Resource
London stormwater resource hub
Local prevention, recovery, municipal and professional pathways.
Municipal programme
Basement Flooding Grant Program
90% support up to measure-specific maximums
- Ontario onlymunicipal programme directory
- Official sourceslinked and review-dated
- No guaranteeseligibility remains with the authority
Verification status
Current official programme verified
London supports multiple approved measures, with written pre-approval and measure-specific limits.
Open the official City of London pageCurrent programme summary
Measures identified by the official source
- Backwater valve: up to $1,800
- Weeping-tile disconnection and new sump system: up to $4,000
- Sump-pump battery backup with an eligible current application: up to $1,400
- Sewage ejector in an approved case: up to $6,000
- Eligible storm connection and private drainage work: measure-specific limits apply
These summaries do not replace the official application, schedule, bylaw, permit or inspection requirements.
Who may qualify
Eligibility depends on the applicant, property and work.
Residential owners facing basement flooding or identified risk, subject to the City’s technical and programme criteria.
London’s programme is broader than a single-device rebate. The technical basis, drainage connection and written approval determine which measure may be supported.
Application pathway
Complete approvals before assuming a cost will be reimbursed.
Obtain written pre-approval and confirm building, drainage and inspection requirements before construction.
- 1
Read the current official programme page and application.
- 2
Confirm property and applicant eligibility.
- 3
Obtain required assessment, pre-approval, permits and contractor qualifications.
- 4
Preserve invoices, photos, inspections and proof of payment.
- 5
Submit within the official deadline and retain the decision.
Related pathways
Connect funding information to technical suitability.
Resource
System selection framework
Choose measures by water pathway, risk, feasibility and maintenance.
Resource
Homeowner rebate and permit guide
Understand the difference between funding eligibility and technical suitability.
Resource
Rebate versus disaster assistance
Keep prevention programmes separate from event-specific recovery assistance.
Frequently asked questions
Programme and local-resource questions
Does RSM approve this rebate?
No. The municipality or region administers the programme and determines eligibility.
Should work begin before approval?
Not unless the current official programme clearly permits it. Many programmes require pre-approval, permits or pre-work inspection.
Does the maximum amount mean every applicant receives that amount?
No. Payment depends on eligible costs, measure limits, inspections, available funding and the authority’s decision.
Does rebate eligibility prove the proposed system is technically suitable?
No. Funding eligibility and property-specific technical suitability are separate questions.
Before planning work
Verify the current official programme.
Programme status, amounts, eligible properties, pre-approval, permits, inspections and funding can change. Obtain written confirmation before incurring costs.
Published: July 19, 2026 Last reviewed: July 19, 2026
RSM is an independent education platform. It does not administer municipal rebates, approve funding, issue permits or endorse contractors.
Next steps
Use Ontario information carefully
Confirm local details with the official municipality or authority before acting.