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, followed by rear extensions and loft conversions. The best choice depends on your property layout, how you want to use the space, and local planning constraints — we'll advise on the most cost-effective route at a free consultation.

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 depend on the size, specification, and complexity of the project. We provide a detailed, transparent, itemised cost proposal before any work begins, so you know exactly what to expect — book a free consultation for a tailored figure.

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

The cost of a loft conversion depends on the type (Velux, dormer, hip-to-gable, or mansard) and specification. We provide a detailed, transparent cost breakdown before any work begins — book a free survey for a tailored cost proposal.

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

What structural work is involved in a loft conversion?

Accepted Answer

Most loft conversions require new floor joists to meet building regulations, steel beams for structural support, and modifications to the existing roof structure. A dormer or mansard conversion involves cutting into and rebuilding sections of the roof. We handle all structural engineering calculations and building regulations submissions.

Question 20

Do I need building regulations approval for a loft conversion?

Accepted Answer

Yes, all loft conversions require building regulations approval regardless of whether planning permission is needed. This covers structural integrity, fire safety (including a protected staircase), insulation, electrics, and glazing. Grand Innovations manages the full building regulations process on your behalf.

Question 21

How much disruption will a loft conversion cause to my daily life?

Accepted Answer

Most of the structural and external work is carried out from scaffolding without major disruption. Internal work such as staircases, plastering, and electrics will require some adjustment to daily routines. A typical dormer conversion takes 6 to 10 weeks. We plan the programme to minimise inconvenience and keep you informed at every stage.

Question 22

What is the difference between a dormer and a hip-to-gable loft conversion?

Accepted Answer

A dormer conversion extends outward from the existing roof slope, creating additional headroom and floor space — ideal for most property types. A hip-to-gable conversion extends the sloping side of a hipped roof to create a vertical gable wall, maximising loft space on semi-detached and detached properties. We assess your roof during a free consultation to recommend the best option.

Question 23

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

Accepted Answer

Garage conversion costs depend on size, condition, and specification — covering structural modifications, insulation, electrics, flooring, and finishing. We provide a full, itemised breakdown before work begins; book a free survey for a tailored cost proposal.

Question 24

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 25

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 26

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 27

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

Accepted Answer

Full house renovation costs depend on the size of the property and the specification. We provide a detailed, itemised proposal before work begins so there are no surprises — book a free consultation for a tailored figure.

Question 28

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 29

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 whilst modernising interiors for contemporary living. All heritage requirements are carefully managed.

Question 30

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.

Question 31

How much does a new bathroom cost in Surrey?

Accepted Answer

Bathroom renovation costs depend on the size of the room, the quality of fixtures, and the complexity of the work. We provide an itemised quotation before starting — book a free consultation for a tailored figure.

Question 32

What is wet room tanking and do I need it?

Accepted Answer

Wet room tanking is a waterproofing system applied to the floor and walls of a wet room to prevent water leakage into the structure below. It uses specialist membranes and sealants to create a fully watertight enclosure. Tanking is essential for any wet room installation and must comply with BS EN 14527 standards. We include it as standard in all wet room projects.

Question 33

Can you install underfloor heating in a bathroom?

Accepted Answer

Yes, underfloor heating is one of our most popular bathroom upgrades. Electric underfloor heating mats are ideal for bathrooms as they are slim, easy to install beneath tiles, and can be controlled independently with a dedicated thermostat. We recommend it for virtually every bathroom project — it adds luxury and helps reduce condensation.

Question 34

How long does a complete bathroom renovation take?

Accepted Answer

A standard bathroom renovation typically takes 2 to 3 weeks. Projects involving structural changes, new plumbing runs, or wet room conversions may take 3 to 5 weeks. We coordinate all trades — plumbers, electricians, tilers, and decorators — to minimise downtime and disruption.

Question 35

Do you supply bathroom fixtures or can I choose my own?

Accepted Answer

Both. We work with premium brands including Duravit, Hansgrohe, Villeroy & Boch, and Porcelanosa and can source fittings on your behalf, often at trade prices. Alternatively, you are welcome to supply your own fixtures and we will install them to the manufacturer's specifications.

Question 36

How much does a new kitchen cost in Surrey?

Accepted Answer

The cost of a new kitchen depends on its size, cabinetry quality, worktop material, and appliance specification, plus any structural work such as wall removal or extensions. We provide a fully itemised quotation before any work commences — book a free design consultation for a tailored figure.

Question 37

How long does a kitchen installation take?

Accepted Answer

A straightforward kitchen replacement typically takes 2 to 3 weeks. Projects involving structural changes, rewiring, replumbing, or new flooring may take 4 to 6 weeks. We schedule the work to minimise the time you are without cooking facilities and can provide temporary arrangements where needed.

Question 38

Can you remove a wall to create an open-plan kitchen?

Accepted Answer

Yes, this is one of our most requested kitchen projects. We assess whether the wall is load-bearing, commission structural engineering calculations if needed, install steel beams, and remove the wall to create a seamless open-plan kitchen-living-dining space. All work is fully compliant with building regulations.

Question 39

What worktop materials do you recommend?

Accepted Answer

We install a full range of worktop materials including quartz (Silestone, Caesarstone), granite, Dekton, Corian, and solid wood. Quartz is the most popular choice for its durability, low maintenance, and wide colour range. We can arrange showroom visits and samples to help you decide.

Question 40

Do you handle kitchen electrics and plumbing?

Accepted Answer

Yes. Every kitchen installation includes full electrical and plumbing work carried out by qualified, certified tradespeople. This covers repositioning sockets and switches, installing new lighting circuits, connecting appliances, and rerouting water and waste pipes as needed. All work is Part P compliant and signed off.

Question 41

What structural modifications can you carry out?

Accepted Answer

We carry out a wide range of structural work including load-bearing wall removal, steel beam installation, underpinning, foundation work, chimney breast removal, and roof structure modifications. All structural work is designed by a qualified structural engineer and fully compliant with building regulations.

Question 42

Can you build a detached garden room or annexe?

Accepted Answer

Yes, we design and build detached garden rooms, home offices, and self-contained annexes. Many fall under Permitted Development, though some require planning permission depending on size and use. We handle the full process from design and planning through to foundation work, construction, and finishing.

Question 43

Do you carry out groundworks and drainage?

Accepted Answer

Yes, our construction team handles all groundworks including excavation, foundation preparation, drainage installation, and connection to mains services. We also carry out land drainage, soakaways, and surface water management as part of new-build and extension projects.

Question 44

What types of brickwork do you offer?

Accepted Answer

We offer all types of brickwork including new-build walls, extensions, garden walls, retaining walls, chimney repair, repointing, and decorative brick features. We carefully match existing brickwork on period properties to maintain visual continuity and architectural character.

Question 45

How do you ensure structural work meets building regulations?

Accepted Answer

All structural work is designed by a chartered structural engineer and submitted to building control for approval before construction begins. We arrange all building control inspections throughout the project and obtain sign-off certificates upon completion. This ensures full compliance and protects your investment.

Question 46

What is internal remodelling and how does it differ from renovation?

Accepted Answer

Internal remodelling involves changing the layout of your home — removing or relocating walls, reconfiguring rooms, moving staircases, and rerouting services. Renovation focuses more on updating and improving existing spaces without altering the fundamental layout. Remodelling is a more structural undertaking and typically requires a structural engineer.

Question 47

Can you remove a load-bearing wall?

Accepted Answer

Yes. We regularly remove load-bearing walls to create open-plan living spaces. The process involves a structural engineer designing a supporting steel beam, temporary support being installed, the wall being removed, and the steel beam being installed and finished. Building regulations approval is required and we manage the entire process.

Question 48

How much does internal remodelling cost?

Accepted Answer

Costs vary significantly depending on scope — from a single load-bearing wall removal with a steel beam through to a full internal reconfiguration of an entire property. We provide a detailed, itemised quotation after a site survey, so you have a clear figure before committing.

Question 49

Can you relocate a staircase?

Accepted Answer

Yes, staircase relocation is a specialist part of internal remodelling. It involves significant structural work including new floor openings, trimmer beams, and building regulations compliance for headroom, pitch, and fire safety. We design bespoke staircases to suit your property's style and the new layout.

Question 50

Do I need to move out during internal remodelling?

Accepted Answer

For major remodelling projects involving multiple rooms, rewiring, and replumbing, it may be more practical to move out temporarily. For smaller projects such as a single wall removal, you can usually remain in the property. We discuss logistics during the planning stage and work to minimise disruption.

Question 51

What is a smart home system?

Accepted Answer

A smart home system allows you to control your home's lighting, heating, security, and entertainment from a single interface — whether that is a smartphone app, voice assistant, wall-mounted panel, or automated schedule. Grand Innovations installs systems that are discreet, reliable, and tailored to your lifestyle.

Question 52

Can you install smart home technology in a period property?

Accepted Answer

Absolutely. We specialise in discreet installations that preserve the character of period properties. Wiring is concealed within walls, skirting boards, and ceiling voids. Smart switches and panels are available in heritage-style finishes to complement traditional interiors.

Question 53

Which smart home platforms do you work with?

Accepted Answer

We work with leading platforms including Control4, Lutron, Sonos, Philips Hue, Ring, Nest, and Apple HomeKit. We recommend systems based on your requirements, budget, and existing infrastructure, and ensure everything integrates seamlessly.

Question 54

How much does home automation cost?

Accepted Answer

Costs range from a basic smart lighting and heating package through to a comprehensive whole-house system with multi-room audio, CCTV, motorised blinds, and integrated AV. We provide a detailed specification and quotation after an initial consultation.

Question 55

Can smart home systems be added during a renovation or extension?

Accepted Answer

Yes, and this is the ideal time to install them. Running cabling during the build phase is significantly cheaper and less disruptive than retrofitting. We design smart home infrastructure as part of the project planning, future-proofing your property with concealed wiring and accessible control points.

Question 56

What is a design and build service?

Accepted Answer

A design and build service combines architectural design, structural engineering, planning management, and construction under one contract and one team. This single-point approach eliminates the complexity of managing separate professionals and ensures seamless coordination from concept to completion.

Question 57

What are the advantages of design and build over separate contracts?

Accepted Answer

Design and build offers several advantages: a single point of accountability, faster project delivery (design and construction phases can overlap), better cost control (the builder understands the design from day one), and fewer coordination issues between trades. It is particularly effective for complex projects.

Question 58

Do you provide architectural drawings?

Accepted Answer

Yes. Our design and build service includes full architectural drawings, technical specifications, and 3D visualisations. We also produce planning application documents and structural engineering drawings. All design work is carried out by qualified professionals and tailored to your brief.

Question 59

How does the design and build process work?

Accepted Answer

The process begins with a free consultation to understand your requirements and budget. We then produce architectural concepts, develop detailed drawings, submit planning applications if needed, commission structural engineering, and proceed to construction — all managed by a single project team. You have one point of contact throughout.

Question 60

Is design and build more expensive than managing separately?

Accepted Answer

Not typically. The integrated approach often saves money by eliminating design-construction conflicts, reducing delays, and enabling value engineering. You also avoid the cost and hassle of coordinating multiple contracts. We provide a transparent, all-inclusive quotation so there are no surprise costs.

Question 61

How much do solar panels cost to install in Surrey?

Accepted Answer

The cost of a residential solar PV system depends on its size and your roof. Most systems pay for themselves over time through energy savings and Smart Export Guarantee payments. We provide a tailored quotation and a clear return-on-investment estimate after a free assessment.

Question 62

What is an air-source heat pump and is it suitable for my home?

Accepted Answer

An air-source heat pump extracts heat from the outside air — even in cold weather — and uses it to heat your home and hot water. It is suitable for most properties, particularly those with good insulation. The UK government's Boiler Upgrade Scheme offers grants towards installation costs. We assess suitability during a free consultation.

Question 63

Can renewable energy be integrated into a renovation project?

Accepted Answer

Yes, and this is often the most cost-effective approach. During a renovation or extension, we can upgrade insulation, replace windows, install underfloor heating (ideal for heat pumps), and add solar panels at a reduced marginal cost compared to standalone installations. We design the energy strategy as part of the overall project.

Question 64

What government grants are available for renewable energy?

Accepted Answer

The Boiler Upgrade Scheme provides grants towards air-source and ground-source heat pumps, and the Smart Export Guarantee pays you for surplus solar electricity exported to the grid. We help you navigate available incentives and factor them into your project planning.

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