Kensington Court Gardens is a seven-story building with a floor above 18 meters, classifying it as a Higher Risk Building (HRB) under the Building Safety Act 2022. Consequently, Building Regulations approval was sought through the Building Safety Regulator (BSR), as stipulated in the Act. The project encompassed the refurbishment of an existing apartment, which included a complete internal strip-out, reconfiguration of the layout, replacement of windows, installation of new services, and the addition of new finishes, fittings, and bespoke joinery. Sketch Design provided technical support to the Interior Designer while serving as both the Architect and Principal Designer under Building Regulations. Our contributions included securing planning approval for the window replacement, coordinating the project, developing technical details, and preparing and submitting the Gateway 2 application to the Building Safety Regulator (BSR).