Contemporary residential extension at dusk
ArcForma Residential · Leeds + UK

Make
more
of home.

Clear architectural design, planning support and builder-ready information for extensions, renovations and home transformations.

Define/Develop/Coordinate/Deliver
Planning supportClear drawings and guidance to move through the right approval route.
Technical designPrecise, coordinated information developed around how the project will be built.
Builder-ready packsComplete information to support pricing, Building Regulations and construction.
Residential design with
technical depth.
01
Direct design inputClear communication without unnecessary layers.
02
Planning + technicalOne route from first idea to buildable information.
03
Leeds basedResidential projects across Yorkshire and the UK.
04
Transparent toolsEstimate fees, build cost and timing before committing.
Choose your support

Simple stages. Clear outcomes.

Get permission

Design + Planning

From £1,650*

For survey, design development and the appropriate planning submission.

  • Measured information
  • Design options
  • Planning drawings
  • Submission + liaison
Estimate this package
Complex projects

Bespoke

Tailored

For major renovations and projects needing more design, consultant coordination or site support.

  • Feasibility
  • Design studies
  • Consultant coordination
  • Construction support options
Discuss your project

*Prototype guide prices only.

Instant design estimate

Know the likely fee before the first call.

A simple no-gate estimate to help you understand the likely level of service.

Indicative ArcForma fee

Final fee would be confirmed against scope, property and complexity.

Free homeowner tools

Plan with better numbers.

Open all tools →
Interactive planner

Sketch your extension online.

Upload a floorplan, set the scale, draw a proposed extension and see approximate area and cost instantly.

Open free planner →
+ 24.8 m²
£

Build cost calculator

Test project size, finish level and UK region against a broad cost range.

Estimate build cost →

Planning starter check

Flag common factors that may affect the planning route before design work begins.

Run starter check →

Project timeline

See how survey, design, planning and technical work can add up before construction starts.

Estimate timeline →

Value-add explorer

Explore a crude relationship between added floor area and local £/m² values.

Explore value →

Got a home you want to change?

Tell us what isn’t working, what you want to achieve and roughly where you are in the process.

Start your project →