The Colonnades project, a comprehensive redevelopment for Samuel Properties Ltd of a three-acre site at Porchester Square, London between 1974-1976. The brief was to create a high-density redevelopment of the site prioritising residential accommodation, with limited shopping and commercial use. The resulting proposals consisted of 243 houses, flats and maisonettes, a supermarket, eight shops, offices, a pub and an underground carpark. The Colonnades project was also associated with the development of Paddington Library for the City of Westminster.

The scheme was notable for incorporating much of the existing terraces which bounded the site and knitting together new urban design features with building conservation principles. Buildings at 36-46 Porchester Square were retained and new buildings were staggered to follow the line of the street. New units at the sides of the scheme were limited in height to avoid overshadowing, and allowed natural light through to the central square. The new block in Porchester Terrace North was staggered to follow the line of the street and limited in height to reflect the scale of the adjoining properties. To make use of the large flat roofs covering the library and commercial areas, a new house type was developed in the form of a series of narrow patio houses entered from landscaped walkways. Existing houses were also linked at ground level by an indoor pedestrian street.

Drawing references for this project are divided between phases 01 and 02, with the building they refer to included at the end of the reference (P1/C/ME/PQL).