Key decorative elements include the ornate pine panelling, mouldings and cabinetry. The pine was treated with a caramel-coloured stain and tung oil, and then hand-waxed to create the desired patina. The balcony features round windows, with matching semicircular window seats.
"It's a very comfortable, masculine room, with colours that were inspired by the old, leather-bound books," says Watson. "Tones of burgundy, dark green and caramel are repeated in the fabrics and in the large Pakistani rug, which visually ties together the different patterns, creating a richly textured look.
Watson says the antique furniture and accessories, which include a large Parisian copper lantern in the centre of the room, add a glowing, reflective quality to the interior, in keeping with the era.
The library opens to a conservatory, also part of the new addition. Rather than cover the existing dark bricks on the house exterior, these were left exposed, and replicated in the new walls.
Watson says the brickwork, while distinctive, did create a heavy, ponderous look. To counter this effect, limestone floor tiles were introduced, along with large, Palladian-style windows with limestone trim, and a set of botanical fern prints.
"The owner loves gardening, so this is effectively a garden room hence the wicker furniture and the floral, green-and-white upholstery. It's a very English look, but one that's also typical of 1920s American conservatories."
The formal dining room is another room that opens to the conservatory. Although part of the original house, the room did not appear to have been used as a dining room, says Watson.