Begin with a clear, written brief

Before you contact an architect, spend time writing down what you actually want from the renovation. A brief does not need to be a polished document, but it should set out your priorities. Include practical details: how many bedrooms you need, whether you want open-plan living, where you need storage, how you feel about natural light, and any accessibility requirements for the long term.

Separate your must-haves from your nice-to-haves. If the budget tightens, which items can wait? Gather inspiration images, but annotate them so your architect understands what you like about each one rather than asking for a copy of someone else's home. Mention any constraints you already know about, such as a listed building status, conservation area, right of way, or a neighbour's tree that shades the kitchen. A clear brief saves weeks of design going in the wrong direction.

Set a realistic budget and contingency

Renovation budgets are usually tested first by construction costs, then by professional fees. Ask your architect early on for a rough order of magnitude based on similar projects, but treat any figure as indicative until you have a measured survey and a contractor's pricing. Build in a contingency of at least 10–15% for a straightforward refurbishment, and more for older or listed buildings where hidden defects are likely.

Remember the costs beyond the build: architect's fees, structural engineer, party wall surveyor, planning application fees, building control, SAP or energy assessments, and VAT. If you are extending, the Community Infrastructure Levy may apply in some areas. Be honest with your architect about your total budget, including fees. That allows them to design within your means rather than presenting a scheme you cannot afford to build. A good architect will also advise where money is best spent — often on fabric, insulation and glazing rather than expensive finishes.

Commission surveys before the design is fixed

It is tempting to start sketching immediately, but early investigations prevent expensive surprises. A measured survey of the existing building is the foundation of accurate drawings. If you are altering structure, a structural engineer's report will identify load-bearing walls, lintels and foundations. For older properties, consider a damp and timber survey, an asbestos survey if the building dates from before 2000, and a drainage survey if you plan to move bathrooms or kitchens.

• Measured survey: gives your architect reliable dimensions and levels.
• Structural survey: confirms what can be removed or opened up.
• Damp, timber and asbestos surveys: reveal hidden repair costs.
• Drainage and services: avoid clashes with new extensions or wet rooms.
• Party wall and boundary checks: clarify notices and access rights.

Share every report with your architect as soon as you receive it. They can incorporate the findings into the design and flag items that need specialist input. If a survey reveals a problem, dealing with it at concept stage is far cheaper than discovering it after the contractor has started.

Agree the architect's role, stages and fee

Architects often work to RIBA stages, from initial brief through to completion. Ask which stages are included in the fee and which are optional extras. A typical renovation might involve feasibility, concept design, planning application, technical design, tender, and contract administration. Some homeowners only need help with planning; others want the architect to inspect the work on site and certify payments.

Fees can be a percentage of construction cost, a fixed lump sum, or time-charged. Whichever you choose, get a written scope that lists deliverables, number of site visits, and exclusions. Clarify who is responsible for building regulations submissions, party wall awards, and health and safety duties. If you are comparing architects, compare like for like: a low fee that excludes technical design or site inspections may cost more later. A clear appointment protects both sides and sets expectations for communication.

Collaborate well through design and planning

Good collaboration is about timely decisions. Your architect will present options; give feedback promptly and in writing. If you are part of a couple or a family group, agree a single point of contact so instructions do not conflict. Ask questions if drawings are unclear — it is easier to resolve confusion on paper than on site. Keep a shared folder for drawings, reports, and approvals, and note the date of each decision.

Planning is often the most uncertain phase. Your architect can advise on local policy, listed building consent, and conservation area requirements. They may recommend a pre-application enquiry to test the principle of the scheme. Be prepared for negotiation: planners may ask for changes to scale, materials, or roof form. Once consent is granted, check the conditions carefully and make sure they are discharged at the right time.

Keep the project steady on site

When you move to tender, ask your architect to prepare a clear package so contractors price the same scope. Compare tenders not just on price but on programme, references, and insurance. Before work starts, sign a building contract and agree a payment schedule. Variations are normal in renovation, but they should be instructed in writing and priced before the work proceeds.

Site meetings, even brief ones, keep everyone aligned. Your architect can review progress, answer the contractor's queries, and check that work matches the drawings. Keep a snagging list as you go, and do not release final payment until you are satisfied and any certificates — building regulations, electrical, gas, and warranty — are in hand. With a clear brief, a realistic budget, early surveys, and open communication, the architect–homeowner relationship becomes a productive partnership rather than a source of stress.