Self Build Design Services

Your Plot, Your Home, Designed From the Ground Up. Sussex & Surrey.

Why Sussex Self-Builders Trust ArchEvolve

A self build project starts with the plot, not the floor plan, and the two are easy to get wrong independently. ArchEvolve is MCIAT-chartered with 350 planning approvals secured across the region.
House extension under construction with skip and clipboard, illustrating hidden costs of a house extension homeowners need to budget for.
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Jonathan Gilbert
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I would highly recommend Alex and his company. He has amazing suggestions as well as taking into account our preferences and ideas too. He is easily accessible and has been so helpful in answering all our many questions! Looking forward to seeing our vision come to life!
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James Riley
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Alex was really helpful throughout the whole process. This was our first ever project like this and he was on hand to answer MANY questions!
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Nick Rutter
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Alex was so helpful from start to finish, great communication throughout. Would strongly recommend and will definitely use their services again in the future!
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arron tully
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Alex at Arch Evolve assisted with obtaining planning permission for a couple of extensions that we were intending on doing. Very professional and offered allot of very helpful advice. Very Happy Thank you.
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Marcus Eaton
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I have worked with Alex on many projects over the years and he has always been brilliant! Looking forward to working together again soon. Very professional and smooth process throughout the whole process.
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Charlotte Morley
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Archevolve has completed a number of plans for us due to changing my mind regularly. They have been consistently patient & listened to my requirements at all time. Alex has then been on hand for our builders if required. Fantastic company & highly recommended
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Peter Proto
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Used Alex for our large project, loft conversion, side garage and rear extension. Unbelievable service from start to finish. We are over the moon with the finish. Thank you so much!!
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Tony Maio
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Great service, they had an excellent understanding of my requirements. They applied great attention to detail, with a fast and very efficient service together very reasonable costs. I highly recommend this firm.

Self Build: Where Plot Potential Gets Missed

A self build project lives or dies on decisions made before a single drawing is produced: plot appraisal, orientation, access and planning strategy. Getting these wrong is far more costly to fix than a layout change later in the process.

Common challenges

How ArchEvolve solves them

How an ArchEvolve Project Works

Every project follows a clear, stage-by-stage process aligned with the RIBA Plan of Work framework.
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Initial Consultation
We discuss your brief, site and budget for your self build project, along with any planning constraints specific to your council. Free, no obligation.
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Feasibility Assessment
We assess planning viability and site constraints before any design fees are committed. This includes a full plot appraisal covering planning policy, access, services and site constraints.
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Concept Design
We develop the self build design in 3D and produce Enscape renders for your review before planning is prepared.
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Planning Application
We prepare and submit the full application to your local planning authority and manage it through to decision.
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Building Regulations
We produce the full Building Regulations package covering structure, thermal performance, drainage and fire safety. Self build projects require a complete Building Regulations package, which also supports self-build warranty and mortgage stage inspections.
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Construction Drawings
We deliver the complete technical drawing set your contractor needs to build your self build accurately on site.
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Construction Support
We remain available during the build to respond to queries and issue drawing updates where required.
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A Different Standard of Design for Self Build in Sussex and Surrey

Most practices in the region still work in 2D CAD. ArchEvolve designs self build projects in Revit and renders in Enscape, so you see the finished space before planning is submitted.
3D Visualisations Included

Every self build 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 self build timeline on track.

Local Planning Knowledge

ArchEvolve has submitted self build 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 self build project personally. No handoffs, no junior staff taking over mid-project.

Self Build Design Across Sussex and Surrey

ArchEvolve designs self build homes for individual plots throughout West Sussex, East Sussex and Surrey, from initial appraisal through to construction.

Yes, a new dwelling almost always requires full planning permission, and in some cases outline planning permission is sought first to establish principle before a detailed design is developed. ArchEvolve advises on the right strategy for your plot at the free initial consultation.

Yes, wherever possible. A plot appraisal assesses planning policy, access, services, orientation and site constraints before you commit to a purchase, which avoids buying a plot that cannot deliver the home you have in mind.

Design fees depend on the scale and complexity of the house and the planning route required. Our new build design cost guide sets out typical fee structures.

Yes, the full Building Regulations and construction drawing package produced by ArchEvolve supports the technical requirements of self-build mortgage lenders and structural warranty providers at each stage of the build.

A self build is designed for a single household on an individual plot, while our new build housing schemes service covers multi-unit developments, though the design and planning process shares many of the same fundamentals.

Yes, and many self-builders use the opportunity to specify higher levels of insulation, airtightness and renewable technology than standard new build regulations require. Our guide to eco-friendly home design covers the key principles.

ArchEvolve covers West Sussex, East Sussex and Surrey for site-based self build support, with 3D visualisation and design services available nationwide for plots further afield. Get in touch to discuss your specific location.

Frequently Asked Questions

Start Your Self Build Design Today

Free initial consultation for self-builders across Sussex and Surrey. Get in touch to discuss your plot.
Architect and homeowners reviewing plans outside a completed UK brick house extension with glazed roof and bifold doors, illustrating 2026 house extension costs and design options.

Our Latest Publications:

Single Storey vs Double Storey Extension: Pros & Cons
Wrap Around Extension Ideas and Costs: UK Guide
What Does an Architectural Designer Do? A Complete Guide to the Role, Skills and When to Hire One
What to Expect: First Architectural Designer Meeting
Does a House Extension Add Value to Your Property? A Practical UK Guide
Does a Loft Conversion Add Value to Your House? A UK Homeowner’s Complete ROI Guide
Hidden Costs of a House Extension in the UK: What Homeowners Need to Budget For
How Much Does a New Build House Cost to Design in the UK? A Complete 2026 Cost Guide 

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