Services & Fees

How we work

Feasibility First

We don’t jump to a single scheme. We test options early to help you make informed decisions before committing time and money.

Design that understands value

Good design is not just aesthetic. We prioritise efficiency, commercial pressures and planning policy alongside design excellence.

Clear structured delivery

We use a staged, transparent process aligned with the RIBA Plan of Work, so you always know what is happening, what it costs and what comes next.

What We Offer

A minimalistic architectural model of a house with a sloped roof, set on a rectangular base, made of beige, brown, and terracotta colored materials.

Small Extension/ Alterations

Smaller home solutions where space is limited

A minimalist architectural model featuring a small house with a gabled roof, set on a grid-like base with surrounding walls, all in neutral tones.

Medium Extension/ Reconfiguration

Bigger family home projects where layout, light, planning and value all need proper thought

Architectural model of a house with a triangular roof, made of textured material, placed on a rectangular base with surrounding framing.

Large Extension/ Whole House Transformation

Serious extensions and whole-house upgrades where the smallest details make a big impact

A small architectural model of a house made from pinkish-brown material, placed on a light-colored wooden tray.

New Home

The dream home. A blank sheet approach to a site or replacement dwelling

Two small rectangular blocks, one light brown and one dark brown, arranged to form a small structure on a white surface with a white background.

Development/ Complex Projects

Small sites, multi-unit housing, listed and awkward sites

How we do it

Feasibility Study - From £3,000

Every project at +TwoThreeThree starts with a Feasibility Study.

A Feasibility Study is a focused early stage review of your home, property or site. It helps you understand the opportunities, the constraints, the risks and the best route forward before you invest more time and energy into the project.

It is designed for homeowners, buyers, landowners and developers who want clear, design-led advice at the point where the right decision matters most.

Before you commit to a full Architectural appointment, we believe its best to understand what is actually possible. Whether you are thinking about extending, reconfiguring, building new or testing the potential of a site, the Feasibility Study gives you clarity and options before the project gathers pace.

Architectural Services - £Priced by Proposal

If the Feasibility Study shows a clear route forward, we can provide a tailored proposal for the next stage of work.

Full Architectural Services are based on the scope, complexity and ambition of the project. The right level of support depends on the project, the decisions that need to be made, and how much guidance you require along the way.

Frequently Asked Questions