Loft Conversion Design – Horizon Architecture

Make room upstairs without losing your garden

An extra bedroom, a quiet workspace or a bathroom can make your home work better. We design London loft conversions that make practical use of the roof space while considering the rooms and circulation below.

We start with the existing roof, available headroom and where the stairs could go. Then we explore the layout, natural light and the appropriate planning route for your property.

The technical stage brings together structure, stairs, insulation and fire-safety design, with specialist input where required. We explain the drawings and consultant information needed at each stage, with clear fees and a programme for our work.

Share your address, roof photographs and any existing plans to discuss what your loft could become.



Free homeowner guide

Free Loft Conversion Guide 2026

A practical checklist covering feasibility, planning and Building Regulations.

Get the guide

Horizon Architecture Ltd

With over 25 years of experience, Horizon Architecture brings together architectural design, interiors and technical coordination. We work with you to understand the property, compare options and develop the information each stage needs. Clear fees, fast responses and an agreed programme keep you informed as your project moves forward.

  • Over 25 Years

    of Experience

  • more than 50

    Projects completed

Loft Conversion Design – Horizon Architecture
Loft Conversion Design – Horizon Architecture Loft Conversion Design – Horizon Architecture Loft Conversion Design – Horizon Architecture


Plan your budget

How much could your project cost?

Use our free construction cost calculator to check a rough estimate of how much your extension, loft conversion, refurbishment or new-build project could cost. It is an early budgeting guide rather than a contractor quotation.

Horizon Architecture home
Go Back Top