Question 1

What areas does Grand Innovations cover?

Accepted Answer

We serve homeowners across Surrey and South West London, including Guildford, Woking, Epsom, Reigate, Cobham, Dorking, Farnham, Camberley, Leatherhead, Esher, Wandsworth, Richmond, Kingston, Southwark, and Wimbledon.

Question 2

What is the cheapest way to add space to a house in Surrey?

Accepted Answer

A garage conversion is typically the most cost-effective way to add living space, starting from around £15,000. Rear extensions and loft conversions are also excellent options. The best choice depends on your property layout and local planning constraints.

Question 3

What is weekly billing in construction and why is it better?

Accepted Answer

Weekly billing means you pay only for work that has been completed, inspected, and signed off each week. Unlike traditional builders who demand large upfront deposits, our model gives you full financial control and eliminates the risk of paying for unfinished work.

Question 4

How does Grand Innovations' payment structure work?

Accepted Answer

We take a 10% deposit three weeks before the start date, then issue weekly valuations for completed work. Every payment is tied to visible, signed-off progress. No large stage payments and no hidden charges at any point in the project.

Question 5

Do I need to move out during a home renovation?

Accepted Answer

In most cases, no. We plan and manage projects to minimise disruption. For major renovations such as full house refurbishments, temporary arrangements for kitchens or bathrooms may be needed. We discuss logistics during the planning stage.

Question 6

Does Grand Innovations handle planning permission?

Accepted Answer

Yes, we manage the entire planning process including architectural designs, planning applications, structural engineering, and building regulations compliance. We work with local councils across Surrey and London on your behalf.

Question 7

How long does it take to get planning permission in Surrey?

Accepted Answer

Standard planning applications in Surrey typically take 8 to 13 weeks for a decision. Permitted Development prior approval takes around 6 to 8 weeks. Grand Innovations manages the full application process and can often start preparatory work beforehand.

Question 8

What accreditations does Grand Innovations hold?

Accepted Answer

We are members of the Federation of Master Builders (FMB), listed on Checkatrade with verified reviews, and rated on Bark, Google, and Trustpilot. All our work is fully insured and building regulations compliant.

Question 9

How much does a home extension cost in Surrey?

Accepted Answer

Home extension costs in Surrey typically range from £40,000 to £120,000 depending on size, specification, and complexity. We provide detailed, transparent cost proposals before any work begins, so you know exactly what to expect.

Question 10

How long does a home extension take in the UK?

Accepted Answer

A single-storey rear extension usually takes 10 to 14 weeks from foundation to completion. Double-storey and wrap-around extensions take 16 to 24 weeks. We provide a detailed project timeline during the proposal stage.

Question 11

Do I need planning permission for a rear extension?

Accepted Answer

Many single-storey rear extensions fall under Permitted Development and don't require planning permission. This depends on your property type, location, and the size of the extension. We confirm the position during our free initial assessment.

Question 12

What types of extensions can be built under Permitted Development?

Accepted Answer

Under Permitted Development, you can typically build single-storey rear extensions up to 3 metres (attached houses) or 4 metres (detached). Side extensions up to half the width of the original house are also usually permitted. Conservation areas have additional restrictions.

Question 13

What is a wrap-around extension?

Accepted Answer

A wrap-around extension combines a rear and side-return extension into one L-shaped structure. It maximises the additional floor space and is popular with Victorian and Edwardian terraced houses. They typically add 20 to 40 square metres of living space.

Question 14

Do I need planning permission for a loft conversion in London?

Accepted Answer

Most loft conversions in London fall under Permitted Development and don't require full planning permission. Exceptions include flats, maisonettes, conservation areas, and conversions that exceed volume limits. We handle all planning considerations on your behalf.

Question 15

How much does a loft conversion cost in Surrey in 2025?

Accepted Answer

Loft conversions in Surrey typically cost between £35,000 and £65,000 in 2025, depending on the type (Velux, dormer, hip-to-gable, or mansard) and specification. We provide a detailed, transparent cost breakdown before any work begins.

Question 16

What types of loft conversion are available?

Accepted Answer

The main types are Velux (rooflight), dormer, hip-to-gable, and mansard conversions. The best option depends on your existing roof structure, headroom, and planning constraints. We assess your roof during a free initial consultation.

Question 17

How long does a loft conversion take to complete?

Accepted Answer

A standard loft conversion typically takes 6 to 10 weeks from start to completion. More complex mansard conversions may take 10 to 14 weeks. The work mostly takes place from the outside, minimising disruption to your daily life.

Question 18

Will a loft conversion add value to my home?

Accepted Answer

Yes, a well-executed loft conversion typically adds 15 to 20 percent to your property value. In Surrey and London, where property values are high, this can represent a substantial return on investment compared to the conversion cost.

Question 19

How much does a garage conversion cost in Surrey in 2025?

Accepted Answer

Garage conversion costs in Surrey range from £15,000 to £35,000 depending on size, condition, and specification. This includes structural modifications, insulation, electrics, flooring, and finishing. We provide a full breakdown before work begins.

Question 20

Do I need planning permission for a garage conversion?

Accepted Answer

Most garage conversions are classed as a change of use and fall under Permitted Development, meaning planning permission is usually not required. However, building regulations approval is always needed. We manage the entire compliance process.

Question 21

How long does a garage conversion take?

Accepted Answer

A standard single garage conversion takes approximately 3 to 5 weeks to complete. Double garage conversions or those requiring significant structural work may take 5 to 8 weeks. We provide a detailed timeline during the proposal stage.

Question 22

What can I convert my garage into?

Accepted Answer

Popular garage conversion options include home offices, gyms, cinema rooms, playrooms, additional living rooms, self-contained annexes, and bedrooms with en-suites. We design the space to match your requirements and your property's style.

Question 23

How much does a full house renovation cost in the UK?

Accepted Answer

Full house renovations typically cost between £800 and £1,500 per square metre, depending on specification. A comprehensive renovation of a 3-bedroom house in Surrey or London may range from £60,000 to £150,000. We provide a detailed proposal before work begins.

Question 24

How long does a bathroom renovation take?

Accepted Answer

A standard bathroom renovation typically takes 2 to 3 weeks. A complete redesign including moving plumbing, structural changes, or creating an en-suite may take 3 to 5 weeks. We manage all trades including plumbing, tiling, and electrics.

Question 25

Can Grand Innovations renovate period properties?

Accepted Answer

Yes, we specialise in sympathetic renovation of period properties across Surrey and London. We preserve original features such as cornicing, fireplaces, and sash windows while modernising interiors for contemporary living. All heritage requirements are carefully managed.

Question 26

What is included in a full house refurbishment?

Accepted Answer

Our full refurbishments typically include kitchen and bathroom renovation, rewiring, replumbing, plastering, flooring, decoration, and any structural modifications. We manage the entire project from design and planning through to completion and snagging.

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