Is it worth renovating an old house or demolishing and rebuilding?

The choice between renovating and demolishing is rarely settled by emotion or by a hunch about cost. It is settled by a technical diagnosis, carried out before any design.

What to assess in the existing house

• Structure: foundations, slabs and beams — active cracks, reinforcement corrosion and excessive deflection are warning signs.
• Ceiling height: little vertical space limits ceilings, air conditioning and the sense of spaciousness.
• Services: old wiring and iron pipework require full replacement.
• Roof and damp: roofing, gutters and waterproofing are expensive, recurring items.
• Siting: if the house sits poorly on the plot, renovating preserves the original mistake.

When renovating usually wins

• Sound structure and ceiling heights above today's market standard.
• Built area larger than current planning rules would allow today.
• A good position on the plot, with favourable sunlight and ventilation.
• Valuable elements that are hard to reproduce: timber, stone, mature trees.
• A tight timeline — partial renovations can be executed in phases.

When demolishing usually wins

• Significant structural damage or a history of improvised interventions.
• A heavily compartmented layout, with structural walls preventing open plan.
• A substantial gain in area, sunlight or ventilation with a new design.
• The need for a basement, a lift or longer spans.

A renovation requires more design, not less — because every decision depends on what is already there.

The step that prevents the wrong decision

A feasibility study compares both scenarios in equal detail: property survey, structural diagnosis, planning analysis, cost and timeline estimates for each path and a projection of the final property value. It costs a fraction of the works and is what turns a hunch into a decision.

This is the diagnosis we carry out before proposing any design concept — in residential renovations and in retrofits of older properties.