Design flood event
For the purposes of the Home Quality Mark, a design flood event is a historic or notional flood event of a given annual probability, against which the suitability of a proposed development is assessed and mitigation measures, if any, are designed.
The design flood level is the maximum estimated water level during the design storm event including an allowance for climate change in line with current best practice national planning guidance. The design flood level for a site can be determined through either known historical data or modelled for the specific site.
Ref Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018.
See also: Flood event.
[edit] Related articles on Designing Buildings
- BREEAM Flood risk management.
- BREEAM Surface water run-off.
- BRE articles.
- Changing attitudes to property flood resilience in the UK
- Flood.
- Flood level.
- Home Quality Mark.
- Building Research Establishment.
- Flood and Water Management Act.
- Flood event.
- Flood plain
- Flood risk
- Flood risk assessment.
- Flood risk management plan
- Flood zone
- Flood defences
- Planning for floods.
- Property flood resilience
- Surface water
- Sustainable urban drainage systems.
Featured articles and news
Do you take the lead in a circular construction economy?
Help us develop and expand this wiki as a resource for academia and industry alike.
Warm Homes Plan Workforce Taskforce
Risks of undermining UK’s energy transition due to lack of electrotechnical industry representation, says ECA.
Cost Optimal Domestic Electrification CODE
Modelling retrofits only on costs that directly impact the consumer: upfront cost of equipment, energy costs and maintenance costs.
The Warm Homes Plan details released
What's new and what is not, with industry reactions.
Could AI and VR cause an increase the value of heritage?
The Orange book: 2026 Amendment 4 to BS 7671:2018
ECA welcomes IET and BSI content sign off.
How neural technologies could transform the design future
Enhancing legacy parametric engines, offering novel ways to explore solutions and generate geometry.
Key AI related terms to be aware of
With explanations from the UK government and other bodies.
From QS to further education teacher
Applying real world skills with the next generation.
A guide on how children can use LEGO to mirror real engineering processes.
Data infrastructure for next-generation materials science
Research Data Express to automate data processing and create AI-ready datasets for materials research.
Wired for the Future with ECA; powering skills and progress
ECA South Wales Business Day 2025, a day to remember.
AI for the conservation professional
A level of sophistication previously reserved for science fiction.
Biomass harvested in cycles of less than ten years.
An interview with the new CIAT President
Usman Yaqub BSc (Hons) PCIAT MFPWS.
Cost benefit model report of building safety regime in Wales
Proposed policy option costs for design and construction stage of the new building safety regime in Wales.
Do you receive our free biweekly newsletter?
If not you can sign up to receive it in your mailbox here.






















