Calculating compensation for property damage
Where works carried out on one property damage another, should compensation be payable on the basis of reinstatement costs or diminution in value? The High Court tackled that issue recently in the case of Lea Valley Developments Limited v Derbyshire.
The owner of a house had obtained an award under the Party Wall etc. Act 1996 that authorised a building project, including excavation works. The award required the owner to make good any decorative or structural damage caused to a neighbouring property, a block of flats, or to make payment in lieu.
The works caused damage to the block that was agreed to be so serious that it was beyond economic repair. The costs of demolishing and rebuilding the block were estimated at between £1 million and £2 million.
However, the house owner said that the diminution in the block’s value arising from the damage was between £500,000 and £1 million. The owners of both properties sought declarations as to the correct basis on which compensation was payable.
The Court rejected the owner of the block’s arguments that, on a true reading of the Act and the terms of the party wall award, there was no issue to be tried and that damages had to be calculated on a reinstatement basis. However, it also refused to grant the owner of the house a declaration that, as a matter of common law, the diminution in value basis necessarily prevailed.
The issue of whether reinstatement or diminution in value represented the correct approach to the assessment of damages was highly fact sensitive and dependent on a wide range of factors. There was no rule of law that prohibited awards on either basis or that required one to prevail over the other. It was thus inappropriate to resolve the issue without hearing detailed factual evidence.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help the homebuilding sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.