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Home Extension, Planning & Building Control Advice in Northern Ireland
Clear, practical guidance from Chartered Architectural Technologist Glenn Thompson MCIAT to help homeowners make informed decisions before investing in extensions, conversions and home improvements.
40+ years' experience in residential architecture, Planning and Building Control approvals.
Chartered Architectural Technologist
House Extensions • Loft Conversions • Garage Conversions • Internal Alterations
Explore GT Building Designs Advice Guides
Architect vs Chartered Architectural Technologist
Understand the differences and decide which professional is right for your project. Read Guide →
Feasibility Study
Discover why a feasibility study can save time, money and disappointment before design work begins. Read Guide →
The 4 Key Stages of Extending Your Home
A simple guide to the design, planning and Building Control process. Read Guide →
Loft Conversion Guide
Everything homeowners need to know before converting their loft. Read Guide →
Garage Conversion Guide
Transform unused garage space into valuable living accommodation. Read Guide →
Internal Alterations
Removing walls, creating open-plan living and structural considerations. Read Guide →
Planning Permission
When permission is required and how the application process works. Read Guide →
Building Control
What Building Control approval covers and why it is important. Read Guide →
Why Choose GT Building Design
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Chartered Architectural Technologist (MCIAT)
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More than 40 years' experience
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Planning Permission and Building Control expertise
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Clear, practical advice tailored to homeowners
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Serving clients across Northern Ireland
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Extensive experience helping clients secure approvals
Need Advice on Your Project?
If you're considering a house extension, loft conversion, garage conversion or internal alterations, get in touch for clear, practical guidance.
FAQs
If you’re planning home improvements, these quick answers might help before you start your project.
What is the first step before extending my house?
A feasibility study is often the best place to start. It allows potential constraints, design options and approval requirements to be identified before you commit to detailed plans.
Do I need Planning Permission for an extension in Northern Ireland?
Not always. Some extensions and alterations may fall under Permitted Development rights, while others require Planning Permission. The requirements depend on the size, location and nature of the proposed works.
What is the difference between Planning Permission and Building Control?
Planning Permission considers how a development affects its surroundings, while Building Control focuses on safety, structural integrity, energy performance and compliance with Building Regulations.
Can I convert my loft or garage without Planning Permission?
Many loft and garage conversions can proceed without Planning Permission, although Building Control approval is usually still required. Each property should be assessed individually.
What drawings are required for Planning and Building Control applications?
Most projects require existing and proposed drawings, including floor plans, elevations and sections. The specific requirements depend on the scale and complexity of the project.
How long do Planning and Building Control approvals take?
Approval times vary depending on the project and authority involved. Initial timescales can usually be discussed during the first consultation so expectations are clear from the outset.
Do you provide building work or project management?
No. My service focuses on measured surveys, design development, Planning Permission and Building Control approvals. Homeowners are free to appoint their own builder and contractors.
I only have an idea at this stage. Can I still get advice?
Absolutely. Many clients contact me before they have sketches, measurements or a fixed budget. An initial discussion is often the best way to explore what may be achievable.