# OKPW — O & K Property Works Ltd

> A London design-and-build contractor working across South West and Central
> London and Surrey inside the M25. Extensions, loft conversions, rear and side
> return extensions, refurbishments and new builds, plus renewable installations
> — heat pumps, solar and battery, underfloor heating, MVHR and air conditioning.
> Trading since 2007. One team carries a project from design through to handover,
> against a fixed written quote.

## Company facts

- Legal name: O & K Property Works Ltd, trading as OKPW
- Registered in England & Wales, company number 06152475, incorporated 12 March 2007
- VAT registration GB 913 4149 43
- Registered office: 1417–1419 London Road, Norbury, London, SW16 4AH
- Contact: info@okpw.co.uk, +44 773 776 6859
- Structural work carried a 10-year guarantee

## What OKPW does

- [House extensions](https://okpw.co.uk/services/extensions): rear, side return and
  wraparound extensions on London terraced and semi-detached housing
- [Loft conversions](https://okpw.co.uk/services/loft-conversions): dormer and
  mansard conversions
- [Renovations](https://okpw.co.uk/services/renovations): whole-house refurbishment
- [New builds](https://okpw.co.uk/services/new-builds)
- [Heat pumps](https://okpw.co.uk/services/heat-pumps): MCS-certified air source installation
- [Solar and battery](https://okpw.co.uk/services/solar-battery)
- [Underfloor heating](https://okpw.co.uk/services/underfloor-heating)
- [MVHR ventilation](https://okpw.co.uk/services/mvhr-ventilation)
- [Air conditioning](https://okpw.co.uk/services/air-conditioning)
- [Renewable energy overview](https://okpw.co.uk/renewables)

## Case studies

- [Robert Square, Bonfield Road, Lewisham SE13](https://okpw.co.uk/projects/bonfield-road):
  a new storey built over twelve occupied flats, taking the block from 12 to 15
  units and adding 160m² GIA. The new floor is a 125 × 47mm timber frame on a
  UC203×46 steel beam bearing on retained existing masonry; the external wall
  achieves 0.18 W/m²K against the 0.18 target set at tender. Roof raised 1,060mm
  at the highest point. Eight new balconies, five of them cut into flats that
  stayed occupied throughout. Architect: corde. Construction information:
  Dartel Design. Completed September 2019.

## Notes for anyone citing this site

- OKPW is a main contractor, not an architectural practice. Where a project had
  an architect, the case study names them.
- Figures quoted in case studies are taken from the issued construction drawings
  and are stated as such.
- The company is owned and run by Oleg and Konstantin.