Affordable architectural design services, specialising in Dream Homes, House Extensions, Loft & Garage Conversions & Full Home Renovations

CWJ provides architectural design and planning services across Ayrshire, Renfrewshire, Lanarkshire & Glasgow. We specialise in Dream Home Builds, House Extensions, Loft Conversions, Garage Conversions, Garden Rooms and Full Home Renovations.
Our approach is budget-led and buildable: honest feasibility advice, client consultations, clear drawings, 3D visuals, and cost guidance so designs don’t become unaffordable at tender stage
Create your dream home with a new build
Create more space without moving house
Add space & value to your existing home
Remove the clutter & create more space
Fully serviced with electrics & plumbing
Create open plan living with wall takedowns
From initial concept to final construction, we provide comprehensive architectural
design services tailored to your unique needs.

Our design service is built to remove uncertainty and provide complete transparency. We combine practical construction knowledge with planning-ready documentation and early budget discussions. That way, you can move forward with confidence - whether you’re aiming for a new build, house extension, loft conversion, garage conversion or a full home renovation.

We manage planning and building warrant applications for homeowners across Ayrshire and Glasgow. From shaping the application strategy and preparing submissions to answering queries and coordinating technical information, we make approvals far less stressful. You stay informed, your budget remains realistic, and your project keeps moving forward with confidence.

Structural changes can go badly wrong without proper coordination. We manage the engineering side by briefing engineers correctly, integrating calculations into your drawing pack, and ensuring compliance with Scottish Building Warrant requirements. From steels and dormers to loft upgrades and renovations, we keep the process clear and buildable.

A design is only useful if it fits a realistic budget. Our feasibility and cost estimation service gives homeowners an early, honest view of what is achievable before money is spent on drawings that may later need scaled back. We help you understand cost drivers, compare options, set a sensible brief, and move forward confidently.

Most homeowners feel confident at design stage, with stress usually starting once work begins on site. Our Construction Phase Support service provides a dedicated contact to help keep the build aligned with drawings, scope and programme. We support meetings, coordinate information, track progress, and manage change control to protect budget, reduce delays & uncertainty..
Let's discuss your vision and explore how we can bring it to life.
Our team focuses on understanding your vision, lifestyle, and requirements to craft designs that truly reflect your personality. With a commitment to quality & attention to detail.




CWJ Design Services provided a very professional service from start to finish. The drawings were clear, well thought out and handled efficiently for planning. Paul, the architectural technician, was knowledgeable, responsive and easy to deal with throughout. I would happily recommend them.

CWJ delivered clear, practical drawings for our structural wall takedown in Kilwinning. The planning and design process was handled efficiently, communication was good throughout, and the overall service gave us confidence to move forward with the project.

We used CWJ Design for our loft conversion and were very pleased with the service. The design was well considered, the drawings were produced promptly, and everything was explained clearly. The process felt organised throughout and made moving onto the construction phase much easier.

We believe great architectural design emerges from deep understanding of place, purpose, and the people who inhabit our designs.
Architectural Design & Drawings
Planning & Building Warrants
Structural Engineering
Cost Estimations & Feasibility
Construction Phase Support
Compliance Certification
Design & Build Delivery
Unit A, Block 10, Moorfield Industrial Estate, Kilmarnock KA2 0BA
07984 993536
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