Loft Conversions

Unlock the full potential of your home with a professionally designed loft conversion. At Big Discount Plans, we specialise in producing loft conversion drawings, planning permission applications, and building regulation plans for homeowners, landlords, and developers across Greater London.

Whether you’re planning a dormer loft conversion, hip-to-gable loft, mansard conversion or a Velux/rooflight loft conversion, our experienced designers deliver accurate plans that get approved quickly — helping you add space, value and comfort to your home.

A well-designed loft conversion is one of the best ways to increase living space, property value, and rental income in London.

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Why Choose a Loft Conversion?

A loft conversion is the most effective way to maximise unused attic space without extending your footprint.

  • Extra space for a bedroom, ensuite, office, studio or playroom

  • Significant increase in property value

  • Cost-effective compared to house extensions

Benefits include:

  • Ideal for HMOs, rental properties and family homes

  • Many loft types fall under Permitted Development

  • Minimal disruption when designed correctly

We create loft plans for terraced, semi-detached, detached, and bungalow properties, ensuring full compliance with planning and building regulations.

woman wearing yellow long-sleeved dress under white clouds and blue sky during daytime

The drawings were clear and helped us get approval quickly. Highly recommend!

Joan M.

A happy homeowner reviewing loft conversion plans with an architect.
A happy homeowner reviewing loft conversion plans with an architect.

Professional service that made our loft conversion stress-free and straightforward.

Mark T.

Close-up of detailed loft conversion control drawings on a desk.
Close-up of detailed loft conversion control drawings on a desk.
★★★★★
★★★★★

Complete Architectural Design Package

Planning Drawings for Loft Conversions

Fully detailed architectural plans showing elevations, sections, roof changes, dormers, stair design, fire escape routes and head height compliance.

Building Regulation Drawings

Compliant drawings covering fire safety, insulation, structural details, floor strengthening, stairs and escape routes — essential for Building Control approval.

Structural Calculations

Engineered structural calculations for RSJ beams, steel frames, dormer structures, ridge beams, joists, and load-bearing walls.

Planning Permission or Permitted Development Advice

We determine whether your loft qualifies under Permitted Development Rights or requires full planning permission.

Party Wall Notices & Guidance

Loft conversions often require party wall agreements — we prepare notices and provide guidance for seamless progression.

Full Application Submission Service

We act as your planning agent, submit all drawings, manage council communication, handle amendments, and resubmit if needed — at no extra cost.

Our design packages include everything required for planning approval and construction:

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Contact Us

Get in touch for your loft plans.

Projects

Planning and control drawings for loft conversions.

Architectural blueprint of a loft conversion with detailed measurements.
Architectural blueprint of a loft conversion with detailed measurements.
Initial Plans

Drafting precise layouts for your loft space.

3D rendering showing a finished loft conversion interior.
3D rendering showing a finished loft conversion interior.
3D Models

Visualizing your new loft in detail.

Engineer reviewing structural drawings on a desk.
Engineer reviewing structural drawings on a desk.
Completed loft conversion with skylights and wooden beams.
Completed loft conversion with skylights and wooden beams.
Structural

Ensuring safety and compliance with standards.

Final Check

Reviewing all drawings before submission.

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Ready for a free quote?

Email

info@bigdiscountplans.co.uk