Question 1

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 2

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 3

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 4

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 5

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 6

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 7

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.

Loft Conversions

Raising the standard.

What's Included in Our Loft Conversions Service

Initial Consultation & Feasibility

Architectural Design & Planning

Structural Engineering

Dedicated Project Management

Transparent Weekly Billing

Common Questions About Loft Conversions