Renovation projects: what to agree before work starts

Planning a renovation is exciting, but even smaller projects can lead to disputes or delays if the details are not agreed in advance. Writing down exactly what is included, how unknowns will be handled, and who is responsible for each part of the work helps avoid misunderstandings and keeps everyone on the same page.

Write a detailed scope and specification

The starting point for any renovation is a clear, written schedule of works. This sets out exactly what will be done in each room or area, what finishes you expect, and who will supply each fitting or appliance.

• Go room by room. For each space, list the work to be done (such as knocking down a wall, fitting a new kitchen or replastering) and the finish you want (for example, paint colour, type of flooring or tile pattern).
• Be specific about fittings and fixtures. Note who is responsible for supplying baths, taps, doors, light fittings and appliances. If you are providing any items yourself, confirm when and how these need to be on site.
• Include details such as skirting boards, sockets, radiators and door handles. Small items can be overlooked, so it helps to go through each room and check what needs replacing or keeping.
• Agree on the standard of finish. If you want a particular brand or model, specify it. If you expect certain features (like flush window reveals or a particular paint), include these in writing.
• Ask the builder to review and confirm your schedule of works before you sign anything. Both sides should have a copy of the agreed document.

You can compare renovation experience and services offered by local builders side by side using Annuvell Local’s builders category listings and the compare tool.

Clarify how unknowns and discovery risk are managed

Older houses and flats often hide surprises behind walls and under floors. Common issues include damp, timber rot, asbestos, and outdated wiring or plumbing. Because these cannot always be seen at the start, you and your builder should set out how such discoveries will be handled.

• Agree in writing that any extra work needed due to hidden problems must be priced and approved before it starts. For example, if rotten joists are found, the builder should provide a written estimate for the extra work, and you should sign off before they proceed.
• Clarify how quotations or estimates will be adjusted if discovery work is needed. Some builders may suggest a contingency allowance for likely risks, but you still need to agree how each item will be costed and approved.
• Record the process for handling delays caused by discovery work. If extra time is needed, make sure this is discussed and confirmed in writing.
• Ask about what happens if the builder finds issues they are not qualified to fix (for example, asbestos removal or specialist damp treatment). Check who arranges the specialist and how this is paid for.

A careful conversation about discovery risk at the outset avoids misunderstandings if the project uncovers something unexpected.

Set out site practicalities in advance

Renovations can disrupt your daily routine, especially if you are living on site. Practical arrangements should be discussed and written down before work begins.

• Confirm working hours and days. Set clear start and finish times, including whether work will continue at weekends or bank holidays.
• Discuss access and parking. Agree where workers will park, how they will access the property, and any restrictions in the area.
• Plan for storage of materials and tools. Ask where deliveries will be kept and whether any part of your home will be used for storage. Clarify how the site will be secured at the end of each day.
• Dust and protection measures. Renovation creates dust and mess. Ask what the builder will do to protect floors, furniture and any rooms not being worked on. If you have allergies or sensitive equipment, flag this early.
• Welfare and facilities. If workers need access to toilets, water or a break area, agree which facilities can be used. For larger projects, portable toilets or welfare units may be brought on site.
• Keys and security. If you will not always be present, discuss key handover, alarm codes and how the property will be locked up. Write down who holds keys and when they will be returned.

Practical details are as important as the building work itself for keeping the project running smoothly.

Decide how you will communicate during the project

Clear communication prevents confusion and helps you keep track of changes and decisions. Before work starts, decide with your builder how you will stay in touch and who is responsible for updates.

• Choose a single point of contact on both sides. This is usually the project manager, builder or main tradesperson, and you or a named representative for your household.
• Arrange regular updates. Weekly site meetings or catch-up calls can help you keep track of progress and raise questions before they turn into problems. Note how updates will be shared (in person, by phone, email or messaging app).
• Record all decisions and changes in writing. Even small changes should be written down and agreed. If you ask for an extra socket or change a paint colour, request written confirmation of any effect on cost or timing.
• Keep a project file or email chain. This makes it easier to refer back to what was agreed if there is any dispute.

The simplest communication plan is usually the most effective—one contact, regular updates, and every change written down.

Confirm money, paperwork and legal points

Renovation projects involve several layers of paperwork and legal protection. Agreeing these details before work starts can save stress later.

• Use a written contract. This should set out the agreed scope of work, start and finish dates, payment stages, and what happens if either side wants to change something. Under the Consumer Rights Act 2015, services must be provided with reasonable care and skill.
• Payment stages. Confirm when payments are due (for example, deposit, after demolition, after plastering, on completion) and what each payment covers. Never pay for all work in advance.
• Variations in writing. If the scope changes, ask for a written variation with a price before the work is carried out. This protects both parties.
• Cooling-off period. For contracts agreed at home, by phone or online, a 14-day cooling-off period usually applies. If you ask for urgent work to start within this time, you can still be charged for the work done so far.
• Certificates for electrical and gas work. Any electrical or gas work must be certified the same way as for standalone jobs. Ask for proof of Part P compliance for electrics, and Gas Safe certification for gas work. Keep these certificates, as you may need them if you sell or let the property.
• Warranties and guarantees. Clarify what, if any, warranties are provided for the work and materials. Get these in writing, along with any manufacturer guarantees for boilers, windows or other supplied items.

For more detail on building quotes and the questions to ask, see What should be included in a building quote? and Questions to ask before hiring a builder.

Compare builders based on renovation experience

Not all builders take on the same types of renovation projects, and experience with similar properties can make a difference. When you compare listings on Annuvell Local, look at:

• Whether renovations are listed as a service. This appears as a comparison fact on builders’ listings, making it easier to shortlist those who handle similar projects.
• How contact details are verified. Annuvell Local checks details and flags unreachable websites, so you can see at a glance if a business is actively trading.
• The Verified badge. This confirms the business has completed an ownership check, helping you avoid unverified traders.
• Side-by-side comparisons. Use the compare tool to check how different builders describe their renovation services, what is verified, and what is not stated.

You can send your schedule of works to several builders at once using the Request Quote feature, streamlining your search for the right team.

Next steps

Write down a detailed schedule of works, including room-by-room tasks and who supplies each fitting or finish. Talk through discovery risks, site arrangements and communication before agreeing to anything. Then find builders near you, compare renovation experience, and share your scope when you request quotes. For further preparation, read Questions to ask before hiring a builder and What should be included in a building quote?.