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Architectural Services for Homeowners
Well‑considered design and clear drawings for extensions, conversions and home alterations.
Practical, cost‑aware design that adds space, light and value.
Unlock unused roof space with efficient, compliant design options.
Transform an underused garage into warm, comfortable living space.
Improve flow, light & functionality with thoughtful internal changes.
Planning & Building Control Approvals
Full preparation and submission of all drawings and documents.
Recent Projects
A selection of recent home extensions, loft conversions, garage conversions and internal alterations.
Why Homeowners Choose GT Building Design
Well‑considered layouts and clear drawings that support smooth Planning and Building Control approvals.
Over 40 years’ experience
Domestic architectural design specialising in extensions, conversions and internal alterations.
Chartered Architectural Technologist
Professional, compliant design from a qualified specialist.
Clear fees
Transparent pricing with no VAT and no unexpected extras.
Planning & Building Control
Applications prepared and submitted on your behalf, with guidance at every stage.
A dedicated domestic specialist
Practical, well‑considered design focused on how you live and what your home needs.
What Clients Say
Albert M
"Glenn recently completed the design and architectural work for me taking his detailed drawings right through the planning office process and building control.
From the moment I met with Glenn at my property I felt comfortable. Glenn has been doing design and the architectural drawings for more than 35 years. It’s easy to tell he takes great pride in his work and will take the time to get it just right for you with your feedback.
His drawings are very detailed that in my case it enabled the planning office to grant the approval without changes. Great job Glenn."
Tommy C
"Embarking on any building project can be a very daunting task…
From the outset Glenn impressed us with his knowledge, professional approach and enthusiasm for our project.
He designed us the ideal home making full and best use of our site. Importantly Glenn also produced a comprehensive 34‑page tender document covering all aspects of the build that proved to be invaluable.
We thank Glenn hugely for helping us with what could have been a very stressful experience, and helping us achieve our dream home."
Ross M
“I got in touch with GT Building Design about the possibility of a kitchen extension…
Right from the first email, I knew Glenn was the right man for our project.
Glenn’s final plans for our project are extremely detailed and they sailed through planning and building control with ease due to his extensive knowledge and experience.
We cannot wait to begin work on our dream kitchen space and we have nothing but good words to say about working with GT Building Design.”
Awards & Recognition
Recognised for excellence in residential architecture throughout Northern Ireland:
Your Home Extension & Design Process. Step by Step
A Clear, Structured Path From First Call to Securing Approvals
1. Introductory Call
A friendly conversation to understand your ideas and outline what’s realistically achievable.
2. Written Fee Proposal
A clear, stage‑by‑stage proposal with transparent pricing.
3. Measured Survey
A measured survey of your home to produce existing plans and elevations before design work begins.
4. Concept Design
Refined, practical design options that balance creativity, compliance and cost‑awareness, tailored to your wishes.
5. Planning Application
Preparation and submission of all drawings and documents, with all communication with Planning handled for you.
6. Building Control Application
Fully detailed, compliant technical drawings that give builders clear, reliable instructions.
About Glenn
Clear, practical architectural drawings for homeowners planning home extensions, loft conversions, garage conversions and internal alterations across North Down, Greater Belfast and surrounding areas. A calm, straightforward approach focused on helping you make the right decisions for your home.