Looking For a Chelmsford Architect?
At Kirkwood, we’re a local team of architectural designers, structural engineers, and planning experts. We help homeowners across Chelmsford with every stage of their extension projects, from detailed drawings to planning applications. You no longer need to search for a reliable architect in Chelmsford. You’ve found Kirkwood.
Chelmsford's #1
architectural design firm
With the highest number of
5-star Google reviews
A secure and dependable company you can trust
A hassle-free service, packaged just for you
No matter where you are in Essex, we’re ready to assist
Precision-driven architectural design that delivers.
With 5,000+ projects to our name
No fluff, just well designed home extensions
As experienced Architectural and Structural experts, we give honest advice right from the start especially around build costs, before any money is spent. Our architectural design service covers everything from extension plans and planning permission to structural engineering. We support you through every step and can recommend trusted local builders. If you want a team that’s focused on getting your project right we are here to help.
- Avoid costly build errors
- Prevent council disputes
Hear it from our customers
More Google Reviews Here
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.
We now have an amazing extension, and would be happy to use the team again.
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!!!
Our architectural design services in Chelmsford
A family run company offering full architectural design services for homeowners looking to extend or upgrade their property. From early design concepts to structural calculations and Chelmsford planning permission, our house extension planning package takes care of everything.
Architectural plans & drawings
We produce clear architectural plans based on your extension goals and overall build budget. Some projects in Chelmsford need full building regulations drawings for builders, while others only require scaled planning drawings for approval. All our extension drawings are tailored to your property and meet Chelmsford Council planning standards.
Planning permission and permitted development
We’ll advise you on the right type of application for your house extension. This could be full planning permission, a householder application, permitted development, or prior approval. In Chelmsford, permitted development is often the most suitable option, but it still requires council approval and a Certificate of Lawfulness. We handle all the paperwork and deal directly with Chelmsford Council on your behalf.
Building regulations and structural calculations
All house extensions must comply with building regulations. We include the technical drawings and structural calculations needed to support your project. These documents are used for council approval, builder pricing, and during the construction stage. If required, we can also provide full building regulations drawings, though they are not always necessary.
Extension planning in Chelmsford
Our extension planning service in Chelmsford covers everything you need to get started. It begins with a quick Zoom consultation where we talk through your ideas and give honest guidance on design options and build costs. You’ll get clear advice tailored to your budget, and the initial planning consultation is completely free.
How much does an architect cost for a house extension in Chelmsford?
Architect costs for house extensions in Chelmsford usually start at around £1,400 and can go up to £3,000 depending on the size and complexity of the job. A small single storey extension under permitted development will often fall between £1,400 and £1,700. Detached homes tend to cost a bit more due to the extra time needed for the site visit. The cost of house extension plans is a small part of the total build but it’s one of the most important. If the design is wrong at the start the rest of the project can become a problem. We’ve been called in to fix plenty. Choose an experienced Chelmsford architect and give your project the best start.
Architect costs for house extensions
Architectural design costs will depend on the type and size of your home. Larger properties take more time to measure and produce detailed architectural plans which can increase the overall cost. Double storey extension plans are usually the most expensive while garage conversions are often the cheapest. If your extension includes internal layout changes this can also raise the price due to the extra design work involved. We provide clear extension plans suited to your space and budget.
What’s included in our architectural design services
Our architectural design services for Chelmsford house extensions include everything you need to move forward with confidence. We start with a full measured site survey of your home inside and out. Then we produce accurate existing and proposed extension plans along with any needed updates. You’ll also get a design review to adjust your ideas plus full planning application submission and ongoing management with Chelmsford City Council.It doesn’t stop there
As experienced Chelmsford and Essex architectural designers we deal with the council directly so you don’t have to. We also provide a free build cost estimate at the start and can recommend reliable local builders with fair pricing. Whether you’re planning a single storey extension, garage conversion or a full double storey project we make sure every part of the service suits your home and is carried out to a high standard.
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Ready to begin your Chelmsford 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.