How to compare house extension quotes in Newcastle

You have an idea of the extra space you want and have started asking builders for prices. One quote is brief, another runs to several pages, and the totals are quite different. Which one represents the work you actually need?

Before choosing a builder for a house extension in Newcastle, check that each quote is pricing the same project. The cheapest figure is difficult to judge if it leaves you buying finishes, arranging extra trades or paying separately for work you assumed was included.

Give every builder the same starting information

A useful brief explains what the extension needs to achieve. That might be a kitchen where the family can eat together, a separate workspace or a room that connects more comfortably with the garden.

Share the same drawings and specifications with each builder, including their revision dates. If the design is still developing, make that clear. An early budget indication is different from a detailed price for an agreed design.

Explain your priorities too. A finish you can compromise on is different from a layout feature that makes the project worthwhile. Our house extension service outlines the stages involved in taking an extension from assessment to completed space.

Check where the building work stops

An extension is more than foundations, walls and a roof. The scope also needs to explain how the new space connects to the existing house and what condition each room will be left in.

Connections to the existing property

Look for clear treatment of openings, structural alterations, changes to existing services and making good around the work. Ask whether decorating or flooring in affected existing rooms is included. A new opening can create finishing work beyond the extension itself.

Fixtures and final finishes

Check whether the quote includes supplying and fitting the kitchen, bathroom fittings, flooring, lighting and internal doors where relevant. Supply only and installation only are different scopes. If you are supplying items yourself, agree who checks measurements and when deliveries need to arrive.

Outside space and access

Discuss material deliveries, storage, waste removal and access to the back of the property. If access is through the house or along a shared route, make that known early. Also ask whether disturbed paving, steps or garden areas will be reinstated.

Understand allowances and exclusions

An allowance is money set aside for something that has not yet been fully specified. Ask what it covers and how the final amount will be calculated. A modest allowance can make a headline total look attractive while leaving you with a larger bill when choices are confirmed.

Request a clear list of exclusions. Also check whether VAT is included in the total where applicable, and whether professional fees, application fees or other separately arranged items sit outside the building price.

Ground conditions and concealed parts of an existing building can create uncertainty. Ask what assumptions the quote uses and how additional work would be explained, priced and agreed before proceeding.

Compare the working arrangements

A written programme helps you understand the order of work, but discuss what could affect it. Decisions, material availability and unexpected findings can all alter the sequence.

Agree who your contact will be and how decisions are recorded. Ask about arrangements for dust, security, temporary kitchen facilities and periods when parts of the home may be unavailable. Do not assume you can live normally throughout every stage.

Check that the payment schedule relates clearly to the agreed work. Keep the quote, specification and any agreed changes together so everyone is working from the same information.

Clarify approvals before agreeing a start

Planning permission and building regulations approval are separate matters. Establish which approvals the design needs and who will arrange them. A price for building work should not be taken as confirmation that the required approvals are already in place.

For an overview, see the government's guidance on building regulations approval. Your designer and the relevant authorities can clarify the requirements for your property.

Common questions

Can I request a quote before I have drawings?

You can start a conversation about feasibility and budget. However, a detailed comparison becomes more reliable once builders have the same sufficiently developed design and specification to price.

Should I automatically reject the lowest quote?

No. Ask why it differs. A clear quote with an efficient approach may be competitive, while a low total with missing work is a different proposition. Compare what is included and how uncertainties are handled.

Discuss your extension plans

If you are exploring an extension, send us your location, priorities and any drawings already prepared. Learn more about our building work in Newcastle upon Tyne, or discuss your extension project with J T Cuthbert Ltd.