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Architectural Design & Planning Services in Cardiff

Specialists in house extensions, new builds and planning applications across Cardiff and South Wales.

Trusted by homeowners for fast, efficient planning approvals — with applications typically submitted within 2 weeks of measured survey.

Looking for an Architect in Cardiff?

If you're planning a house extension, new build or property development, choosing the right architect in Cardiff is key to securing planning permission and delivering a successful project.

At HEAMES Architectural Design & Planning Consultants, we provide expert architectural design, measured surveys and planning application services across Cardiff and South Wales. Our approach is focused on achieving planning approval efficiently, with designs carefully developed to align with local planning policy.

Architectural Services in Cardiff

House Extensions Cardiff

Design-led house extensions tailored to your property, maximising space while meeting local planning requirements.

New Build Design Cardiff

Complete architectural design for new homes, from concept through to planning approval.

Planning Applications Cardiff

Preparation and submission of planning applications, including all drawings and supporting documents.

Measured Surveys & Existing Drawings

Accurate measured surveys forming the foundation for all architectural proposals.

Listed Buildings & Conservation Areas

Specialist experience working within conservation areas and with listed buildings across Cardiff.

We provide a full range of architectural design and planning services for residential projects:

Our Architectural Process

Stage 1 – Measured Survey & Consultation

Accurate measurement of your property and discussion of your project goals.

Stage 2 – Existing Drawings

Preparation of detailed existing plans.

Stage 3 – Design Development

Tailored architectural designs aligned with Cardiff planning policy.

Stage 4 – Planning Submission

Full preparation and submission of your planning application.

Stage 5 – Managed to Decision

Ongoing liaison with the local authority through to decision.

We follow a clear, structured process to deliver successful outcomes:

Proven Planning Success in Cardiff

  • Two-storey house extension approved within a Cardiff conservation area in just 4 weeks

  • Residential conversion project delivering multiple units through a strategic planning approach
     

(View Full Case Studies →)

Planning applications submitted within 2 weeks

We are the fastest, planning-focused architectural designers in Cardiff specialising in approvals and complex sites

Why Choose HEAMES Architectural Design & Planning Consultants

✔ Fast response within 24 hours
✔ Planning applications typically submitted within 2 weeks
✔ Building surveyor-led expertise
✔ Designs aligned with Cardiff planning policy
✔ Clear, fixed fees agreed upfront
✔ Direct, one-to-one service
✔ Experience with listed buildings and conservation areas
✔ Proven track record of successful planning approvals

Architect Cardiff – Frequently Asked Questions

How much does an architect cost in Cardiff?

Costs vary depending on the size and complexity of your project. We provide clear, fixed fees agreed before work begins.

Do I need an architect for a house extension in Cardiff?

Most projects require architectural drawings and planning approval. Working with an experienced architectural designer improves your chances of approval.

How long does planning permission take in Cardiff?

Planning decisions typically take 8 weeks, although preparation and submission can be completed much faster.

Can you help with conservation areas?

Yes — we have extensive experience working with listed buildings and conservation areas across Cardiff.

Areas We Cover Across Cardiff & South Wales

South Wales & Surrounding Areas

  • Cardiff, UK ⭐

  • Roath, Cardiff, UK

  • Canton, Cardiff, UK

  • Pontcanna, Cardiff, UK

  • Llandaff, Cardiff, UK

  • Lisvane, Cardiff, UK

  • Rhiwbina, Cardiff, UK

  • Cyncoed, Cardiff, UK

  • Whitchurch, Cardiff, UK

  • Penarth, UK 

  • Dinas Powys, UK

  • Barry, UK

  • Caerphilly, UK

  • Newport, UK

  • Bridgend, UK

  • Vale of Glamorgan, UK

  • Pontypridd, UK

  • Llantrisant, UK

  • Aberdare, UK

  • Merthyr Tydfil, UK

  • and surrounding areas

Architectural Services Across Cardiff & South Wales

We provide architectural design, house extensions and planning applications across Cardiff, including Roath, Canton and Pontcanna, as well as surrounding areas such as Penarth, Barry and Newport.

Ready to Start Your Project in Cardiff?

Take the first step towards your house extension or new build with expert architectural guidance.

Frequently Asked Questions

How much do planning permission drawings cost?
The cost of planning drawings varies depending on the size, complexity and location of the project.

At HEAMES Architectural Drawings & Planning Consultants, we provide a clear and transparent staged fee structure for typical residential planning projects. Each stage of work is agreed and confirmed before proceeding, ensuring clients have full clarity and control throughout the process.

For a typical house extension planning application, our standard professional fee is:
£1,333.00

Larger or more complex projects such as new build homes, flat conversions or listed buildings may require additional work and will be quoted individually.


Do I need planning permission for an extension?
Some house extensions fall under Permitted Development, meaning formal planning permission may not be required.

However, the process of preparing the drawings and documentation is largely the same, and many homeowners choose to obtain a Lawful Development Certificate for peace of mind.

This certificate confirms that the work is legally permitted and is often requested by solicitors during the sale of a property to ensure the development was carried out lawfully.

We can advise whether your project requires planning permission or permitted development approval.


How long does planning permission take?
Most planning applications are determined within approximately 8 weeks once submitted to the local planning authority (and their fee has been paid).


However, the overall timeline can vary depending on:

  • The complexity of the project

  • Whether the property is within a conservation area or listed building

  • Requests for additional information from the planning officer

 
Before submission, we prepare the necessary drawings and documents to help ensure the application can be assessed efficiently.

What drawings are required for a planning application?

Most planning applications require a set of existing and proposed architectural drawings, including:
 

  • Existing floor plans

  • Proposed floor plans

  • Elevations (front, rear and side views)

  • Site plan and location plan


These drawings must be accurate and drawn to scale so that the planning authority can properly assess the proposal.

DraftForge provides planning permission drawings across:

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Share information on a previous project here to attract new clients. Provide a brief summary to help visitors understand the context and background of the work.

How much do planning permission drawings cost?

The cost of planning drawings varies depending on the size, complexity and location of the project.

At DraftForge, we provide a clear and transparent staged fee structure for typical residential planning projects. Each stage of work is agreed and confirmed before proceeding, ensuring clients have full clarity and control throughout the process.

For a typical house extension planning application, our standard professional fee is:

£1,333.00

Larger or more complex projects such as new build homes, flat conversions or listed buildings may require additional work and will be quoted individually.

Do I need planning permission for an extension?

Some house extensions fall under Permitted Development, meaning formal planning permission may not be required.

However, the process of preparing the drawings and documentation is largely the same, and many homeowners choose to obtain a Lawful Development Certificate for peace of mind.

This certificate confirms that the work is legally permitted and is often requested by solicitors during the sale of a property to ensure the development was carried out lawfully.

We can advise whether your project requires planning permission or permitted development approval.

How long does planning permission take?

Most planning applications are determined within approximately 8 weeks once submitted to the local planning authority (and their fee has been paid).

However, the overall timeline can vary depending on:

  • The complexity of the project

  • Whether the property is within a conservation area or listed building

  • Requests for additional information from the planning officer

 

Before submission, we prepare the necessary drawings and documents to help ensure the application can be assessed efficiently.

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Write a Title Here

Share information on a previous project here to attract new clients. Provide a brief summary to help visitors understand the context and background of the work.

How much do planning permission drawings cost?

The cost of planning drawings varies depending on the size, complexity and location of the project.

At DraftForge, we provide a clear and transparent staged fee structure for typical residential planning projects. Each stage of work is agreed and confirmed before proceeding, ensuring clients have full clarity and control throughout the process.

For a typical house extension planning application, our standard professional fee is:

£1,333.00

Larger or more complex projects such as new build homes, flat conversions or listed buildings may require additional work and will be quoted individually.

Do I need planning permission for an extension?

Some house extensions fall under Permitted Development, meaning formal planning permission may not be required.

However, the process of preparing the drawings and documentation is largely the same, and many homeowners choose to obtain a Lawful Development Certificate for peace of mind.

This certificate confirms that the work is legally permitted and is often requested by solicitors during the sale of a property to ensure the development was carried out lawfully.

We can advise whether your project requires planning permission or permitted development approval.

How long does planning permission take?

Most planning applications are determined within approximately 8 weeks once submitted to the local planning authority (and their fee has been paid).

However, the overall timeline can vary depending on:

  • The complexity of the project

  • Whether the property is within a conservation area or listed building

  • Requests for additional information from the planning officer

 

Before submission, we prepare the necessary drawings and documents to help ensure the application can be assessed efficiently.

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