Working with an Architect in London: How to Choose, Appoint and Get the Best Results

An architect is a professionally trained designer and technical advisor. The RIBA (Royal Institute of British Architects) stages of work — the standard framework for architectural services in the UK — divide a project into eight stages:

Stage 0 (Strategic Definition): understanding the client's aspirations, constraints, and feasibility. Before any design begins, clarifying what the project is trying to achieve.

Stage 1 (Preparation and Briefing): developing the detailed client brief, site appraisal, budget planning, and assembling the professional team.

Stage 2 (Concept Design): initial concept designs exploring options for the design approach, layout, form, and character of the project. The client's preferred direction is agreed.

Stage 3 (Spatial Coordination): developing the concept into a coordinated design with structural and M&E engineer input. Drawings are developed to sufficient detail for a planning application.

Stage 4 (Technical Design): developing the full technical detail required for building control compliance and contractor pricing — structural drawings, specification, schedules of fittings and finishes.

Stage 5 (Manufacturing and Construction): the architect administers the building contract, issues instructions to the contractor, values work for payment, and reviews progress.

Stage 6 (Handover): practical completion, snagging review, and handover of the completed building to the client.

Stage 7 (Use): post-occupancy evaluation.

For a typical London residential project, architects are most commonly engaged for Stages 1 to 5, though many homeowners use an architect only for Stages 1 to 3 (to design the project and secure planning permission) and then manage the building contract themselves or through a contractor.

In the UK, the title "architect" is protected by law. Only those registered with the Architects Registration Board (ARB) can legally use the title. Membership of the RIBA (denoted by RIBA after the name) is voluntary and indicates professional membership of the architectural body, but does not substitute for ARB registration.

Always check that the professional you are engaging as an architect is ARB-registered (arb.org.uk has a public register). Architectural technicians, architectural designers, and architectural technologists (CIAT members) can produce planning and building regulations drawings but are not registered architects.

Relevant experience: the most important factor. An architect with demonstrated experience in the specific type of work you are commissioning (Victorian terrace extensions, listed building work, contemporary additions to period properties) will navigate the planning system, conservation constraints, and technical challenges more effectively than a generalist.

Portfolio review: review the architect's portfolio before meeting. Look for projects comparable to yours in scale, type, and planning context. Request to see completed projects (not just planning renderings) and ask whether you can visit or speak with previous clients.

Chemistry and communication: you will work closely with your architect for months or years. The relationship requires clear communication, mutual trust, and alignment on values (design quality, budget discipline, programme management). Initial meetings are as much about whether you can work together as about technical capability.

Local knowledge: for projects in conservation areas or listed buildings, an architect with specific knowledge of the relevant London borough's planning policies and conservation officers can make a significant difference to the planning outcome.

Size of practice: small practices (1 to 5 staff) offer greater principal involvement — the person you meet and appoint will likely be the person who runs your project. Larger practices may offer more resource but risk the project being delegated to junior staff.

RIBA directory: the RIBA Find an Architect service (architecture.com) allows searching by specialism and location.

Architectural fees for residential projects in London are typically structured as:

Percentage of construction cost: a percentage of the agreed or tender construction cost, applied to the stages for which the architect is engaged. For residential work in London, typical ranges:

• Full service (Stages 1 to 6): 10 to 15% of construction cost for projects under £500,000
• Smaller or simpler projects: 12 to 18%
• Planning only (Stages 1 to 3): approximately 5 to 8% of construction cost

Fixed fee: agreed in advance for a defined scope. Provides certainty for the client. More common for straightforward projects or for defined stages.

Hourly rate: sometimes used for early feasibility work or additional services beyond the agreed scope. Senior architect time in London: £120 to £250/hour.

Example fees for a single-storey rear extension in London (construction cost £100,000):

• Full architectural service Stages 1 to 5: approximately £12,000 to £18,000
• Planning service only Stages 1 to 3: approximately £5,000 to £8,000

The architectural appointment (contract) should clearly specify:

• Scope of services (which RIBA stages, what is included and excluded)
• Fee and payment terms
• Programme (indicative timescales for each stage)
• Client responsibilities (providing information, making decisions, approvals)
• Copyright of drawings (the client typically has a licence to use the drawings for the project; copyright remains with the architect)
• Professional indemnity insurance (confirm the architect holds adequate PI cover for the value of the project — minimum £500,000 for most residential projects, more for high-value schemes)
• Dispute resolution

The RIBA publishes standard appointment forms for residential projects (the RIBA Concise Professional Services Contract for Architectural Services) which are widely used and appropriate for typical London residential commissions.

Concept design review: at Stage 2, expect to receive sketch options or a preferred concept, possibly with 3D visualisations or model. This is the critical decision point — the conceptual direction agreed here drives the rest of the design. Take time to review and provide thorough feedback.

Planning submission: at the end of Stage 3, the architect submits the planning application and manages communications with the planning officer. Expect consultation periods, possible objections, and potentially a negotiation period before consent is granted.

Technical drawings: at Stage 4, detailed drawings and specifications are produced. These are the documents the contractor prices from and builds to. Their quality and completeness directly affects the accuracy of tenders and the number of variations during construction.

Contract administration: during construction (Stage 5), the architect issues formal instructions, reviews and certifies payment applications from the contractor, and reviews any variations or contractor queries. Their role is neutral — protecting the interests of neither client nor contractor, but ensuring the contract is properly administered.

For very simple, standardised projects (like-for-like window replacement, a small outbuilding from a kit supplier, a straightforward kitchen replacement with no structural work), a specialist contractor, kitchen designer, or architectural technician may be sufficient and more cost-effective.

The investment in an architect is most justified where: design decisions are complex and important; planning constraints are significant; the project involves structural alteration or multiple trades; or the quality of the finished result is important to the homeowner's life and to property value.