Question 1

How much does a full house renovation cost in London?

Accepted Answer

A full house renovation in Central London typically costs £2,500–5,000 per square metre depending on specification level and property type. A 150m² Victorian terrace in Kensington at premium specification would budget at approximately £375,000–750,000. Use the Myrmex calculator for an estimate based on your specific property.

Question 2

How much does a basement conversion cost in London?

Accepted Answer

Basement conversions in Central London typically cost £3,000–6,000 per square metre including excavation, underpinning, tanking, and fit-out. Costs vary significantly by borough due to planning requirements — RBKC has strict basement excavation policies that add both cost and programme duration compared to Westminster.

Question 3

How long does a residential renovation take in London?

Accepted Answer

A typical full renovation of a Central London residential property takes 16–32 weeks on site depending on scope. Pre-construction (design, planning, procurement) adds 8–16 weeks before works begin. Basement conversions and listed building projects extend both phases. The Myrmex 13-gate programme provides a fixed timeline from day one.

Question 4

What does the Myrmex renovation calculator include?

Accepted Answer

The calculator estimates renovation costs based on property size (GIA in square metres or square feet), scope of work (kitchen, bathroom, structural, basement, full renovation), specification level, property arrangement, and borough. It produces a budget range and estimated programme duration. No phone call or meeting required.

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