A loft conversion is one of the most effective ways to add value, space, and comfort to your London home. By transforming an unused loft space into a bright, functional living area, you can unlock the full potential of your property – whether you’re looking to add a bedroom, home office, or private suite.
At Armstrong Simmonds Architects, we specialise in bespoke loft conversions tailored to the unique architecture of London’s residential properties. As a RIBA Chartered architect studio, we guide you through the entire process; from feasibility and planning to design, detailing, and construction oversight.


A successful loft conversion requires more than just floorplans and building work – it needs architectural thinking. We approach every project with a deep understanding of space, light, structure, and context.
Our service includes:
We deliver loft conversions that look and feel like a natural extension of your home, not an afterthought.
Our design team also takes into account the property’s original features, such as chimneys, dormer constraints, or roofline variations. We consider head height, fire regulations, stair placement, and daylight orientation, ensuring every detail is thought through from the start.
We combine creative thinking with technical expertise to guide you through every stage of your project from concept to completion. The process typically includes the following key phases:
