Everything you need to know before you build
Search more than 100 straight answers and in-depth guides on planning, costs, timescales and every kind of home improvement across Surrey and London.
Browse 119 answers and guides
Extensions
Single, double-storey, wrap-around and side-return extensions.
Do You Need Planning Permission for a Home Extension in Surrey?
A comprehensive guide to Permitted Development rights and planning permission requirements for home extensions across Surrey.
Read guide GuideWeekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guide GuideKitchen Extension vs New Kitchen: Which Adds More?
A practical framework for deciding between a kitchen extension and a new kitchen within your existing footprint, covering scope, disruption, planning, and where each adds the most.
Read guide GuideHow Much Does a House Extension Cost? A 2026 Surrey Guide
What decides the cost of a house extension in Surrey and South West London, how long the build takes, what to budget for beyond it, and how to compare proposals on equal terms.
Read guideLoft Conversions
Dormer, hip-to-gable, mansard and Velux conversions.
How Much Does a Loft Conversion Cost? A 2026 Surrey Guide
What decides the cost of a loft conversion in Surrey and South West London, how the four conversion types compare, how long the work takes, and how to compare proposals on equal terms.
Read guide GuideWeekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guide GuideDo I Need Planning Permission for a Loft Conversion in Surrey?
When a loft conversion in Surrey can go ahead under Permitted Development, when it needs planning permission, and where a lawful development certificate and building regulations fit in.
Read guideNew Kitchens
Bespoke kitchen design, installation and open-plan work.
How Much Does a New Kitchen Cost? A 2026 Surrey Guide
What decides the cost of a new kitchen in Surrey and London, line by line: cabinetry, worktops, appliances, layout changes and structural work, plus how long the work takes.
Read guide GuideOpen-Plan Kitchen: The Structural Work Explained
What actually happens when a wall comes down to create an open-plan kitchen: load-bearing walls, steel beams, engineer's calculations, building control, and typical timelines.
Read guide GuideKitchen Extension vs New Kitchen: Which Adds More?
A practical framework for deciding between a kitchen extension and a new kitchen within your existing footprint, covering scope, disruption, planning, and where each adds the most.
Read guideBathrooms
Family bathrooms, en-suites, wet rooms and accessible design.
Garage Conversions
Turning an underused garage into warm, usable living space.
Garage Conversion Guide: Everything You Need to Know
Complete guide to garage conversions in Surrey, covering what drives the cost, planning, building regulations, and popular conversion ideas.
Read guide GuideWeekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guide GuideHow Much Does a Garage Conversion Cost? A 2026 Surrey Guide
What decides the cost of a garage conversion in Surrey and South West London, from a single garage to a self-contained annexe, how long it takes, and how to compare proposals on equal terms.
Read guideRenovations & Remodelling
Whole-home refurbishment, internal remodelling and structural work.
Weekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guide GuideHow Much Does a New Kitchen Cost? A 2026 Surrey Guide
What decides the cost of a new kitchen in Surrey and London, line by line: cabinetry, worktops, appliances, layout changes and structural work, plus how long the work takes.
Read guide GuideOpen-Plan Kitchen: The Structural Work Explained
What actually happens when a wall comes down to create an open-plan kitchen: load-bearing walls, steel beams, engineer's calculations, building control, and typical timelines.
Read guideLog Cabins & Garden Rooms
Year-round garden buildings, engineered and insulated on site.
Renewable Energy
Solar, battery storage, heat pumps, insulation and EV charging.
Smart Home
Lighting, heating, security and AV, wired in or retrofitted.
Commercial
Fit-outs, refurbishments and structural work for businesses.
Planning & Building Regs
Permitted Development, planning applications and Building Control.
Do You Need Planning Permission for a Home Extension in Surrey?
A comprehensive guide to Permitted Development rights and planning permission requirements for home extensions across Surrey.
Read guide GuideDo I Need Planning Permission for a Loft Conversion in Surrey?
When a loft conversion in Surrey can go ahead under Permitted Development, when it needs planning permission, and where a lawful development certificate and building regulations fit in.
Read guideCosts & Billing
How we price, the Cost Proposal, deposits and weekly billing.
How Much Does a Loft Conversion Cost? A 2026 Surrey Guide
What decides the cost of a loft conversion in Surrey and South West London, how the four conversion types compare, how long the work takes, and how to compare proposals on equal terms.
Read guide GuideWeekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guide GuideHow Much Does a New Kitchen Cost? A 2026 Surrey Guide
What decides the cost of a new kitchen in Surrey and London, line by line: cabinetry, worktops, appliances, layout changes and structural work, plus how long the work takes.
Read guide GuideHow Much Does a House Extension Cost? A 2026 Surrey Guide
What decides the cost of a house extension in Surrey and South West London, how long the build takes, what to budget for beyond it, and how to compare proposals on equal terms.
Read guide GuideHow Much Does a Garage Conversion Cost? A 2026 Surrey Guide
What decides the cost of a garage conversion in Surrey and South West London, from a single garage to a self-contained annexe, how long it takes, and how to compare proposals on equal terms.
Read guidePre-Purchase
A builder's view on a property before you commit to buying it.
Working With Us
Our process, guarantees, insurance and what to expect.
Do You Need Planning Permission for a Home Extension in Surrey?
A comprehensive guide to Permitted Development rights and planning permission requirements for home extensions across Surrey.
Read guide GuideWeekly Billing in Construction: Why It's Better for Homeowners
Understanding how weekly billing works in construction and why it offers better financial protection for homeowners than traditional payment structures.
Read guideCan't find your answer?
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“Grand Innovations Surrey did an outstanding job on our kitchen extension. This was a big project involving structural steelwork and a full redesign of our layout, and the team handled everything with real expertise. The quality of finish is superb, and the builders were friendly, tidy, and very considerate of our family routine. The result is better than we imagined, and we feel like we're living in a new home.”