Loft Conversions in Petersfield & Hampshire: The Complete Guide

Your loft is probably the most underused space in your house. In Petersfield, where the average home has 2.5 metres of headroom in the loft, there's often huge potential to add a bedroom, office, or bathroom without extending your footprint.

Why Convert Your Loft?

**Add value:** A loft conversion typically adds 20% to your property value — that's £100,000 on a £500,000 Petersfield home.

**No garden lost:** Unlike extensions, you're building up, not out.

**Often no planning needed:** Most loft conversions fall under Permitted Development.

Types of Loft Conversion

### Velux/Roof Light Conversion The simplest and most affordable option. Adds windows to your existing roof structure without changing the roofline.

**Best for:** Lofts with good existing headroom (2.4m+) **Cost:** £25,000-£40,000 **Timeline:** 4-6 weeks

### Dormer Conversion Adds a box-shaped extension to the rear roof, creating full-height space and vertical windows.

**Best for:** Most Petersfield homes, especially semis and terraces **Cost:** £40,000-£65,000 **Timeline:** 6-8 weeks

### Hip-to-Gable Conversion If you have a hipped roof (slopes on all sides), this squares off the end to create more internal space. Often combined with a rear dormer.

**Best for:** Detached and end-of-terrace homes **Cost:** £50,000-£75,000 **Timeline:** 8-10 weeks

### L-Shaped Dormer A larger dormer that wraps around two sides of the roof. Maximises space but may require planning permission.

**Best for:** Larger homes needing significant space **Cost:** £60,000-£80,000 **Timeline:** 10-12 weeks

Planning Permission for Loft Conversions

Good news: most loft conversions in Petersfield don't need planning permission under Permitted Development, provided:

The additional space doesn't exceed 40m³ (terraced) or 50m³ (detached/semi)
No extension beyond the existing roof slope facing the highway
Materials match the existing house
No verandas, balconies or raised platforms
Side-facing windows are obscured glass and non-opening (if less than 1.7m from floor)

**South Downs National Park:** Properties within the Park have reduced Permitted Development rights. Check before proceeding.

Building Regulations

Even without planning permission, you'll need Building Regulations approval for: - Structural work - Fire safety (escape windows, fire doors) - Insulation - Electrics - Staircase

A good design & build company handles all of this for you.

What to Expect During the Build

A typical dormer loft conversion timeline:

**Week 1-2:** Scaffolding up, roof opened, structural steels installed **Week 3-4:** Dormer constructed, roof weatherproofed **Week 5-6:** First fix (electrics, plumbing), insulation, plasterboard **Week 7-8:** Second fix, decoration, staircase, completion

Most of the work happens from outside, so disruption to your daily life is minimal.

Choosing a Loft Conversion Specialist

Look for: - Structural engineering capability - Experience with Building Regulations - Portfolio of completed loft conversions - Fixed-price contracts

**[Petersfield Design & Build](https://petersfielddesignandbuild.co.uk)** specialise in loft conversions across Hampshire. Free consultation at your home to assess feasibility and discuss options.