Essex Outbuildings and Annexe Services

Architectural Designers for your outbuildings in Essex: Fixed Fee, Stress-Free

Looking for architectural design experts for your outbuilding or annexe? We make the job simple and easy. With decades of experience, we’ve served hundreds of happy clients and helped them transform their houses and gardens into the home of their dreams, on time and on budget.

We specialise in garden buildings and annexes that balance comfort, compliance and cost clarity.Our team supports homeowners from initial ideas and feasibility through to planning permission and technical design, helping you move forward with confidence before you build.

Get in touch today for your free quote and appraisal of your property’s needs with experts near you.

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Your local architects – committed to excellence

No costly surprises
We offer a fixed fee guarantee, which means you will pay fixed fees across the project, ensuring no costly surprises are sprung on you. You can rely on us to stick to the loft conversion costs we initially quote.

Unlimited designs
Our dedication to providing unlimited design iterations is something we're incredibly proud of as a business. We'll keep producing attic conversion designs until you're completely satisfied.

Dedicated point of contact
Get your own personal project manager for your loft conversion. Serving as your personal point of contact, get regular updates on your work and ask any questions you have about your attic transformation.

Our customer testimonials

"Excellent team and very helpful. Design spec answered all our questions very promptly even when we asked for things to be changed/amended it was completed really quickly. The fixed price included unlimited alterations to get the final result and exactly what we wanted. They guided us through all the different stages and explained the process very clearly. We can’t recommend Design Spec enough. Thank you to Dan and the team at Design Spec."

"Design Spec Ltd are fantastic. They have helped us through the design and planning of our bungalow renovation and extension and we could not be more grateful. They are quick at responding, patient and very professional. We would recommend this company to everyone going through this process!"

"We are completely inexperienced and had no idea where to start with getting our double storey extension plans off the ground. So grateful we found Design Spec. Wonderful team to work with; friendly, helpful, and very knowledgeable. Quick to acknowledge every query and provided pragmatic and honest advice. We had a huge delay getting our planning permission result from the council and am so grateful to Dan for incessantly chasing a response - completely took the stress and pressure from us (which was a huge relief as we have a newborn baby and couldn't have coped ourselves) and the plans passed first time. Excellent service and we are now moving forward with them for our building control approval. Looking forward to working with them again on the next stage of our project."

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Start your architecture journey today

If you’re considering a garden annexe, backyard studio or garden building, get in touch with our team in Essex today and we’ll be happy to help you with a fixed fee quote.

Home Extensions
If you want some extra living space but don't want the hassle of moving house, an extension is a more affordable alternative.

Loft Conversions
Add significant value to your property by transforming part of your home into a brand-new living space when converting your loft.

Renovation
Let us transform your house into the home of your dreams. Our residential architects can help bring your vision to life.

Garden Annexe & Garden Building Design Specialists in Essex

Architectural Designers for your outbuildings in Essex: Fixed Fee, Stress-Free

Your local architects – committed to excellence

Our customer testimonials

Start your architecture journey today

Frequently Asked Questions

Take a look at our latest projects

Get your fixed fee quote today