Single Storey Extension Design Services
Ground Floor Space, Done Right. Sussex & Surrey.
Why Sussex Homeowners Trust ArchEvolve With Single Storey Extensions
- 15 years of experience
- 350 planning approvals secured
- 500 projects completed
- Revit 3D modelling as standard
- MCIAT-chartered accreditation
Single Storey Extensions Alongside Related Services
Single Storey Extensions: Getting Permitted Development Right
Common challenges
- Confusion over permitted development size limits
- Designs that create a dark, boxed-in kitchen or living space
- Roof and drainage details missed until construction
- Neighbour consultation scheme requirements overlooked
- Poor integration between old and new roof lines
- Quotes that do not include Building Regulations
How ArchEvolve solves them
- Permitted development assessed accurately before design starts
- Rooflights and glazing positioned for maximum natural light
- Roof and drainage detailing resolved at concept stage
- Neighbour consultation handled as part of the planning process
- Fixed-scope fees covering design through to Building Regulations
- Fixed-scope fees covering design through to Building Regulations
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 Single Storey Extensions in Sussex and Surrey
3D Visualisations Included
Every single storey extension 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 single storey extension timeline on track.
Local Planning Knowledge
ArchEvolve has submitted single storey extension 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 single storey extension project personally. No handoffs, no junior staff taking over mid-project.
Single Storey Extension Design Across Sussex and Surrey
Many single storey rear extensions fall under permitted development rights, subject to size limits that vary for detached, semi-detached and terraced properties. Side extensions and extensions on designated land, such as conservation areas, usually need full planning permission. ArchEvolve confirms your specific position at the free initial consultation.
Limits depend on your property type and whether a neighbour consultation scheme applies for larger single storey rear extensions. Our guide to how far you can extend without planning permission sets out the current thresholds in detail.
Costs depend on floor area, specification and groundworks. See our house extension cost guide for typical ranges, or get in touch for a fixed-scope design fee quote.
If the extension meets permitted development criteria, a full planning application is not required, although a Lawful Development Certificate is recommended to confirm this in writing. ArchEvolve prepares this alongside the design where appropriate.
The service covers feasibility and permitted development assessment, 3D concept design, planning or Lawful Development Certificate application, full Building Regulations drawings, and construction drawings for your builder.
This is one of the most common reasons for objections and refusals. ArchEvolve designs single storey extensions with roof pitch, window placement and boundary distances considered from the outset to minimise the risk of neighbour objections affecting your timeline.
ArchEvolve covers West Sussex, East Sussex and Surrey, including Worthing, Horsham, Chichester, Crawley, Guildford and Brighton, with a free initial consultation offered to all homeowners in the region.
Frequently Asked Questions
Start Your Single Storey Extension Design Today
