For projects that need more than a designer.
A complex property rarely fits neatly into one discipline.
A substantial renovation can involve planning, structure, services, heritage, interiors, procurement and construction — often with dozens of decisions connecting one to another.
Phasezero brings those decisions together.
We combine architectural thinking, interior design and practical construction knowledge into one coherent process, then remain involved as the design becomes reality.
Whether you are undertaking a full house refurbishment in London or restoring a listed building, we look at the whole project rather than one layer of it.
Designed around the project you are about to undertake.
Whole-House Renovations
For clients undertaking a substantial transformation rather than a single extension or room refurbishment.
We coordinate architecture, interiors, planning, technical design and construction into one considered process — from first brief to finished space.
Historic & Listed Properties
Sensitive buildings require more than a beautiful design.
We work with the existing architecture, heritage constraints, materials and construction realities to develop interventions that serve the building while making it work for contemporary life.
Property Feasibility
Considering buying a property and want to understand its potential before committing?
We assess the building, its planning context and the opportunities for change so you can make decisions with confidence before the design begins.
The most important decisions happen before the drawings.
We call this Phase Zero.
Before developing a design, we look at the building, the site, the planning context, the budget, the brief and the way the finished space needs to work.
We identify opportunities, constraints and potential problems early, so the design begins from an informed position.
The result is not simply a beautiful concept. It is a project that has been thought through.
UNDERSTAND
The building, site, brief and constraints.
DEFINE
The opportunities, priorities and design direction.
PLAN
The route from first concept to construction.
From London homes and historic buildings to properties on the Amalfi Coast, our projects vary in scale and character but share the same approach: thoughtful design grounded in the reality of the building.
FAGIOLINO HOUSE
Furore · Amalfi Coast · Italy
Interior Architecture · Design · Procurement · Construction
A historic coastal home transformed through colour, natural materials and bespoke joinery, creating a contemporary interior that remains rooted in its setting.
MILL LANE
London · Residential · Ongoing
Architecture · Planning · Technical Design · Construction Management · Interiors
A substantial London renovation and extension where design decisions continue through construction, including the resolution of unexpected existing conditions uncovered during demolition.
One project. One coherent process.
We can be involved from an early feasibility study or join an existing project at a later stage. Our role is shaped around what the project actually needs.
INTERIOR ARCHITECTURE & DESIGN
Spaces, materials, lighting, joinery and furniture are developed as part of the architecture rather than added afterwards.
ARCHITECTURAL DESIGN
From concept and planning through detailed and technical design, we develop the architectural framework of the project.
FEASIBILITY & STRATEGY
Understand what is possible before significant design decisions or expenditure are committed.
PROCUREMENT & FINAL DETAIL
From bespoke joinery and stone to lighting, sanitaryware and finishes, we coordinate the details that complete the project.
CONSTRUCTION MANAGEMENT
We stay involved when the drawings become a building, coordinating contractors, specialists, procurement and design decisions on site.
PLANNING & HERITAGE
Planning applications, listed building consent and coordination with the specialist consultants required by the project.
Design that understands how buildings are actually made.
A beautiful drawing is only the beginning.
Existing buildings rarely behave exactly as expected. Materials change. Dimensions differ. Services compete for space. Structural conditions are uncovered. Decisions have to be made quickly on site.
Our experience across design and construction allows us to respond to those realities without losing sight of the original design.
We don't stop when the drawings are finished.
We stay involved as the project is built.
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Architecture first. Detail always.
The strongest interiors begin with the building itself.
Proportion, natural light, movement and the relationship between spaces establish the foundation. Colour, timber, stone, metal, textiles, lighting and bespoke joinery build upon it.
The homes and spaces that feel genuinely considered are the ones where that sequence was followed. The grey-and-white interiors that fill listings often skip it. Natural materials: wood, marble and stone are not neutral finishes applied at the end. They carry warmth, weight and depth. They are colour in themselves.
The result is an environment that feels considered rather than decorated.
THE BUILDING
We respond to the character, history and potential of the existing architecture.
THE MATERIALS
Natural materials are selected for their texture, longevity and ability to give spaces depth.
THE EXPERIENCE
Every decision contributes to how the space feels, functions and is experienced.
From first conversation to finished space.
01
DISCOVER
We understand the property, your ambitions, budget, timeline and the way you want the finished space to work.
02
DESIGN
We develop the architectural and interior concept, establishing the spatial arrangement, materials and overall direction.
03
DEVELOP
The design becomes buildable through technical information, planning, approvals, specifications and consultant coordination.
04
DELIVER
We remain involved through construction, procurement, installation and final completion.
The level of our involvement is tailored to your project.
In Their Words
What stood out most was their attention to detail at the earliest stages. Lisa helped us define our priorities and align all stakeholders before moving forward, which made a huge difference as the project progressed. Her input has had a lasting impact on how we approach new developments. Highly recommended for anyone looking to get things right from the outset.
Residential, Grade II listed building
Working with Lisa & Flavia gave us confidence from day one. They quickly understood the complexities of our project and translated them into a clear, structured approach. Communication was always straightforward, and they were proactive in highlighting risks we hadn’t even considered. It’s rare to find a team that combines strategic thinking with such practical insight.
Hospitality Client, Management
We approached Phasezero at a very early stage with just a rough idea, and they helped turn it into something tangible. Their ability to challenge assumptions while still respecting our vision was incredibly valuable. The clarity they brought to the brief saved us both time and cost later on. It felt like a genuine partnership rather than a standard consultancy service
Private Client, Interior Design
Phasezero was founded by Lisa Gentile, an SBID member, with a simple belief: the best projects happen when design decisions and construction realities are considered together from the beginning.
Today, the studio delivers architecture-led interior design and full house refurbishment and listed building interior design across London, Italy and Spain, working with private clients and heritage property owners who want spaces that feel considered, lasting and entirely their own.
50+ Projects · 7 Years · London, Italy, Spain
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The best projects start before the drawings. Tell us about your property and your ambitions, and we'll begin with the questions that matter.
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