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House Extensions Edinburgh

Create the extra space your home needs, with the extension built from the agreed design, structural information and approvals.

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★ 4.9/5 · 130+ combined reviews across Google and Edinburgh Trusted Trader · Written quote before work starts

Extension design concept showing glazed doors and a warm timber soffit on a stone house
Extension design inspiration

Scope and planning cost

Indicative budget. £30,000–£132,000 including VAT for an Edinburgh house extension. This is a broad guide, not a quotation or a price promise for any particular extension type or feature.

You appoint the architect, structural engineer and approval professionals. Sweet Homes is the construction contractor; required approvals must be in place before work starts.

A written quotation follows assessment of the property, approved information, agreed scope and selected specification.

Who handles the building warrant for an extension?

You appoint the architect, structural engineer and approval professionals. Sweet Homes is the construction contractor; required approvals must be in place before work starts.

Scope, programme and quotation details

You appoint the building-warrant route and any planning or listed-building advice the property needs, and your appointed professional establishes which applications apply. Your architect owns the design and your structural engineer supplies the structural information. We price the work the approved information describes, and where a warrant is needed it must be granted before works start.

Floor area is easy to see on a drawing. The awkward work often sits at the junction: an existing drain below the proposed footprint, the route for heating and electrics, ventilation that still needs a path, or the point where the household loses use of part of the house.

We want those conditions visible before the quotation is treated as a construction price. A rough sketch is useful for the first conversation, but it leaves too much unresolved for foundations, structure, openings and services.

Your architect owns the design. Your structural engineer supplies the structural information. You appoint the building-warrant route and any planning or listed-building advice needed for the property. We read that information as the contractor and price the work it describes.

Sweet Homes can then coordinate the construction work in one written scope: site setup and protection, groundworks, drainage, structure, walls and roof, windows and external doors, internal services, plastering, flooring, decoration and fitted joinery where included. Electrical and gas work is carried out and certified through the competent trades we appoint.

We won’t fold an architect, engineer or warrant appointment into our role simply because their drawings are needed on site.

Space, structure and finishing details.

An extension should improve how the home works. Consider the new room alongside circulation, daylight, storage and the spaces already there.

Refurbishment work in Edinburgh

Sweet Homes photographs from Edinburgh refurbishments. Extension photographs are added as projects complete and clients agree to them.

House extension budgets in Edinburgh

Indicative budgets are £30,000–£132,000 including VAT.

This is a broad guide, not a quotation or a price promise for any particular feature or design. The final price depends on the measured property, existing conditions, agreed scope and selected specification. A written quotation follows assessment of those details.

For wider context, see the Edinburgh house extension cost guide.

See our Edinburgh renovation cost guide for wider budgeting context.

Tell us about your project

Stage, timing and budget are optional for your first enquiry.

Tell us about your extension

Staying in the house

Many households stay while the new shell is separate from the existing rooms. Project size isn’t the useful threshold. Essential services are.

The difficult stretch may arrive when the opening is formed, or when rewiring, extensive plumbing or heating work affects the occupied rooms. We discuss that before site work and may recommend timing a holiday over it. Temporary services, clean and dirty zones, and any promise about daily availability belong in the particular contract.

Ask about the extension and the house

Extending is one way to find space and not always the cheapest. Loft conversions build into the roof and garage conversions reuse a structure that already exists, both usually with less groundwork than a new footprint. Where the property is listed, listed building renovation covers the consent route an extension there has to clear first.

House extension planning guides

Use the extension cost guide to frame the brief, then establish the design and approval position with your appointed professionals.

House extension questions

We supply and fit every job. We do not offer labour-only work and we do not offer fit-only work, because one firm owning both the materials and the workmanship gives you one clear line of responsibility. The whole sequence, from first call to handover, is set out on how we work.

How much does an extension cost in Edinburgh?

Indicative budgets are £30,000–£132,000 including VAT. This broad range is not a quote or a price promise for a particular design or feature. The measured property, approved information and agreed scope determine the written quotation.

Do I need planning permission and a building warrant?

An extension raises both questions, and they are answered separately. You appoint the building-warrant route and any planning or listed-building advice the property needs, and the appointed professional establishes which applications apply. Sweet Homes reads the approved information as the contractor and prices the work it describes.

Is a sketch enough to get a price?

It is useful for the first conversation, but it leaves too much unresolved for foundations, structure, openings and services. The awkward work usually sits at the junction with the existing house: a drain below the proposed footprint, the route for heating and electrics, ventilation that still needs a path. We want those conditions visible before a quotation is treated as a construction price.

Can we stay in the house while it is built?

Many households stay while the new shell is separate from the existing rooms. Project size is not the useful threshold; essential services are. The difficult stretch usually arrives when the opening is formed, or when rewiring, plumbing or heating work reaches the occupied rooms. We discuss that before site work starts.

How soon can the work start?

For major projects, allow at least four weeks from your first enquiry. Tell us what you need and when. That period covers the call, the survey, the written quotation, your decision and the ordering that has to happen before trades arrive. If something needs attention sooner than that, say so on the call and we will point you to the right emergency trade for the immediate problem while the planned work is scheduled properly.

What happens after we enquire?

Send your enquiry by form or email. We will reply and arrange a follow-up call to talk through the project. Any site visit is arranged afterwards, where useful.

Why do you not offer labour-only work, or fit materials we buy ourselves?

No. We supply and fit every job, whatever its size. We do not offer labour-only work and we do not offer fit-only work. When one firm buys the materials and carries out the work, you have one clear line of responsibility if something goes wrong, rather than an argument between the product and the fitting. If you have already chosen products, send the product codes and we will buy those exact items and include them in the quotation.

Tell us about your extension

Tell us your general area and the extra space you need and whether drawings or permissions have started. Plans, measurements and a settled budget can follow. Send your enquiry by form or email. We will reply and arrange a follow-up call to talk through the project.

A general area is enough. Please do not enter your full address yet.

Stage, timing and budget (optional)

Share these details if you know them, or leave them for our first reply.

These answers help us assess fit. They do not reserve a start date or amount to a quotation. For major projects, allow at least four weeks from your first enquiry. Smaller or urgent work may be possible sooner; dates are agreed separately.

Send your enquiry by form or email. We will reply and arrange a follow-up call to talk through the project. We use your details to reply and handle the service you request. Privacy policy.

Project responsibility

Who manages the work

Brunon oversees project programmes across Edinburgh and is typically available by phone or email. The staff assigned to your job handle the day-to-day site work independently within the agreed scope, with the responsible contact confirmed before work starts.

Customer feedback

Independent reviews, clearly sourced

4.9/5 from 130+ combined reviews

Google and Edinburgh Trusted Trader

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