Four details make the first insurance conversation more useful: the work, the dates, whether you will stay at home and which parts will be exposed. Tell your insurer about significant building work before it starts, rather than waiting for the first delivery. The National Home Improvement Council warns that ordinary home cover may be insufficient during a renovation. For a Rugby extension, prepare a short written brief and ask for a policy-specific response. A builder's quotation, planning decision or insurance certificate does not answer every question about your own cover. This guide helps organise that conversation without recommending a policy.
The short answer
Tell your insurer before building work starts
Contact your home insurer while planning significant building work, including an extension, and explain the scope, dates, occupancy and exposure. Ask it to confirm cover, exclusions and any further requirements in writing before work begins. For a Rugby home, planning permission and building regulations remain separate checks. Your insurer or broker must assess the policy; this guide cannot confirm your cover.
Start with a brief your insurer can actually assess
The insurer needs a description of the proposed work, not simply the word renovation.
Write a concise scope before making the call. Describe whether you are extending the footprint, opening an existing wall, replacing a roof or changing internal rooms. Attach the current drawings if the insurer asks for them. Give the proposal a date or drawing revision so later correspondence refers to the same work.
The NHIC recommends contacting the home insurer during planning and supplying scope, cost and timing. Its November 2025 guide also identifies moving out, exposed parts of the building and items left at the property as questions to raise. Ask how those circumstances affect your particular policy rather than assuming one answer covers every renovation.
Prepare a short call record with the policy reference, date, person or team contacted and documents supplied. Ask for a written reply identifying what has been accepted and any action still needed. Keep it with the project paperwork. A record that you called is useful, but it is different from written confirmation of the relevant cover.
For a Rugby extension, the extension programme guide can help explain stages rather than offering a single hopeful finish date. Tell the insurer which dates are estimates. If design or pricing remains provisional, explain what is undecided and ask when it needs the final information.
Check the guidance: NHIC: insuring your home during works.
Separate the house, the new work and liability
Different insurance descriptions address different risks; ask who is covered and for what.
Use the table below as a question sheet, not a statement that any policy pays a claim. For each row, write down the insurer's answer, the relevant document and any exclusion or unanswered point. The useful result is a documented allocation of responsibility, rather than several people saying that insurance is sorted.
The ABI describes liability insurance as protection against compensation claims involving injury or property damage, subject to the cover. That is a different question from whether your own building and possessions remain protected during construction. Ask the insurer or broker to explain the distinction using the actual policies and the proposed work.
Ask the contractor for current evidence appropriate to the work and send any insurance requirements from the proposed contract to your adviser. Confirm the contracting business name and policy dates. Do not rely on a logo, a verbal assurance or a document belonging to a different company. This is a general checking method, not a claim about any named builder.
Keep the insurance responsibilities beside the agreed scope in your builder quotation checklist. If documents conflict or an important question remains unanswered, obtain clarification before the relevant activity begins. Neither a quotation nor this table can amend an insurer's terms.
| Question | Ask about | Keep as evidence |
|---|---|---|
| Existing house | Protection while alterations are under way | Written acceptance and applicable conditions |
| New construction | Who arranges cover for work in progress | Policy scope and responsible party |
| Injury or damage claims | Relevant contractor liability arrangements | Current evidence and exclusions |
| Contents and stored items | Belongings, materials and storage locations | Insurer response to the actual arrangements |
| Moving out | How planned absence affects cover | Permitted period and required precautions |
Check the guidance: ABI: liability insurance.
Get the insurer response before fixing the start
Notification, acceptance and compliance with conditions are separate things.
Ask the insurer to state whether the existing policy can continue for the work described and what changes would apply. If it needs a specialist assessment or a different arrangement, ask what information is missing and when a decision can be made. Avoid cancelling existing protection before your adviser has explained how the arrangements fit together.
Read any revised schedule and conditions alongside the original policy wording. Highlight requirements you must act on, such as an occupancy arrangement or a security precaution specifically imposed by the insurer. Share relevant practical requirements with the person coordinating construction. Ask who will carry out each task and how you will know it has been done.
An unanswered email is not a reliable start condition. Put an insurance decision point in the project plan before demolition or opening the building. If confirmation has not arrived, ask the insurer and contractor how that affects the proposed start. A supplier booking does not resolve an outstanding policy question.
Keep the discussion factual if the programme changes. Identify the affected activity, proposed new date and what remains exposed. Ask for an updated response where necessary. The rear extension budget guide helps separate the building scope from exclusions; it does not establish the insurance premium or the terms available to you.
Write down the remaining questions
Create a small outstanding-items log: question, person responsible, document needed and date for the next response. Mark an item resolved only when you have an answer you understand. If an insurance term is unclear, ask the insurer or broker to explain it. Guessing what a technical label means can leave different parties working to different assumptions.
Keep Rugby permissions separate from insurance acceptance
A planning decision does not confirm insurance, and insurance does not grant permission to build.
Rugby Borough Council says permitted development rights can be adapted or removed, with different constraints for listed buildings and conservation areas. It also states that building regulations approval may be needed independently of planning permission. Check the property and complete proposal, rather than assuming the rules for a neighbour's extension apply to yours.
Use the Rugby extension permission guide to organise planning questions. GOV.UK explains the separate technical approval route. Ask the designer and building control body about the relevant application and inspections, and keep those responsibilities in the project plan. Supply approval documents to the insurer when requested, without treating them as an insurance decision.
Neighbour matters are another separate discussion. If the work involves a shared wall or excavation near another structure, use the party wall guide to identify what needs professional assessment. Do not assume a planning approval or a public liability certificate resolves notice duties or every possible neighbour-related claim.
For your Rugby home, maintain three distinct records: the planning position, the technical approval position and the insurer's response. Add the adviser or organisation responsible to each. That separation makes it easier to spot what is still missing when somebody asks whether the project is ready to start.
Check the guidance: Rugby Borough Council: property permission checks, GOV.UK: building regulations approval.
Update the brief when the project changes
An earlier insurance response may have been based on a scope or occupancy plan that has changed.
Agree a simple change log before work starts. Record the proposed alteration, why it is needed and its effect on scope, cost, dates, access and occupancy. Ask your insurer or broker which changes it needs to hear about and at what point. Use its answer as the reporting rule for your policy.
Examples to discuss include extending the construction period, moving out after originally planning to stay, or adding structural work not shown on the first drawings. These are prompts for a conversation, not universal policy thresholds. Give the insurer the revised facts and request confirmation of any changed terms before relying on the earlier response.
If the programme covers a roof opening or a temporary boundary between the house and the work, ask the project team to describe the intended arrangements. Relay relevant information accurately rather than promising protection measures you have not agreed. Keep responsibility for construction methods with the appropriate professionals and insurance decisions with the insurer.
Keep costs consistent across documents. State whether building figures include VAT, whether professional fees are separate and which items remain estimates. GOV.UK says most work to existing houses attracts 20% VAT, with exceptions. A hypothetical £1,000 extra excluding 20% VAT totals £1,200. That is arithmetic only, not a Belmax quotation, market rate or insurance premium.
Use one revised version
Give revised drawings and the scope summary the same reference wherever practical. Keep the earlier version as a record, but tell each relevant party which one is current. Before authorising extra work, ask whether further insurance confirmation is needed. Our extension cost comparison guide can help describe the cost boundary without confusing a construction allowance with confirmed cover.
Check the guidance: GOV.UK: VAT for building work.
Close the work and review the completed home
The rebuild figure and the market value of the house answer different questions.
The ABI says the buildings sum insured should reflect rebuilding cost rather than purchase price or current market value. An extension changes the property you need to describe. Ask the insurer or an appropriate adviser how to update the information when the work finishes. Do not substitute an estate agent's sale estimate for a rebuilding assessment.
Prepare a completion folder with the final scope, relevant approvals and certificates, product information, photographs and outstanding items. Ask the insurer when it needs notification that work has finished and whether temporary conditions must be removed or replaced. Keep any final written response with the policy records for the completed home.
If some work remains, describe it accurately. A usable room, contractor handover and completion of every outstanding item can be different milestones. Give the insurer the actual situation rather than choosing the earliest date because it is convenient. Use our extension service page to prepare the building discussion and your own insurer for cover decisions.
For a first conversation with Belmax, supply photographs, your postcode, drawings and a short explanation of the new space. Mention important access or timing constraints. Belmax can discuss the proposed building scope; insurance suitability, exclusions and acceptance must come from your insurer or broker. Keep those two conversations connected through accurate information.
Check the guidance: ABI: buildings cover and rebuilding cost.
What clients say
Recent words from Belmax clients.
Three public five-star review excerpts, checked 24 September 2026.
“We have been really happy with the service from Belmax Builders. They are reliable, professional and, most importantly, always kept to the agreed schedule.”
“Belmax did the job to very high standard, communicated with us the whole time and explained really well what to expect.”
“Job was started on time and Rob kept us up to date every step of the way. The finished conversion looks amazing.”
Frequently asked questions
Do I need to tell my insurer about building work in Rugby?
Tell your insurer before significant building work starts and describe the proposed scope, dates and occupancy arrangements. The NHIC recommends making contact during planning. Ask what information the insurer requires and obtain a written response for your policy. Rugby planning permission and building regulations are separate checks. Neither an approval nor a builder's quotation confirms that your home insurance covers the work you are proposing.
Does the builder's insurance replace my home insurance?
Do not assume it does. Ask your insurer or broker to distinguish cover for the existing house, new work, belongings and liability claims. Request appropriate current evidence from the contractor and check that it relates to the contracting business and proposed activities. A certificate heading alone does not establish every exclusion or responsibility. Keep the written answers with the contract and resolve any gaps before the relevant work begins.
What if I move out during the renovation?
Tell the insurer your proposed absence dates and explain whether the property will be empty throughout or occupied intermittently. Ask how its terms apply, which precautions it requires and what happens if the programme extends. Do not borrow an unoccupied-day limit from another insurer or an online guide. Keep the answer in writing and update the insurer if your living arrangements change during construction at the property.
Will home insurance pay for damage during building work?
That depends on the policy, the circumstances and any conditions agreed for the project. This guide cannot confirm a claim outcome. Ask the insurer which risks remain covered, what exclusions apply and whether it requires further arrangements before construction. Explain the actual work and exposure rather than requesting a general reassurance about renovations. If the response is unclear, ask the insurer or broker to clarify it before relying on it.
What should I do when the extension is finished?
Notify the insurer as agreed and describe the completed property accurately, including any work still outstanding. Ask about updated rebuilding information and any temporary construction conditions. The ABI distinguishes rebuilding cost from sale value, so do not substitute a market appraisal for the figure your policy requires. Keep relevant approvals, certificates and the final insurer response together. A completed extension does not automatically update the information held on your policy.
Sources
Figures, fees and rules change. Every source below was checked on 23 October 2026.
- NHIC: insuring your home during worksPublished November 2025. Notification, occupancy and insurance roles; confirm current policy terms.
- ABI: buildings insuranceRebuilding cost, buildings sum insured and policy information.
- ABI: liability insuranceGeneral explanation of third-party injury and property claims.
- Rugby Borough Council: permission checksProperty restrictions and separate technical approval.
- GOV.UK: building regulations approvalCheck the technical approval route independently of planning.
- GOV.UK: VAT for building workMost work on existing homes attracts standard20% VAT, with exceptions.