What Is the City of London’s Basement Flooding Grant Program?
The City of London offers a Basement Flooding Grant Program designed to help homeowners reduce the risk of basement flooding by funding eligible mitigation measures — including the installation or replacement of sump pumps. The program targets properties that are at risk of flooding from stormwater or sewer backups and encourages proactive steps to protect homes, belongings, and long-term property value.
Grant programs like this typically cover a portion of eligible costs, require documentation and permits, and aim to reduce overall demand on municipal stormwater infrastructure. Homeowners interested in taking advantage of available funding should review the City of London’s official program page to confirm current eligibility rules, covered measures, and funding levels before starting work.
Who Is Eligible?
Eligibility rules vary, but common criteria the City of London uses (and that homeowners should check on the official program page) include:
- Property type: Owner-occupied, single-family homes, semi-detached, and sometimes duplexes are most commonly eligible. Multi-unit buildings or commercial properties may have different rules.
- Property location: Some programs focus on areas that have experienced repeated basement flooding or are classified as higher risk zones.
- Pre-existing conditions: The City may require documentation of past flooding or a risk assessment; in some cases, properties with a history of basement flooding receive priority.
- Permits and licensed contractors: Work often must be completed by a licensed plumbing contractor and comply with local building and plumbing codes. Permits may be required.
- Application timing: Pre-approval is sometimes required before work begins; otherwise, costs may not be eligible for reimbursement.
Because program details can change, homeowners should verify eligibility, application deadlines, and documentation requirements on the City of London’s Basement Flooding Grant Program web page before scheduling work.
What Can the Grant Be Used For?
Grants aimed at preventing basement flooding generally cover a range of measures. For homeowners focused on sump pumps, the relevant eligible items frequently include:
- Sump pump installation — adding a sump pit and pump to collect and discharge groundwater away from the foundation.
- Sump pump replacement — replacing an older pump with a new, higher-capacity or more reliable model.
- Battery backup systems — adding a backup power source so the sump pump runs during power outages (a common factor during storms).
- Check valves and discharge improvements — preventing backflow and routing discharge to an appropriate, permitted location.
- Connection to weeping tile or storm systems — when allowed and practical, tying sump pumps into a foundation drainage system.
Other eligible measures under the program may include sewer backflow prevention devices, foundation drainage improvements, or downspout and grading changes. The exact list of eligible expenses and documentation requirements should be confirmed on the City of London’s site.
How to Apply
Applying for a municipal grant usually follows a set process designed to ensure the work is done properly and funds are used appropriately. A typical application process for a basement flooding grant looks like this:
- Review program details: Check the City of London’s Basement Flooding Grant Program web page for the most current eligibility rules, covered measures, and funding limits.
- Request a pre-application or site assessment: Some programs ask homeowners to get a site assessment or pre-approval before work begins. This helps determine whether the proposed work is eligible.
- Get quotes from licensed contractors: Obtain detailed estimates that list materials, labour, permits, and any associated work. The City may require multiple quotes or a contractor on an approved list.
- Submit an application: Complete the grant application form with required attachments (quotes, photos, proof of ownership, historic flooding documentation if necessary).
- Receive approval: If approved, the city will outline what portion they will reimburse and any conditions (e.g., inspection after work).
- Complete the work: Hire a licensed contractor, obtain required permits, and complete the installation or replacement as approved.
- Provide final documentation: Submit final invoices, paid receipts, and, if required, inspection certificates to the City to receive reimbursement.
Working with a plumber who knows the local process can simplify the steps. Licensed contractors familiar with London’s requirements can help prepare quotes that match grant guidelines and can often coordinate permits and inspections.
Sump Pump Installation and Replacement: What Homeowners Should Know
Installing or replacing a sump pump is more than dropping a pump in a pit. Getting it right maximizes effectiveness and ensures compliance with municipal codes — important for grant eligibility too. Here are the key technical and practical points:
Sump Pump Types
- Submersible pumps: Installed inside the sump pit and submerged in water. They’re quieter, generally more powerful, and better for limited spaces.
- Pedestal pumps: The motor sits above the pit; the pump sits below. They’re easier to service but can be noisier and less durable in long-term heavy-duty use.
Sizing and Capacity
Pump selection hinges on how much water the system must move and how fast. Capacity is measured in gallons per minute (GPM) or gallons per hour (GPH). A professional evaluation will consider:
- Basement area and expected inflow (weeping tile, groundwater, surface drainage)
- Vertical distance to discharge point (head height)
- Frequency and intensity of local storms
Picking a pump that’s too small will leave a homeowner vulnerable; too large can be unnecessarily costly. A licensed plumber can recommend an appropriately sized unit.
Battery Backup and Power Reliability
Power outages often occur during heavy storms when pump performance is most needed. A battery backup or generator-ready configuration keeps the pump running during outages. For many homeowners, adding a battery backup is one of the most cost-effective ways to maintain protection through severe weather.
Check Valves and Proper Discharge
Installing a check valve on the discharge line prevents water from flowing back into the pit after the pump stops. Discharge routing must also meet city bylaws — typically directing water to grade, storm sewers (where permitted), or other approved outlets at a safe distance from the foundation. Freezing and clogging of discharge lines should be avoided through correct routing and insulation where needed.
Sump Pit Installation Details
- Pit size and depth must be appropriate for pump type and expected inflow.
- Pit should be lined and stable to prevent collapse and reduce debris build-up.
- A secure lid and alarm sensors help reduce humidity, debris entry, and provide early warnings.
Permits and Inspection
Local plumbing or building permits may be required. Inspection by city officials or a certified inspector often follows installation — both to verify code compliance and to satisfy grant requirements. Using licensed plumbers who handle permit paperwork avoids common delays and missteps.
Costs, Grant Amounts, and Financial Considerations
Exact grant amounts and cost-sharing rules change, so homeowners should consult the City of London website for up-to-date figures. Still, it’s helpful to understand typical costs and how a grant might affect a household budget.
Typical Costs (Illustrative Ranges)
- Sump pump unit (standard): $350–$900+
- Battery backup system: $400–$1,200+
- Labor and installation: $900–$2,500+ (varies with pit complexity and access)
- Permit fees and inspections: $50–$300
- Additional drainage or discharge work: $350–$1,000+
These are general ranges. A complete installation with battery backup and additional discharge improvements can push total project cost above $2,500–$6,000+ in some cases.
*Prices are just illustrative ranges, for accurate quotes and fees for complete service and installation please reach out to us directly!
How Grants Typically Help
- Grants often reimburse a percentage of eligible costs (for example, 50%) or provide a set maximum dollar amount. Homeowners should confirm the exact percentage or limit for London’s program.
- Some programs reimburse after work is complete and proof is submitted; others provide partial pre-approval funding.
- Having a grant can significantly lower out-of-pocket costs for adding features like a battery backup that many homeowners would otherwise skip.
Tax Considerations and Insurance
Grant reimbursement may have tax implications; homeowners should consult a tax advisor if unsure. Additionally, homeowners should notify their insurance provider after installing flood-mitigation measures — in some cases, doing so can influence premiums or improve coverage for future claims.
Choosing a Contractor: Tips and What to Expect
Selecting the right licensed plumber matters for quality, warranty protection, and grant compliance. Here are practical tips when hiring a contractor for sump pump work.
What to Look For
- Licensing and insurance: Ensure the plumber is licensed to do plumbing work in Ontario and carries liability insurance.
- Experience with sump systems: Look for contractors who regularly install sump pumps and battery backups — experience reduces surprises.
- Familiarity with local rules: A contractor who has worked on projects eligible for the City of London’s grant will understand required documentation, permits, and inspections.
- Clear, itemized quotes: Quotes should list materials, labour, permit costs, and any exclusion or contingency items.
- References and reviews: Ask for recent references or read online reviews from local homeowners.
Questions to Ask a Prospective Contractor
- Will you handle permit applications and scheduling inspections?
- Do you provide a written warranty for parts and labor? How long is it?
- Do you include the checks, alarms, and check valves needed for a complete system?
- Can you supply documentation in the format required by the City for grant reimbursement?
- How do you protect the property during excavation and installation?
What to Expect During Installation
Typical installation steps include excavation of the pit area (if one doesn’t already exist), installation or replacement of the pump, connection of discharge lines with a check valve, testing of the unit, and cleanup. If a battery backup is installed, the electrician or plumber will wire it and show the homeowner how to test the system and monitor battery status.
How Jumbo Plumbing Can Help
Homeowners in London, St. Thomas, Woodstock, Ingersoll, and surrounding communities can call on Jumbo Plumbing for licensed, professional sump pump services. With 24/7 availability for emergencies, the company offers:
- Site assessments to determine the best sump pump solution for a property
- Detailed, itemized quotes that meet municipal grant documentation requirements
- Professional sump pump installations and replacements, including submersible and pedestal models
- Battery backup system installation and testing
- Assistance coordinating permits and inspections
- Maintenance plans and emergency pump repairs
Jumbo Plumbing’s technicians are experienced with the realities of basement flooding in the region and can recommend appropriate measures — not just to pass a grant checklist, but to provide long-term protection tailored to the home’s drainage, foundation, and risk level. For homeowners aiming to apply for the City of London’s basement flooding grant, working with a contractor who understands the program helps ensure the work qualifies for reimbursement and that required documentation is completed correctly.
Preventive Maintenance and Long-Term Strategies to Avoid Basement Flooding
Installing a sump pump is a powerful step, but it’s most effective as part of a layered approach to reducing basement flood risk.
Monthly and Seasonal Maintenance
- Check the pump monthly—pour a bucket of water into the pit and confirm the pump runs and discharges properly.
- Clean the pit annually to remove silt, gravel, and debris that could clog the pump.
- Test the battery backup quarterly and replace batteries per manufacturer recommendations (usually every 3–5 years).
- Inspect discharge lines for blockages and freeze protection before winter and during thaw cycles.
Landscape and Grading Adjustments
Keeping soil graded away from the foundation and ensuring downspouts direct water several feet from the house reduce the volume of groundwater reaching the foundation. Simple yard changes can reduce long-term pressure on a sump system.
Downspout Extensions and Rain Gardens
Adding downspout extensions, dry wells, or rain gardens helps manage surface water flows and reduces the amount of water reaching the foundation. These measures both protect the home and can be more environmentally friendly by encouraging infiltration in safe areas.
Sewer Backflow Prevention
For homes at risk of sewer backups, installing a backwater valve or related device helps prevent sewage from entering the basement during municipal sewer surges. These devices are often eligible under municipal grant programs as well.
Case Studies and Examples
Real-world examples help illustrate how grant-assisted projects work and what impact they can have:
Example 1 — Older Home with Frequent Weeping Tile Overflow
A homeowner in a low-lying neighborhood experienced regular basement seepage during spring thaw. After documenting past issues and applying for the city grant, the homeowner received pre-approval for a sump pit and submersible pump with battery backup. A licensed plumber replaced a clogged weeping tile connection, installed a larger-capacity submersible pump, and routed discharge to a permitted outlet. The homeowner submitted invoices and passed inspection, receiving reimbursement for the eligible portion of costs. Result: no further seasonal seepage and peace of mind during summer storms.
Example 2 — Replacing an Old Pump Before a Big Storm Season
A family had a 12-year-old pedestal pump that often struggled during heavy rain. After checking London’s program details, they applied and were approved for partial funding to replace the pump and add a battery backup. The contractor provided a grant-compliant invoice and handled permits. The new system handled a major storm later that year, while the backup maintained operation through a brief power outage.
Summary
The City of London’s Basement Flooding Grant Program helps homeowners reduce basement flooding risk by supporting eligible mitigation work, such as sump pump installation and replacement. To take full advantage of the program, homeowners should:
- Review the City of London’s official grant page for current program details, eligibility, and funding amounts
- Get pre-approval if the program requires it and secure detailed quotes from licensed contractors
- Choose appropriately sized, code-compliant sump pumps with battery backup where practical
- Work with licensed plumbers who can handle permits, inspections, and grant documentation
- Maintain systems regularly and combine sump pumps with grading and other preventive measures for best results
Local licensed plumbing professionals, like those at Jumbo Plumbing, can guide homeowners through assessment, installation, and the grant process — helping ensure the job is done right and documented correctly for reimbursement. When basement flooding is a concern, timely action and the right support make a tangible difference in protection and long-term costs.
Frequently Asked Questions
How much of the installation cost will the City of London cover?
Grant coverage varies and can change over time. The typical approaches are either a percentage of eligible costs or a fixed maximum dollar amount. Homeowners should consult the City of London’s Basement Flooding Grant Program page for the most current funding details and limits before starting any work.
Does the work need to be done by a licensed plumber to qualify?
Yes. Most municipal programs require that sump pump installations and similar plumbing work be completed by a licensed contractor so that permits, inspections, and warranty requirements are properly handled. This helps protect the homeowner and ensures the work meets code and grant conditions.
Is a battery backup necessary?
While not always mandatory, a battery backup is strongly recommended. Power outages are common during severe storms, which is exactly when a pump is needed most. Battery backups provide extra security and are often eligible for grant funding as part of a comprehensive protection solution.
How long does the application and reimbursement process take?
Timelines vary. Pre-approval (if required) and permit processing can take several weeks, and final reimbursement usually happens after completion, inspection, and submission of invoices — often within a few weeks to a few months, depending on municipal processing times. Starting early and submitting complete documentation speeds up the process.
Will installing a sump pump affect my home insurance?
Installing flood mitigation measures like a properly installed sump pump and battery backup may improve a homeowner’s risk profile; some insurers might offer reduced premiums or prefer homes that have taken action to mitigate flooding. Homeowners should notify their insurance provider about upgrades and ask about potential impacts on coverage or rates.

