Architectural Feasibility Study Services

Know What Is Possible Before You Commit. Sussex, Surrey and UK-Wide.

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Why Clients Trust ArchEvolve With Their Feasibility Studies

A feasibility study is only useful if it gives you a straight answer. ArchEvolve is MCIAT-chartered and tests your idea against planning policy, site constraints and a realistic budget, then tells you plainly whether it is worth taking forward, and in what form.

      
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   Jonathan Gilbert 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.

Our services

Feasibility Studies and the Next Steps

Developers testing how many homes a site can hold should see our housing development feasibility studies, and anyone about to bid on land should start with a development site appraisal. Once an option is chosen, pre-application advice or a full planning application usually follows.

Completed rear extension at Oldfield Crescent

17 services · Sussex & Surrey

Residential

Extensions, conversions and whole-home projects for homeowners, with site visits across West Sussex, East Sussex and Surrey.

Extensions

House extensions Single storey extensions Double storey extensions Rear extensions Side return extensions Wrap around extensions Kitchen extensions Glass extensions

Conversions

Loft conversions Garage conversions Basement conversions Barn conversions

Whole home

House refurbishment Interior design Listed building design Self-build design Sustainable design

20 services · Nationwide

Developers & Commercial

Planning and technical design for developers and commercial clients across England.

Developer services

Design for developers Planning for developers Technical design for housing

Site & feasibility

Housing development feasibility Development site appraisals Residential masterplanning

Conversions

Commercial conversions Office to residential Flat conversions

Development types

New build schemes Residential developments Blocks of flats Infill housing Brownfield sites Affordable housing Mixed-use developments Care homes Student accommodation HMOs Rooftop developments

3D visualisation of a rear extension design

15 services · Homeowners and developers

Planning & Drawings

From the first feasibility check to construction drawings, in the order a project needs them.

01Feasibility & survey

Feasibility studies Measured building surveys Pre-application advice 3D visualisations

02Planning

Planning applications Planning drawings Permitted development Design and access statements Outline planning Reserved matters Discharge of conditions

03Technical & construction

Building regulations drawings Construction drawings Technical design for housing Contract administration

Architectural Feasibility Study Services: What They Tell You

Architectural feasibility study services answer one question before you spend money on full design: can this project work on this site, for this budget? Whether you are a homeowner weighing an extension against a move, or a developer considering a conversion or a small new build, we review planning policy and site constraints, model realistic options in 3D and give you a clear recommendation on the route worth pursuing.

Common challenges

Paying for full design before knowing the idea is viable
Not knowing which planning constraints apply to the property
Several possible layouts and no clear way to compare them
Build cost expectations that do not match the brief
Uncertainty over whether planning permission is needed at all
Lenders or partners asking for evidence before they commit

How ArchEvolve solves them

A focused early-stage study before any detailed design spend
Planning history, policy and designations checked at the outset
Two or three options modelled in 3D side by side
Floor areas and scope notes your builder can price against
Clear advice on permitted development versus a full application
Concise report with drawings and visuals you can share

How an ArchEvolve Project Works

Every feasibility study follows the same seven steps, from first conversation to a clear recommendation on whether and how to proceed.

Free Consultation

We discuss what you want to achieve, your budget and timescale, and agree exactly what the study needs to answer before any work begins.

Site and History

We check the planning history of the property or land, any previous refusals, and designations such as conservation areas, listed buildings and tree preservation orders.

Policy Check

We review the local plan and the council's design guidance to understand what is likely to be supported and where the planning risk sits.

Options in 3D

We model two or three design options in Revit, from a modest scheme to the most ambitious, so you can compare them clearly on screen.

Budget Sense-Check

We compare the floor area and complexity of each option against your budget and flag where costs are likely to climb, so expectations stay realistic.

Feasibility Report

You receive a short report with the options, Enscape visuals, constraints, risks and the planning route we recommend, written so it can be shared with lenders or partners.

Next Steps Agreed

We talk through the findings with you and, if the project is viable, agree whether to seek pre-application advice or move straight into planning drawings.

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Areas we cover

Feasibility Studies Across Sussex, Surrey and Beyond

Residential projects across West Sussex, East Sussex and Surrey, with site visits and local planning knowledge. Developer and commercial projects are delivered across England.

3Counties

14Towns

UKDevelopers

Town not listed? Ask us

West Sussex11 towns

Storrington Worthing Horsham Chichester Crawley Littlehampton Bognor Regis Burgess Hill Steyning Findon Hassocks

East Sussex2 towns

Brighton Eastbourne

Surrey1 town

Guildford

Developer or commercial project outside Sussex?

We work across England →

Seeing Every Option in 3D Before You Commit

Most feasibility work arrives as a few rough 2D sketches. ArchEvolve models each option in Revit and renders it in Enscape, so you can see the scale, light and layout of every scheme and make the decision with confidence.

Options You Can See

Each feasibility option is modelled in Revit and rendered in Enscape, so you compare real designs rather than abstract sketches before choosing a direction.

Answers Before Spend

The study identifies constraints and planning risk early, so you avoid paying for detailed drawings on a scheme that was never likely to be approved.

Local Policy Knowledge

ArchEvolve works with councils across West Sussex, East Sussex and Surrey, and reviews local plan policy for developer sites anywhere in the UK.

One Person Throughout

Alex Page carries out every feasibility study personally and, if you proceed, designs the scheme too, so nothing is lost between the study and the drawings.

Feasibility Studies in Sussex, Surrey and the UK

ArchEvolve carries out feasibility studies for homeowners across West Sussex, East Sussex and Surrey, and for property developers anywhere in the UK, working remotely over Teams with site visits where useful.

A typical study covers a review of the planning history and designations, a check of local plan policy, two or three design options modelled in 3D, a budget sense-check based on floor areas, and a short report with Enscape visuals and the planning route we recommend.

A feasibility study tests whether a specific project idea works, with design options. A development site appraisal is due diligence on land before you buy it, focused on constraints, planning history and risk rather than design.

For a single conversion, a small new build or a change of use, a feasibility study is usually enough. If the question is how many homes a site can hold and in what mix, our housing development feasibility studies focus on capacity and yield.

Yes. Part of the study is confirming the right route. Many householder extensions in England can be built under permitted development, while other projects need a full application. Our permitted development service covers the certificate route where it applies.

We are not cost consultants, but we give you floor areas, a description of the scope and a view on which options are likely to cost more and why. That gives builders or a quantity surveyor something concrete to price, so your budget is tested early.

That is still a useful result. A feasibility study costs far less than full design, and an honest no saves you from paying for drawings on a scheme unlikely to be approved. Often the study points to a smaller or different option that does work.

For homeowners in Sussex and Surrey we normally visit. For developer sites elsewhere in the UK, much of the work can be done remotely using maps, photographs, the planning register and Teams calls, with a site visit arranged where it adds value.

Yes. The chosen option is already modelled in Revit, so it carries straight into design development and planning drawings without starting again. That saves time and keeps the scheme you approved at feasibility stage consistent through to submission.

Frequently Asked Questions

Start Your Feasibility Study Today

Free initial consultation for homeowners in Sussex and Surrey and developers UK-wide. Tell us about your site or idea.