Danbury architects offering house extension services, build cost advice, and architectural plans for local planning

Danbury Architects

Experienced Danbury architects specialising in custom home extension plans and full architectural services. From rear and side extensions to loft conversions, we design every project with your home and budget in mind. Speak to a trusted architect in Danbury today.

Danbury's #1
architectural design firm

with the highest number of
5-star Google reviews

Brentwood 5‑Star Google Reviews
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A secure home extension design company you can trust

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Architectural design  services in Essex, packaged just for you

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No matter where you are in Essex, we’re ready to assist

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Precision-driven architectural design that delivers.

With 5,000+ projects to our name

No fluff, just well designed home extensions

The brains behind the bricks

As trusted architects in Danbury, we are known for giving honest and upfront advice, especially around build costs, and all before you have spent a penny. Our full architectural design service covers everything from house extension plans and planning permission to structural engineering. As your local Danbury architects, we guide you through every stage and can also connect you with reliable local builders. If you are looking for a team that genuinely cares about getting your project right, we are here to help.

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Wallet icon representing Kirkwood’s cost-effective architectural design services for home extensions in Essex.
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5.0
Based on 60 reviews
powered by Google
Freyja profile pictureFreyja
19:14 01 Feb 25
We’ve worked with residential architects before, but Jamie and his team, especially Nathan, were fantastic. Kirkwood designed plans for our double-story side extension, loft conversion, and single-story rear kitchen extension, and we knew we had to choose the right company since it involved our entire home.

Based in Brentwood, Essex, we were also introduced to builders and tradespeople through Kirkwood, and they were excellent—professional, respectful, and a pleasure to work with. If we ever take on another project, we wouldn’t hesitate to use them again.
Riley Russell profile pictureRiley Russell
13:58 31 Jan 25
Kirkwood done a fantastic job on our architectural plans for our new single story kitchen extension in Brentwood. They gained us approval from the council and also provided the structural engineering for the project. We used their recommended builder who so far, we cannot fault one bit. Thanks again and highly recommend.
iansalsbury profile pictureiansalsbury
10:54 24 Jan 25
The Kirkwood team were a pleasure to work with and have in our house. What can be a stressful time was made a lot easier by a team who build with quality, communicate clearly, and address and action any questions you raise....however small or large.
We now have an amazing extension, and would be happy to use the team again.
Natalie Moore profile pictureNatalie Moore
12:29 23 Jan 25
Jamie and team are always helpful and very knowledgeable. Work on our kitchen extension carried out professionally and to high standard from design to build completion. A fantastic job, and very pleased. Many thanks
Kelly Pye profile pictureKelly Pye
08:27 22 Jan 25
Jamie has provided lots of advice on house improvements including different options for extending as well as the possibility of a loft conversion. He responds quickly to queries and is full of knowledge! I wouldn’t hesitate to recommend him
Boris profile pictureBoris
19:35 12 Nov 23
Kirkwood Design and Build Builders, Wickford did a fantastic job on our extension in Billericay. They helped with planning permission, design, and build. Professional company through and through. Given that we haven't done such a large project before, we were a bit nervous and had a lot of questions. Jamie and his team from Kirkwood Design and Build Builders was good putting us at ease and now that we are fully complete with all our work, we further appreciate how professional this company is. Would highly recommend.
Holly Luckin profile pictureHolly Luckin
09:29 11 Nov 23
Nothing was to much hassle and Jamie is lovely!
john rocke profile picturejohn rocke
11:33 09 Nov 23
Great company and very professional. Nothing was a problem, very helpful and will definitely use them again. Have already given their details to a friend of mine.
Dave Lynch profile pictureDave Lynch
19:32 08 Nov 23
Work carried out to a very high standard, very pleased with the results.
Sharon Gormer profile pictureSharon Gormer
13:06 07 Nov 23
Very professional company, helpful and friendly staff.
Aaron Tutton profile pictureAaron Tutton
11:15 07 Nov 23
Great builders, very professional and perfectionists! Thank you for such an amazing job
Olly Tait profile pictureOlly Tait
13:28 21 Apr 23
Jamie and his team were so profesional from start to finish and made the job a joy to watch our dream come together.
Very knowledgeable and contactable throughout the process.
Couldn't ask for a better outcome and value for money.
Will definitely be recommending and 100% will use again!
5 star!!!
Sandie profile pictureSandie
20:03 20 Jan 23
I highly recommend the Kirkwood team! Exceptional workmanship, clear communication, Jamie & his team have provided the utmost as a polite & professional team! Very satisfied customer, looking forward to planning our loft conversion this year with you guys! Many thanks!

Our architectural design services in Danbury

Kirkwood are experienced Danbury architects providing complete architectural design services for homeowners looking to extend or improve their property. From the initial concept through to structural calculations and planning permission in Danbury, our house extension planning package includes everything you need.

Architectural plans & drawings

We produce clear and detailed architectural plans tailored to suit your house extension budget. Some projects require full building regulations drawings for construction, while others only need planning drawings for approval. All our extension plans are accurately scaled, clearly presented, and easy to follow. Every set of plans is created to meet Chelmsford City Council planning requirements.

 

Danbury architects offering architectural design services for house extensions, including planning support and build cost advice

Planning permission & permitted development

We will advise you on exactly what type of application your house extension needs. It could be full planning, a householder application, permitted development, or prior approval. In Danbury, permitted development is often a common route, but it still requires council approval and a Certificate of Lawfulness. We handle all the paperwork and deal directly with Chelmsford City Council on your behalf.

 

Building regulations & structural calculations

All house extensions must comply with building regulations. We prepare a full set of technical drawings and include structural calculations where required. These extension plans are used for council checks, builder quotations, and the actual construction. Building regulations drawings can also be provided if your project needs them, though they are not always essential.

Extension planning in Danbury

We offer a complete extension planning service in Danbury, covering everything you need for your house extension. It all begins with a quick Zoom call where we talk through what is possible and give you honest advice on design options and build cost estimates. You can think of us as your own house extension affordability guide, and the planning permission advice is completely free.

 

Danbury architects producing clear architectural plans and house extension drawings for planning and building approval
Danbury architects explaining house extension costs, architectural plans pricing, and build cost estimates

How much does an architect cost for a house extension in Danbury?

Architect costs for house extensions in Danbury typically start at around £1,400 and can rise to £3,000 depending on the size and complexity of the project. A smaller single storey extension under permitted development usually falls between £1,400 and £1,700. Detached homes may cost slightly more due to the extra time required for site measurements. While the cost of architectural plans is a small part of the overall budget, it is one of the most important. If the design is wrong at the start, the entire project can go off track. We have been called in to fix enough of them. Work with an experienced Danbury architect and get your extension off to the right start.

Architect costs for house extensions

Architectural design costs vary depending on the size and type of property. Larger homes take more time to survey and need more detailed plans, which can affect the overall price. Double storey extensions are usually the most expensive, while garage conversions tend to be the most affordable. If your extension includes internal layout changes, this can also increase the cost due to the extra design time. As experienced architects in Danbury, we create clear and accurate house extension plans suited to your layout and budget.

What’s included in our architectural design services

Our architectural design services for Danbury house extensions include everything you need to get started with confidence. We begin with a full measured survey of your home, covering both the interior and exterior. From there, we create detailed existing and proposed extension plans, including any necessary amendments. You will also receive a design revision consultation to fine-tune your ideas, followed by full planning application submission and ongoing management with Chelmsford City Council.

It don’t stop there

As experienced Danbury architects, we deal directly with the council on your behalf so you do not have to worry about the paperwork or the process. We also provide a free build cost estimate at the start and can introduce you to trusted local builders with fair pricing. From single storey extensions and garage conversions to full double storey projects, every part of our service is tailored to your needs and delivered to a high standard.

Need help finding a good local builder near you? This guide shares what to look out for and how to avoid costly mistakes.

Danbury architects managing house extension planning, architectural plans, build cost estimates, and builder recommendations
Danbury architects offering full architectural design services for house extensions including planning, surveys, and drawings

Ready to begin your Danbury project?

Book a Zoom consultation, get free expert advice, and move forward with the next stage – your architectural plans.

Get in touch by emailing info@kirkwoodbuild.co.uk or phoning 01268 944233 to schedule a free consultation. Let’s turn your ideas into a well-designed, approved, and beautifully planned extension.

Danbury | Architectural Design & Planning

Postcodes we serve in and around Danbury

CM1, CM2, CM3, CM4

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