G3 Architecture

G3 Architecture G3 Architecture is a CIAT registered architectural practice, who specialise in all forms of planning

G3 Architecture provide architectural design services, solutions and specialise in the science of architecture, building design, construction and form the link between concept and construction. We negotiate the construction project and manage the process from conception through to completion. The practice specialises in all forms of Planning and Building Control applications and has experience wit

h both domestic and commercial projects throughout the UK. Summary of Services:
- Planning Applications
- Building Regulations Applications
- Listed Building Consent
- Domestic Extensions
- New Build Development
- Loft Conversions
- Garage Conversions
- Conservation
- Change of Use
- 3D Visualizations
- Land Registry Plans
- Party Wall Awards
- Contract Administration

The practice holds all the necessary Professional Indemnity and Public Liability Insurances as required by our professional bodies Code of Conduct.

26/03/2026

Our Hassocks loft and extension nearing completion.

Built by: SPR Homes Ltd

Our client and the design team are over the moon that plannign has been secured for this events venue in Twineham.The ap...
23/03/2026

Our client and the design team are over the moon that plannign has been secured for this events venue in Twineham.

The application has been stuck in the planning system since August 2024, but last week we found out it was approved!

Looking forward to seeing this project come to life.

Another happy client 😊 Built by SPR Homes Ltd
03/02/2026

Another happy client 😊

Built by SPR Homes Ltd

New project incoming!We have recently been instructed on this new project in Lewes and we can’t wait to get started! ...
04/11/2025

New project incoming!

We have recently been instructed on this new project in Lewes and we can’t wait to get started!

This year we have noticed a trend in our clients wanting to form an annex, so we thought we would share some case studie...
31/10/2025

This year we have noticed a trend in our clients wanting to form an annex, so we thought we would share some case studies of a few different types, that G3 Architecture has secured planning approvals for:

Case Study 1:
This client had a generous side plot, which is on a split level site.
The client approached G3 Architecture as they have two adult sons who still live at home, as they are saving to get on the property ladder.
G3 Architecture were asked to design a self-contained annex, which would allow their children their own independent space.
This project formed a two-bedroom self-contained annex, with access via the main dwelling.

Case Study 2:
This client had an existing double garage to the side of their property and wanted to form an annex for visiting family members.
The annex will remain dependent upon the main house, but contains one bedroom on the first floor and an open plan ground floor arrangement, with direct access to the rear garden.

Case Study 3:
This client had a garage attached to the side of their house, we demolished the garage and rebuilt it (longer). This annex is for our client elderly mother, who had sold her house and wanted to live nearby.
This annex contains one bedroom, shower room and an open plan arrangement.

Case Study 4:
This client had an existing double garage to the rear, where we will be extending it and converting it (we also extended the main dwelling too as part of the same planning application).
This annex is being built for our client’s parents and offers a single bedroom, bathroom and open plan space, with direct access to the beautiful rear garden.

Are you thinking about how to adapt your home for your family's next chapter? Let's start the conversation.

24/10/2025

Seaford Town Football Club & Seaford Town FC Youth asked for assistance with this community project, where we designed a new disability access path and converted one changing room to form a refreshment area. We are also overseeing the build on their behalf.

This community project also includes a defibrillator, drinks fountain and er****on of three new sets of goals, so the children have nice facilities to play football, in a fun and safe environment.

Built by: Hometrends

Today we’re returning to a recently completed project in Seaford.We completely modernised this house both internally and...
17/10/2025

Today we’re returning to a recently completed project in Seaford.

We completely modernised this house both internally and externally, with crisp rendered walls, vertical slate cladding, new roof, integrated solar panels, large rear extension and new double height vaulted entrance hall.

The large rear extension forms an open plan kitchen/dining/garden room.

We love the end result…

The landscape and external works have progressed on our Friston new build project, within South Downs National Park..We ...
10/10/2025

The landscape and external works have progressed on our Friston new build project, within South Downs National Park..

We are looking forward to seeing the completed house, along with the most beautiful views!

Some internal photographs of our Seaford extension…This ground floor extension will create a large open plan kitchen/din...
03/10/2025

Some internal photographs of our Seaford extension…

This ground floor extension will create a large open plan kitchen/dining/garden room, with views of the rear garden and flooded with natural light courtesy of the skylights…

More progress updates to follow!

Built by: Greve and Son Ltd

Our Seaford single storey rear extension is moving along nicely…The ground floor extension will create a large open plan...
30/09/2025

Our Seaford single storey rear extension is moving along nicely…

The ground floor extension will create a large open plan kitchen/dining/garden room.

The roof has been stripped and replaced at the front; the rear will be done as soon as the rear dormer has been extended (this will form an extra bedroom).

Built by: Greve and Son Ltd

Our Seaford annex extension is progressing well on site.This year we have secured planning approval for four separate an...
26/09/2025

Our Seaford annex extension is progressing well on site.

This year we have secured planning approval for four separate annexes, so they are proving popular with our clients. In most cases our clients have an elderly parent coming to live their family and in one case, the annexe will actually be for their older children to livein.

If you’re considering an annex, please get in touch.

Built by: Greve and Son Ltd

Address

Seaford

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+441323404880

Website

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