The site presented some difficulties. It slopes steeply to the west. There was a covenant on the rear of the site that prohibited building and local council regulations stipulated that the building height on the road end should not exceed 65 feet. Tecton explored a number of different plans and evaluated them against a checklist of requirements: economic needs; height; privacy; views; orientation and circulation. The chosen plan was a double cruciform, aligned perpendicular to the street. Entrance is made at the road end through a curving porte-cochère. Highpoint One incorporated many innovative features and was technically advanced for the time.

The engineer, Ove Arup, persuaded the Borough surveyor to waive the conventional regulations that would have required an internally obtrusive frame of columns and beams. Instead, he used a monolithic panel and slab technique, whereby the exterior walls are treated as monolithically combined stanchions and beams - the “eggshell” structure. This continuity allowed the thickness of the walls to be reduced and gave an almost unobstructed floor area. Other innovations included ceiling hot water radiant panels, built-in refrigerators that had a central condenser in the basement, a separate system of small service lifts, folding windows that slide to one side of the opening, carefully designed kitchens and bathrooms and built-in wardrobes that fit beneath the spine beam supporting the middle of the slab. Lubetkin's design also includes several communal facilities, such as a rooftop terrace and gardens, which promote a sense of community among residents. This focus on shared spaces was groundbreaking in the early 20th century, as it encouraged social interaction and fostered a sense of belonging. The integration of nature within the architectural framework reflects Lubetkin's belief in the importance of green spaces for urban living, a principle that remains relevant today.