How to Find and Brief an Architect for Your London Renovation

Not every renovation needs an architect. A kitchen refurbishment, a bathroom upgrade, a decorative refresh — these are contractor-led projects where a skilled contractor with good design instinct can deliver an excellent result without an architect's involvement.

But for a project of any real scale — an extension, a loft conversion, a basement, a whole-house renovation, or anything involving listed building or planning consent — the right architect is not a luxury. They are the person who turns your requirements into a buildable, approvable design, and whose work either sets up your contractor for success or makes their life unnecessarily difficult.

This guide is about how to find the right architect for a prime London renovation and how to brief them in a way that produces the result you want.

Do you need an architect?

The clearest signal that you need an architect is that you need planning permission or listed building consent. An architect prepares and submits the drawings required for planning applications, understands what each London borough's planning officers will and will not accept, and can design specifically for approval — rather than designing what they want and hoping it passes.

Beyond planning, an architect adds most value when:

• —The project involves significant structural change (removing walls, adding floors, excavating)
• —The existing layout has problems that need creative resolution
• —The property is listed or in a conservation area with complex consent requirements
• —You want a genuinely designed result — not just a functional renovation — and have a clear aesthetic ambition

If none of these apply, you may be better served by a design-and-build contractor with strong in-house design capability, or an interior designer working alongside a structural engineer. An architect adds cost and programme to a project that does not need their particular skills.

Types of architect practice to consider

London has hundreds of architectural practices. For prime residential renovation work, they broadly fall into a few categories:

Boutique residential specialists

Small practices — often three to twelve people — that work exclusively or predominantly on high-end London houses and apartments. These practices know their market deeply: they understand the planning officers in the relevant boroughs, they have established relationships with contractors and consultants, and their portfolio reflects the kind of work they actually deliver.

For most prime London renovations, a boutique residential specialist is the right starting point. They are large enough to be professional but small enough that a senior architect will actually run your project.

Mid-size practices with residential departments

Larger practices that include residential work alongside commercial, cultural, or masterplanning. These can be excellent choices for complex or technically ambitious projects — particularly where the brief involves unusual structural engineering, sustainability targets, or a strongly distinctive architectural vision. The risk is that residential work is not their primary focus and your project may not receive senior attention throughout.

Interior architects and designers

For projects where the primary work is internal — reconfiguring rooms, replacing finishes, designing bespoke furniture and joinery — an interior architect or interior designer may be more appropriate than a traditional architect. Interior architects are trained in both spatial planning and design detail, and are often better placed than architects for fit-out-focused work.

The distinction matters for briefing and for fee structures. An interior designer working on a prime London renovation typically charges 10–20% of project cost as a fee; a traditional architect on a planning-led project charges differently.

How to identify candidates

Portfolio and project type

Start with their portfolio. Do they have direct experience of the project type you are commissioning? A practice with an excellent track record in new-build housing is not automatically well-qualified for the conservation area renovation of a listed Kensington townhouse. Look for evidence of:

• —Projects of similar scale and type to yours
• —Experience in your specific area or with the relevant local planning authority
• —Material and specification quality consistent with your ambitions
• —Design sensibility that resonates with what you want — architecture is personal

Referrals from trusted contractors and agents

The most reliable route to a good architect is a recommendation from a contractor who has worked with them. A contractor who has built two or three of a practice's schemes will tell you, honestly, whether the drawings are buildable, whether the specification is realistic, and whether the architect's site behaviour supports or undermines the construction process.

Prime London estate agents are also useful sources of referrals — they know which architect-led renovations have sold well and can often point to specific practices whose work the market values.

RIBA Find an Architect

The Royal Institute of British Architects maintains a directory of chartered practices searchable by specialism, location, and project type. It is a useful first filter but should not be the endpoint of your search — shortlisting requires direct portfolio review and ideally personal referral.

How to brief an architect

A well-prepared brief is the most valuable thing a client can bring to their first meeting with an architect. It saves time, reduces fee waste, and ensures that the design process starts from a shared understanding of what you actually want.

A good brief covers:

Programme and phasing

When do you want to be on site? When do you need to be out of the property? Are there hard constraints — a lease renewal, a sale, a family event — that determine the completion date? Be honest about this: an architect who understands your programme constraints will tell you early if they are unrealistic.

Budget

State your actual budget, not a reduced figure intended to give you negotiating room later. An architect who designs for a budget of £800,000 when your real budget is £600,000 is doing work that will have to be redone. The earlier your architect understands the financial envelope, the better the design will be calibrated to it.

Room-by-room requirements

For each space, what do you want it to do? How many people will use it and how? What does it need to contain? Are there specific relationships between rooms that matter — a kitchen that opens onto a garden, a principal bedroom that is acoustically separated from children's rooms? The more specific you can be, the more useful the brief.

Aesthetic direction

Bring images. A mood board of thirty references — from architecture, interiors, materials, light — is worth more than any verbal description of what you want. Do not worry about being comprehensive or coherent: references are conversation starters, not specifications.

What you do not want

Often as useful as the positive brief: what have you seen done badly? What finishes have you lived with and disliked? What mistakes do you want to avoid? This is particularly valuable for avoiding the gap between what an architect thinks they have heard and what a client actually meant.

Fee structures and what to expect

Architectural fees for prime London residential renovation work are typically structured as either a percentage of construction cost or a fixed fee agreed at the start of each RIBA stage.

Percentage fees for full architectural services — from initial brief through planning, technical design, and construction administration — typically run to 8–15% of construction cost for residential projects. On a £1,000,000 renovation this implies an architectural fee of £80,000–£150,000.

For projects where planning is the primary deliverable and the client intends to manage construction themselves, a fee structured around RIBA Stages 1–3 only may be more appropriate. Discuss the scope and fee structure explicitly before appointing.

The contractor relationship

An architect who produces excellent designs but whose drawings cannot be built — because they are under-specified, geometrically inconsistent, or simply not coordinated with the structural and mechanical engineering — is a problem that falls on the contractor and ultimately the client.

The best prime London renovations happen when the architect and contractor have an established working relationship, or at minimum when both are chosen for their competence and professionalism and introduced early enough to coordinate properly.

If you already have a preferred contractor — or are working with ASAAN on the delivery side — the most efficient approach is usually to appoint the architect and contractor at the same time, or to involve the contractor in the design process from Stage 2 onwards. This significantly reduces the risk of a design that cannot be delivered to budget.

If you would like to discuss the architect-contractor relationship on a prime London renovation, contact us. We are happy to coordinate with your architect from the earliest stages of a project, and can suggest practices whose work and process we know from direct experience.