Architectural Design in Cardiff & Bristol

Premium architectural services specialising in extensions, loft conversions, renovations and bespoke residential design.

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House Extensions, Loft Conversions & Home Renovation Specialists in Cardiff, Newport & Bristol

Hafren Designs provides professional design and planning services for homeowners looking to transform their properties through house extensions, loft conversions, garage conversions and complete home renovations throughout Cardiff, Newport, Bristol and the surrounding areas.

With over 21 years of experience, we help homeowners maximise their property's potential while keeping projects practical, affordable and fully compliant with planning and building regulations.

Why Choose Hafren Designs?

  • 21+ Years of Residential Design Experience
  • House Extension Plans & Drawings
  • Loft Conversion Design Specialists
  • Planning Permission Applications
  • Building Regulations Drawings
  • Accurate Build Cost Estimates
  • 3D Visualisations Included as Standard
  • Fast Turnaround Times
  • Trusted Builder Recommendations
  • Personal Service from Start to Finish

Extension Plans Designed Around Your Budget

Many homeowners searching for "extension drawings near me", "house extension costs" or "extension plans Cardiff" are looking for more than attractive drawings. They want realistic designs that can actually be built.

At Hafren Designs, every project is designed with your budget in mind. We work closely with trusted builders across South Wales and the South West, allowing us to provide realistic build cost estimates and practical design solutions from the outset.

Our focus is creating beautiful homes that are both achievable and affordable.

Loft Conversion Design Experts

A loft conversion is one of the most cost-effective ways to add valuable living space to your home. Whether you need an additional bedroom, home office, en-suite or family room, we provide complete loft conversion design packages including planning advice, technical drawings and 3D visualisations.

We regularly help homeowners searching for loft conversion plans, loft conversion costs and loft conversion designers in Cardiff, Newport and Bristol.

Planning Success Across Cardiff, Newport & Bristol

We have built strong working relationships with planning departments throughout Cardiff, Newport, Bristol and surrounding local authorities. Our experience helps streamline the planning process and maximise the likelihood of successful approvals.

Supporting You Every Step of the Way

From the initial consultation through to planning approval and construction, we guide our clients through every stage of the process. During our first meeting, we often sketch design concepts on the spot to help visualise opportunities for your property.

Unlike many design companies, we do not split services into multiple chargeable stages. We provide complete, buildable drawing packages from the beginning, helping clients avoid unnecessary costs and delays.

Get a Free Consultation

If you're considering a house extension, loft conversion, garage conversion or home renovation in Cardiff, Newport or Bristol, contact Hafren Designs today for a free, no-obligation consultation.

Request Your Free Quote

Our Services

House Extensions
Loft Conversions
Barn Conversions
Renovations
Double Storey Extensions

Our Work

Advice & Insights

No, the majority of loft conversions do not need planning permission, however some do. It all depends on what we're doing, where we're doing it and how big it is. The best way to resolve this is with a free in-person consultation.

This depends on your house type, available garden space and budget. We offer a free design consultation where we assess the property and sketch solutions.

We use a simple pricing structure designed to remove confusion. We can quote over the phone or by email, so please get in touch.

This depends on the needs of your family and the home, second floors can add value to the overall build however it can add significant cost, sometimes blowing the budget and actual brief. The best way to analyse this is to speak to us on 07788314540 allowing us to weigh up the options and budget specifically to your needs.

Most projects are with the client after 2/3 weeks but this depends on complexity and urgency, planning permission can take around 8 weeks if the design isn't too controversial, however recently Bristol City Council planning department can take longer if there are some site specific restrictions. We ensure we work with the council to achieve good designs and in a timely fashion.

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