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Planning Guidance

Hampshire Build's 95% Planning Approval Rate

Mark Eden, Founder of Hampshire Build — 20+ years in residential architectural design
Last updated
3 min read

Key Takeaway

Our architectural design approach, 95% planning approval rate and 20+ years of experience, with an address-specific planning check before committing.

How do project costs and planning routes compare?

Extensions add to the building, while loft and garage conversions work with existing space; each has different structural and planning considerations.

Single-storey, two-storey, loft and garage projects: planning, cost factors and design route
Project Typically needs planning? Main cost factors Typical design route
Single-storey extension Property-specific planning assessment Footprint, foundations and specification Survey, layout, planning check and technical drawings
Two-storey extension Planning route assessed for your design Structure, roof design and specification Survey, planning check and coordinated structural information
Loft conversion Planning route assessed for your roof design Roof type, stairs and structural work Roof and layout assessment, planning check and Building Regulations
Garage conversion Property-specific planning assessment Insulation, structure and services Survey, planning check and Building Regulations design

95% planning approval rate

Hampshire Build has a 95% planning approval rate and 20+ years of experience.

Have a project in mind? Start with a few details about your home.

Check your planning route

Start with the address and proposal

We consider the existing house, neighbouring buildings, local policy, conservation areas, listed status and any Article 4 Directions or planning conditions. Permitted development and planning permission are different routes; the appropriate route depends on the actual proposal.

Fixed-fee architectural design

Pre-Build starts from £1,950 + VAT. Compare the existing packages and scope. Structural calculations are prepared by an independent qualified structural engineer.

Ready to apply these ideas to your own home?

Explore your planning options

Hampshire Build Limited is based at Suite 14, STANTA Business Centre, St Albans AL3 6PF. Call 01722 548911. Explore our St Albans practice and local projects or start a free cost and planning check.

A useful next step for your home

Share a few project details to explore an initial budget and planning view.

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Ready to move forward with your project?

Which related guides can I read?

These guides cover related design, planning and budgeting questions in planning guidance.

Planning Permission for Extensions: What Hampshire Councils Look For in 2026
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Planning Permission for Extensions: What Hampshire Councils Look For in 2026

Every local planning authority in Hampshire has its own design preferences and red lines. Understanding what Winchester, Basingstoke, Test Valley and the rest actually want to see on a planning application can be the difference between approval and refusal.

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Permitted Development or Planning Permission: Which Route is Right for Your Extension?
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Permitted Development or Planning Permission: Which Route is Right for Your Extension?

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Home Extensions in St Albans: Navigating Conservation Areas, Planning & Design
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Home Extensions in St Albans: Navigating Conservation Areas, Planning & Design

St Albans has 28 conservation areas and strict planning requirements. Our complete guide helps homeowners understand what's possible, what it costs, and how to get planning approval for your extension project.

Feb 2026 10 min read

What is the next step for my home?

Use these resources to explore your project and discuss what may suit your home.

Ready to Start Your Extension?

Take a practical first step with a project-specific cost and planning overview.

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