Avant-Garde Construction is a unique building and construction contractor covering residential Extensions, Renovations and New Builds across East Sussex, West Sussex and Kent.

With our many years of experience in the building trade, we cover:

– Property alterations and structural work
Renovation & refurbishment works
New-build homes
Design & build

In everything we do as a business, we stand true to our slogan of “Striving for Excellence” – We are expert builders, with an eye for detail and excellence and we are great at customer service too!

Our anything is possible attitude sets us apart as a building contractor and most of our work comes from referrals due to our excellent craftsmanship and service. We are fully insured and guarantee high standards of work and director-led involvement throughout every project.

Please browse through our Gallery pages for some examples of our work. It is a great place to start if you are looking for ideas.


About Us


If you’d like a quick, no-obligation estimate, simply give us a few details via our contact us form, call us on 01323 351763, or email us at

– Property alterations and structural work
Renovation & refurbishment works
New-build homes
Design & build


Absolutely the best building company in the South East. Completely delighted with the whole renovation project which included a dormer, extension, and groundworks. The Director has an eye for detail and could spot a fly on the moon! The whole team are artisans and take pride in their work. There is a wonderful atmosphere of love and support amongst the whole team which leaves your home glowing. Will be coming back to Avant-Garde for our next project for definite. I just hope they don’t get too booked up as they are proving to be very popular.”

Mrs. Harris – Eastbourne

“The Director and his team are respectful and knowledgeable. I’ve worked with them for a number of years professionally as Spitfire Architecture, where there have delivered outstanding builds for my clients. they have also worked on both my own home and those of family with great results. Honest, reliable, and nice to have around!”

Mr. Kent – Eastbourne

“Abundant thanks to Avant-Garde for their superb handling of a very challenging restoration project. Commitment and support have been matchless and outstanding. Altogether a phenomenal service”

Mrs. Roberts – Eastbourne

We’ve recently had a large extension built by Avant-Garde and I can honestly say that from the outset I am very happy with the handling of all the quote details. The team worked with me and helped me with the many options that come with building a new extension. I am very pleased to say that the build was completed within budget and I am one very happy customer. I will be using again on future projects”

Mr. Harris – Eastbourne

“I was looking for a good building company and I found Avant-Garde Construction. Their estimate was very clear and broken down into readable sections, and they even gave me optional items such as money-saving options along with many specified areas such as windows and doors. They were professional and organised, and so clean, as well. We very much look forward to working with you guys!!”

Mrs. Karkava – Eastbourne

“Great service. Very professional and well-finished. Just what I was looking for!”

Mrs. Garrote – Eastbourne

“I was living in the same property that Avant-Garde was carrying out the work we needed done. I felt my home and my family were completely respected. They were clean, tidy, and spent productive time with the finer details of decision making. This is a sort after quality you don’t often find with today’s traders.”

Mr. Simpson – Lewes

“Built an extension and did a fantastic job. I really liked their approach – they were helpful, friendly, and discussed what we wanted in great detail. The Director was pleasant, provided us with a written quote and they finished the job on time. I would recommend the business to others”

Mr. Jeffries – Heathfield