Flood risk assessment extensions
RIDA Reports provide a detailed, policy-compliant flood risk assessment for extensions and include everything the Environment Agency and the Council demands for your planning permission.
Your extension is important to us
Any minor property extension of 250 square meters or less in the UK in flood zones 2 and 3 requires a simplified form of flood risk assessment.
Our Flood risk assessment services cover the following types of extensions:
- Residential Extensions.
- Minor Commercial/Leisure Extensions.
- Change of use.
- Zone 2/3 Projects.
Our Clients
What Is “Standing Advice” for Extensions?
Most extensions in flood zones 2 and 3 do require a flood risk assessment. The government defines minor extensions as a household (or similar) extension with a footprint of 250 m² or less.
Now, a standing advice is a simplified set of rules for any minor extension in flood zones 2 and 3. A standing advice is indeed an FRA, but in a simpler form and has to only meet a specific set of requirements:
- The site address
- Details and description of the extension
- The estimated flood levels
- Finished floor levels
Our Flood Risk Assessment Extension Service for £750.00 is approval ready, fast and compliant
RIDA Reports specialise in quick and compliant FRA’s for Developments less than 250 square metres within flood zone 2 or 3. We deliver the first draft of the flood risk report in 48 hours and the final report in 20 days (once detailed data from the Environment Agency is obtained).
For £750, you will get:
A draft in 48 hours
One revision round
Planning ready document
Consultation
Our chartered engineers with 21+ years of experience and advanced methodology design a compliant flood risk assessment report following EA/NPPF guidelines:
- We do a full analysis of the site.
- Identify flood zones using official flood maps.
- Account for climate change.
- Assess all sources of flooding.
- Check and identify safe access/egress routes in a flood.
- Provide advice related to flood compensation.
- Recommend finished floor levels (600 mm above flood levels).
RIDA Reports Flood Risk Assessment process for extensions
Our process is designed to keep things simple. Once we receive your site information and development plans, we handle the technical work while keeping you fully informed throughout the process.
Our process roadmap:
- Submit information: Our clients submit information such as address, plan and ground levels.
- Flood zone check: We confirm the flood zone and FRA requirement using official gov.uk flood data and guidelines.
- First FRA report: Our first FRA report is completed within 48 hours. This initial draft is enough to decide if the project is safe to proceed, how to design the layout and what architects should expect from this project.
- Revision if required: We offer one revision and incorporate your feedback.
- Final FRA: Final FRA is completed in 20 days after receiving the Environment Agency data and any remaining technical inputs.
- Submission: The final draft is submitted along with the planning application for approval.
What We Need From You
You might be thinking, what do you need to provide us for flood risk assessment? There is not much we need from you, simply:
- Your site address, which we will use to access flood maps and figure out the flood zone
- Extension plans, including drawings and sketches
- What are your current ground levels
- Additional project details, such as notes on access, intended use of new rooms, etc.
Usually, no site visit and we work from the information you provide. We keep the process efficient, clean and fast.
Our comprehensive FRA report includes:
- Site & Development Details.
- Flood Level Assessment.
- Finished Floor Levels.
- Access & Escape Routes.
- Resilience & Mitigation.
- Clear notes confirming the report follows EA and NPPF guidelines.
Every report is a single cohesive document, complete with annotated maps and data tables. We incorporate one round of your feedback, then finalise the FRA for submission.
Benefits of Working with us
Our projects have helped customers obtain planning permission and built safety!
Our initial reports are completed within 48 hours, saving time and providing peace of mind
Our FRAs meet planning requirements, cover all criteria, and prevent planning delays
Our rates are fixed and transparent
We have 21+ years of experience, and we provide support throughout the process
Contact RIDA Reports today for a quick, no-obligation quote. Our chartered engineers will instantly handle your extension’s FRA and provide a fully compliant and approval-ready flood risk assessment report.
FAQS
If your extension is under 250 m² and in flood zone 2 or flood zone 3, then you will need an FRA based on planning regulations mandated by the UK government.
We include climate change allowances to flood levels to generate a fully compliant flood risk report that proves your extension will remain safe from flood for decades.
The cost is £750 for any qualifying extension (≤250 m² in FZ2/3). There are no hidden fees and we offer a revision round. Additionally, we deliver the first draft of the flood risk report in 48 hours and the final report in 20 days.