Self-Build Cost Calculator UK (2025)

Estimate Your House Building Costs Instantly

Use our free architecture cost calculator to get an instant cost range for your project. No obligation.

Location * Plot type * Procurement route * Build quality * Floor area (sqft) 1 Number of new kitchens Number of new bathrooms

Location * Type of loft conversion * Listed Building * Procurement route * Build quality * Floor area (sqft) 1 Number of new bathrooms

Location * Type of refurbishment * Listed Building * Procurement route * Build quality * Floor area (sqft) 1 Number of new kitchens Number of new bathrooms

Location * Type of new build * Green Belt * Procurement route * Build quality * Floor area (sqft) 1 Number of new kitchens Number of new bathrooms

Ready for a Personalized Quote?

Book Now. Loved by Clients Across the UK.

“The architecture cost calculator gave me an instant estimate and saved so much time.

The team was transparent, responsive, and guided us through planning permission smoothly.

We ended up almost exactly within the estimated budget. Highly recommend!”

-Al Brew

As Seen In

Discover more projects

Frequently Asked Questions:

How much does an architect cost in UK?

In the UK, architects typically charge between 7–15% of construction costs, or an hourly rate of £50–£120+. Our calculator gives you a tailored instant cost range.

Do architects charge per hour or project?

Architects may charge a percentage of the project cost, a fixed fee, or an hourly rate depending on scope. The calculator provides a project-based estimate for budgeting.

How accurate is this calculator?

The calculator gives an instant cost range based on UK averages and project type. It’s an early guide, not a final quote, since factors like location, materials, and complexity affect real costs.