Every Project Type. Every Stage Handled.
From a single-storey extension to a full new build, CJH carries your project from first sketch through planning approval and building regulations — with a free feasibility consultation to start.
Find Your Project Type
LDC Applications
Single & Double Extensions
Loft Conversions
Dormer, hip-to-gable, and mansard loft conversions designed and approved. Structural coordination and building regulations drawings included as standard.
We prepare and submit Lawful Development Certificates to confirm permitted development rights. You receive a formal legal decision — not just an opinion.
Full measured survey, planning drawings, and submission management for single and double-storey extensions. We track the application through to decision.
Garage Conversions
Building Regulations
HMO Conversions
Planning drawings and building regulations packages for integral and detached garage conversions. We confirm permitted development status before drawing a line.
Detailed technical drawings for Building Control submission across all project types. Coordinated with structural engineers to keep your approval on schedule.
Planning and building regulations packages for Houses in Multiple Occupation. We navigate Article 4 restrictions and fire safety requirements with you.
Change of Use
New Builds
3D Visualisations
Full planning applications for change of use across commercial and mixed-use properties. We assess viability before submission so your timeline stays intact.
Concept through planning approval and full building regulations for new residential and commercial builds. One team, one point of contact, no handoffs.
Photorealistic 3D renders produced to support planning submissions and client sign-off. Produced from the same drawing set — no duplication, no extra cost.
One practice. Every stage.
Most practices hand you drawings and step back. CJH owns the outcome — from feasibility through the planning decision notice and Building Control sign-off.
Design & Measured Survey
Accurate measured surveys feed directly into planning drawings — no rework, no delays when Building Control picks up the file.
Planning Submission & Management
We submit, correspond with the planning officer, and respond to conditions. You track progress; we handle the process.
Building Regulations Approval
Technical drawings, structural coordination, and Building Control submission — so your contractor can break ground with a clean approval in hand.
Start with a free feasibility consultation.
Tell us your project type and we will tell you whether it is approvable, how long it should take, and what the process involves — before you commit to anything.