Loft Conversion Design Services
An Extra Floor Without Extending the Footprint. Sussex & Surrey.
Why Sussex Homeowners Trust ArchEvolve With Loft Conversions
- 15 years of experience
- 350 planning approvals secured
- 500 projects completed
- Revit 3D modelling as standard
- MCIAT-chartered accreditation
Loft Conversions Alongside Related Services
A loft conversion is often the first step in a wider transformation. Many clients combine it with a full house refurbishment or new interior design scheme so the new floor feels integrated with the rest of the home. For step-by-step guidance, read our definitive guide to attic transformations.
Loft Conversions: Where Headroom and Planning Collide
Common challenges
- Insufficient headroom once floor build-up is accounted for
- Staircases that eat into valuable first floor space
- Dormer designs that look disproportionate to the roof
- Roof structure loading missed until Building Regulations stage
- Confusion over permitted development limits for dormers
- Fire escape and means of access requirements overlooked
How ArchEvolve solves them
- Headroom calculated accurately from the structural survey stage
- Staircase positions tested in 3D before committing to a layout
- Dormer proportions designed to suit the existing roofline
- Structural loading assessed with an engineer at concept stage
- Fire safety and escape routes designed in from the outset
- Fire safety and escape routes designed in from the outset
How an ArchEvolve Project Works
Initial Consultation
Feasibility Assessment
Concept Design
Planning Application
Building Regulations
Construction Drawings
Construction Support
years of experience
Planning approvals
projects completed
largest construction project developed
Proudly Serving Homeowners Across Sussex and Surrey
A Different Standard of Design for Loft Conversions in Sussex and Surrey
3D Visualisations Included
Every loft conversion project is modelled in Revit and rendered in Enscape. You see accurate light, materials and spatial quality before a planning application goes in.
Faster Planning Submissions
Drawings produced in a coordinated 3D environment are more complete and less prone to officer queries, which keeps your loft conversion timeline on track.
Local Planning Knowledge
ArchEvolve has submitted loft conversion applications across West Sussex, East Sussex and Surrey planning authorities. Your submission is prepared for the specific council from day one.
End-to-End Service
From feasibility through to construction drawings, Alex Page manages every stage of your loft conversion project personally. No handoffs, no junior staff taking over mid-project.
Loft Conversion Design Across Sussex and Surrey
Many loft conversions fall under permitted development, subject to volume limits and restrictions on dormer positioning. Hip-to-gable conversions and those on designated land usually need full planning permission. Our planning permission guide for loft conversions explains the current thresholds.
Costs vary significantly by conversion type, from rooflight conversions to full dormer or hip-to-gable schemes. Our loft conversion cost breakdown sets out typical ranges for each type.
In most cases, yes, particularly when it adds a genuine extra bedroom with an en suite. Our article on whether a loft conversion adds value covers what makes the difference.
Building Regulations require a minimum head height over the staircase and a workable ceiling height in the main room, which varies with roof pitch and existing joist depth. ArchEvolve confirms whether your roof has sufficient headroom during the feasibility stage, before any design fees are committed.
ArchEvolve designs rooflight conversions, dormer conversions, hip-to-gable conversions and mansard conversions, matching the type to your roof structure, budget and planning constraints.
Staircase positioning is one of the most important early decisions, since it affects the layout of the floor below as well as the new loft space. ArchEvolve tests staircase options in 3D at concept design stage so you can see the impact before committing.
ArchEvolve covers West Sussex, East Sussex and Surrey, including Worthing, Horsham, Chichester, Crawley, Guildford and Brighton, with a free initial consultation offered throughout the region.
Frequently Asked Questions
Start Your Loft Conversion Design Today
