
  • We then had to rebuild the brickwork between the cornice of the new bay window and the sills of the 1st floor. This was to level the brickwork as it was out of level by 80mm over the length of the bay window. This had to be undertaken by removing 5-10 bricks at a time, and then reinstalling new bricks on the correct level. This was to ensure that there was structural stability at all points.
  • Total: £18,550.00. + VAT
New Bath stone bay window
Pictured: New Bath stone bay window by London Stonemasonry

Bay window section replacement price example

  • We replaced different sections of this Edwardian bay window in hand carved Bath stone. Our new stonework exactly replicated the sections of the bay window that had been damaged by steel beam during a rear extension to the house. Finchley, London.
  • Sections we hand carved and installed, include:
  • New mullions. £2,240.00 + VAT.
  • New capitals. £2,450.00 + VAT.
  • New lintels. £2,850.00 + VAT.
  • Brickwork above bay window carefully removed, rebuilt and colour matched to blend in with the surrounding bricks. £1,640.00 + VAT.
  • Total: £9,180.00 + VAT
Bay window section replacement
Pictured: Bay window section replacement by London Stonemasonry

Sill, mullions and brickwork replacement price example

  • We replaced the mullions, sills and all of the brickwork beneath this Edwardian bay window. Damage to the window had been caused by a car crashing into the front of the house.
  • We were able to support the lintels and then reuse the capitals and jambs.
  • All preparation work making the internal of the house secure prior to work commencing. £1,250.00 + VAT.
  • All temporary works supporting the lintels. £650.00 + VAT.
  • Replacing the mullions in Bath stone. £3,650.00 + VAT.
  • Replacement of the sills. £3,850.00 + VAT.
  • Brickwork and render externally and internally. £2,120.00 + VAT.
  • Total: £11,520.00 + VAT
Sill, mullions and brickwork replaced by London Stonemasonry
Pictured: Sill, mullions and brickwork replaced by London Stonemasonry

Get in touch for more information

Over the years we’ve worked on hundreds of bay windows across London. We offer the full package. Our skilled team decorates, repairs, replaces and restores stonework to the highest level of finish and craftsmanship. We work on stone windows from all periods, including: Victorian, Georgian and Edwardian. Costs vary due to many factors including; site access, raw materials and the complexity of the work required.

Contact us for your free bay window estimate