House Extensions in Edinburgh

Beautifully designed extensions that add space, light and lasting value.
I help homeowners create architect-designed extensions that blend with the character of their home and the way they live.

What I specialise in


I specialise in residential extensions across Edinburgh — from sensitive rear and side extensions to lofts and full-width kitchen-diners. I focus on solutions that improve daily life, add lasting value and sit comfortably in their context.

  • Porch, rear and side extensions

  • Loft conversions & extra storey additions

  • Single-storey garden rooms and glazed rear extensions

  • Internal alterations and interior design

If you’re considering extending your home, I’ll guide you from the first sketch to completion. Contact me.

Interior of an architect-designed house extension in Edinburgh

What clients say


Here’s what recent clients say about working with me.

Practical Ingenuity

"We felt an immediate understanding with Mr Kabelka from our very first meeting. We particularly appreciate his reliability, creativity, willingness to adapt to different requirements, and his highly practical approach."

Pavel Mádr

Efficient Communication

"Whenever we were uncertain, Mr Kabelka offered several design options or refined our ideas with the right structure. We also valued his broad knowledge of how to solve renovation challenges."

Pavel Fadrhonc

A Keen Eye for Detail

"I greatly appreciate Mr Kabelka’s outstanding attention to detail. He can clearly explain the benefits of his designs while remaining open and attentive to the client’s practical and aesthetic requirements."

Karel Schmidt

Rear extension to the garden

Services


I offer an end-to-end service — from concept and planning through to technical drawings and construction support.My architectural services cover every stage of your extension project.

  • Concept & feasibility studies

  • Planning & Building warrant applications

  • Construction drawings

  • Tendering & contractor coordination

  • On-site inspections and handover support

How I Work – 5 Steps to Your House Extension


The process follows RIBA project stages, ensuring your extension runs smoothly from concept to completion.

1. Initial consultation

We´ll discuss goals, budget, potential constraints and project deliveries.

2. Concept design

We will develop the most appropriate design based on the brief.

3. Planning & Warrant

Project drawing packages, submission and liaison with authorities.

4. Detailed design

Construction drawings and specifications, tender support. Upon request.

5. Construction support

Contractor coordination and site checks (contract administration).

Frequently asked questions


Q1: How long does a house extension project take?

A: The concept stage takes up to 4 weeks. Planning and warrant times vary, but I’ll guide you through the full timeline.


Q2: Do I need planning permission?

A: Many smaller extensions are permitted development; others need approval. I’ll confirm this early and manage the process.


Q3: What budget should I plan for?

A: Budgets depend on size, specification, and complexity. As a guide, expect £2,000–£4,000/m². We’ll refine this together at the concept stage.


Q4: How much does it cost to work with JKA Architecture?

A: Concept design starts from £500, planning packages from £1,250, and building warrant drawings from £1,750. Once we define your brief, I’ll prepare a clear proposal.

Concept of a new built house

Ready to talk about your extension?


Schedule a free 30-minute online consultation or share your project details below — I’ll reply personally within 48 hours.



Based in Edinburgh © JKA Architecture 2025