Greener Homes, Cooler Streets (Hamilton, ON): How Green Venture Builds Climate Resilience in Hamilton

Introduction

Green Venture is a non-profit environmental organization based in Hamilton, Ontario [1]. Founded in 1994 as a local government initiative to promote sustainable living, it has grown into a key community resource for environmental action [2]. Green Venture’s mission is to inspire and equip Hamilton residents to take individual and collective action to preserve the natural environment, reduce greenhouse gas emissions, and build a community resilient to climate change [3]. The organization operates out of the EcoHouse, a renovated 1850s farmhouse that serves as both office and interactive demonstration site for sustainable practices [4, 5].

2025 marks the 30th anniversary of Green Venture's operations, serving over 15,000 Hamilton residents annually [11]. Under its current strategic plan (2025–2030), Green Venture upholds core values including Hope (combating climate anxiety through action), Collaboration (partnerships across sectors and empowering youth), Climate Justice (focusing on underserved communities disproportionately impacted by climate change), Accountability (measuring outcomes), Resourcefulness (hands-on practical solutions), and Commitment to Reconciliation with Indigenous peoples [10]. These guiding values shape the organization’s programs and its vision for “Hamilton as a resilient, low-emission community with a healthy natural environment” [10]. In the following sections, we provide background on the local challenges that Green Venture addresses, describe the affected community and its needs, and outline Green Venture’s initiatives in response to these challenges.

Background: Key Local Challenges

Hamilton faces interrelated social, economic, and environmental challenges that Green Venture has targeted through its mission. Three of the most pressing challenges are: (a) climate change and greenhouse gas emissions, (b) extreme weather impacts and stormwater management, and (c) environmental inequities among different communities. These underlying issues form the context for Green Venture’s work.

(A) Climate change and greenhouse gas emissions:

Like many cities, Hamilton has recognized a climate emergency and set goals for deep emissions reductions. The City’s Climate Action Strategy calls for net-zero carbon emissions by 2050 in a way that “leaves no one behind” [12]. A major contributor to Hamilton’s emissions is energy use in buildings and homes [13]. In fact, by 2050, residential and commercial buildings are projected to represent the second-largest source of emissions in Hamilton, primarily from the use of natural gas for space and water heating, particularly in older, less efficient homes [14]. With approximately three-quarters of the city’s current homes expected to still be in use by 2050, improving energy efficiency in these buildings is a critical challenge; Canada-wide estimates suggest about 70% of the buildings that will be in use in 2050 are already standing [15].

Transportation and heavy industry are also emission sources, but residential energy use is an area where community-level action can make a significant impact [15]; in 2023, Hamilton estimated 4.85 MtCO2e from buildings in total (including residential/commercial/industrial building energy) and 1.72 MtCO2e from transportation, with residential buildings contributing approximately 0.78 MtCO2e [13]. Hamilton’s climate plans emphasize both mitigation (emission reduction) and adaptation, stressing that immediate action is needed to meet targets and avoid severe future costs [12, 16]. Green Venture’s mandate directly aligns with this challenge by helping residents reduce energy consumption and adopt low-carbon solutions in their homes and daily lives.

(b) Extreme weather impacts and stormwater management:

Hamilton’s changing climate is already bringing more frequent heavy rain events, flooding, and heat waves [17]. Intense rainfall and flooding have become a serious concern in the community. Over the past decade, residents have endured multiple heavy rainstorms that caused flooded streets and basements, straining infrastructure. The City of Hamilton reports that in just the past five years, rainstorms have “lasted longer, been more intense and occurred more frequently than in previous years,” leading to basement flooding and sewer overflows in many neighborhoods [18]. Activists note that what were historically 100-year storm events are now expected far more often due to climate change, increasing the risk of property damage and costly clean-ups [19].

Urban stormwater management is a challenge because much of Hamilton’s older city areas have extensive paved surfaces and aging combined sewers [20, 21]. During downpours, storm runoff can overwhelm sewers, causing sewage backups or pollution in local waterways [21]. At the same time, extreme heat is an emerging issue: Hamilton sees more heat waves in summer, and during heat alerts, nighttime temperatures often remain high (“tropical nights”), preventing buildings from cooling down [17, 22]. Residents without air conditioning or access to green spaces are especially vulnerable to heat-related illnesses. Notably, the city has documented “swelteringly hot” conditions in some apartment units and initiated a subsidy program for low-income households to obtain air conditioners (pilot rebate up to $350) [23]. These climate impacts – flooded basements, heat-stressed buildings, and even episodes of poor air quality (exacerbated by pollution and wildfire smoke) – are very tangible to Hamiltonians; for example, in June 2023 Hamilton recorded “high-risk” Air Quality Health Index (AQHI) readings during regional wildfire smoke episodes [24, 25].

(c) Environmental inequities in the community:

A critical social dimension of Hamilton’s environmental challenges is that their impacts are not felt evenly across all communities. Environmental justice issues have become apparent in the disproportionate impact of climate change and pollution on certain populations. In Hamilton, lower-income and historically marginalized neighborhoods tend to have fewer environmental amenities and greater exposure to hazards. For example, urban tree canopy coverage – which provides cooling shade, cleaner air, and stormwater absorption – is much lower in some inner-city areas and public housing complexes than in affluent neighborhoods [26, 27].

A recent “tree equity” analysis found that maps of tree cover in Hamilton closely mirror maps of income and race; wealthier areas are lush with trees, while low-income areas have sparse canopy [28]. This means residents in some downtown and industrial-adjacent districts suffer hotter streets, poorer air quality, and less flood protection from greenery [26, 27]. Similarly, households with limited financial means or living in older multi-unit buildings often lack resources to adapt – they may not afford air conditioning, insulation, or flood-proofing upgrades, leaving them more vulnerable to heat and water damage [29]. As one local environmental advocate observed, “people who are already marginalized are impacted more deeply” by climate threats [19].

The City of Hamilton has acknowledged these inequities and is developing a climate justice framework in collaboration with impacted communities [12, 19]. Experts recommend focusing resilience efforts on highly deprived neighborhoods with limited access to air conditioning and green spaces, to ensure that adaptation measures reach those most in need [21]. In sum, a key challenge is to bridge this environmental gap: to bring resources, green infrastructure, and climate solutions to the underserved urban areas of Hamilton.

The Affected Community and Its Needs

The issues above affect a broad cross-section of Hamilton’s population, but certain groups and areas are especially impacted. Hamilton is a diverse city of about 570,000 people (569,355 in the 2021 Census, up 6% from 2016) [30]. The affected community in the context of Green Venture’s work can be described through a few key demographic and geographic lenses:

Urban core neighborhoods:

Many of Hamilton’s environmental challenges are more pronounced in the older urban core (lower city) and industrial-adjacent neighborhoods [31]. These areas—such as parts of East Hamilton, the Barton Street corridor, and downtown—are home to lower-income families, seniors, and newcomers [32]. They are characterized by aging housing stock (often poorly insulated), minimal tree cover, and extensive hard surfaces (concrete and asphalt); the City’s Urban Forest Strategy notes uneven canopy distribution with extensive paved surfaces and targets a 40% canopy by 2050 to mitigate heat and stormwater risks [33]. Residents in this area have experienced frequent basement floods during heavy rains, as inadequate drainage and combined sewers struggle to manage runoff. Older areas of Hamilton are served by combined sewers, and the City has adopted a Flooding & Drainage Improvement Framework to mitigate community flooding and combined sewer overflows [34].

For example, parts of Barton Street East have traditionally been a “sea of asphalt and concrete” with minimal green spaces to absorb stormwater or help cool the area [35]. Residents in these densely populated areas face a greater risk of water damage to homes and infrastructure during storms. They also experience hotter microclimates in summer because of the urban heat island effect; Hamilton Public Health issues Heat and Extended Heat Warnings based on threshold temperatures/humidex and encourages access to “cool places” during such events [36].

It is not uncommon for people living in apartments or older houses without air conditioning to report dangerously hot indoor temperatures during heat; tenant surveys and legal-health partners have documented unsafe indoor temperatures in Hamilton rentals during extreme heat, particularly where AC is absent [37, 38]. Health officials have noted that heat stress and poor air quality (exacerbated by emissions from nearby industry and traffic) could contribute to asthma and other health issues in parts of Hamilton’s inner city. As such, provincial and municipal analyses attribute Hamilton’s PM2.5 and other air pollutants to both local traffic/industrial sources and regional transport [31, 25]. These residents need solutions like better stormwater management, cooling amenities, and home retrofits, but often lack the financial means or knowledge to implement them.

Low-income and vulnerable households:

Across Hamilton, low-income households (including many seniors on fixed incomes and single-parent families) are particularly affected by environmental challenges. Recent official figures from 2020 indicate that 9.4% of Hamiltonians were considered low-income according to the Low-Income Measure (LIM-after-tax), approximately 12% of racialized people fell into this category, and 7.7% based on the Market Basket Measure (MBM) [39, 40]. Many of these individuals reside in older homes or subsidized housing that is energy-inefficient and located in less climate-resilient areas. For instance, Hamilton’s public housing provider (CityHousing Hamilton) manages apartment buildings that until recently had little tree cover. Inventories at 20 CityHousing sites in 2021 and follow-up plantings in 2022–2023 documented the need to add shade trees at multiple properties [28]. During extreme heat events, these conditions put residents (often elderly or those with chronic illness) at serious risk [36, 38, 37].

Wider community and future generations:

While specific groups can be identified as most vulnerable, Green Venture ultimately serves the wider Hamilton community, including youth who represent future generations [41]. Children and youth in Hamilton are an important part of the affected community, as they will inherit the long-term consequences of today’s environmental actions or inaction. Local youth have voiced concerns about climate change and shown eagerness to be involved in solutions. For instance, in August 2025, the Hamilton Youth Town Hall reported shared goals from youth and councillors to “design for future generations” when tackling climate challenges [42]. At the same time, not all young people have opportunities to learn about sustainability or participate in environmental projects through formal education [43]. Green Venture addresses this need with dedicated Child and Youth Programs that support eco-education and leadership development for young people.

Green Venture’s Programs and Initiatives Addressing Local Challenges

To tackle the challenges outlined above, Green Venture delivers a wide range of programs and initiatives that directly benefit the community and environment. In the past five years (2020–2025), the organization has focused on practical, hands-on projects and education campaigns in three main areas: (a) green infrastructure for stormwater and climate adaptation, (b) energy efficiency and low-carbon living, and (c) community education, waste reduction, and engagement. Each of these program areas corresponds to one or more of the identified local needs, turning broad goals into concrete action on the ground.

(a) Green infrastructure and climate adaptation

One of Green Venture’s flagship efforts is improving stormwater management and urban green space to reduce flooding and build climate resilience. In 2023, Green Venture partnered with the City of Hamilton to launch the Rain Ready Hamilton program – a residential stormwater retrofit rebate initiative. Funded by the City’s new stormwater fee, Rain Ready Hamilton offers homeowners up to $5,000 in rebates for installing approved low-impact development features such as rain gardens, permeable pavement driveways, soakaway pits, or cisterns on their property. Green Venture administers this program on behalf of the City, handling public education, application intake, and site coaching [44, 45]. By incentivizing property owners to manage rain where it falls, the program aims to “reduce stormwater runoff, decrease flooding risks, and improve overall water quality” in Hamilton’s neighborhoods [44]. Green Venture has been hosting information sessions, how-to workshops, and even an industry open house (for contractors and landscapers) to promote Rain Ready Hamilton [46]. This initiative addresses the flood challenge by empowering residents as part of the solution – each rain garden or permeable surface helps absorb storm surges that would otherwise overwhelm sewers.

In parallel with residential rebates, Green Venture also undertakes community-scale green infrastructure projects. Through the Depave Paradise program (an initiative of Green Communities Canada implemented by Green Venture locally), the organization has been “depaving” unused paved areas and converting them into vegetated spaces. A notable example is the ongoing transformation along Barton Street East – a historically underserved area. Since 2020, Green Venture staff and hundreds of volunteers have removed sections of asphalt and concrete from at least five sites on Barton and nearby Cannon Street, replacing barren lots with community gardens, trees, and native plant beds [35].

These new green spaces not only beautify the neighborhood but also function as natural infrastructure: the soil and plants absorb stormwater, reducing runoff. In fact, the cumulative impact is measurable – as of 2023, about 1,435 square meters of former pavement at 13 sites citywide have been converted to green installations, together capable of absorbing an estimated 1.6 million liters of stormwater annually [35]. On Barton alone, depaving five boulevard strips eliminated roughly 438 m² of asphalt and added over 850 native trees, shrubs, and pollinator plants to the streetscape [35].

These changes help cool the area during summer and create habitat for urban wildlife (butterflies, bees), addressing environmental and social needs simultaneously. Green Venture’s urban greening projects often involve community members in the work – for example, a depave event at a local library drew approximately 40 volunteers who completed the task in just one hour [47].

Beyond depaving, Green Venture has also led community tree planting and stewardship events. Through its Hamilton Tree Equity Project (2021–2023), it worked with partners to inventory trees in low-canopy areas and planted shade trees in priority locations (such as the yards of CityHousing apartment buildings noted earlier). These efforts contribute to the City’s Urban Forest Strategy goal of expanding canopy cover, while directly benefiting vulnerable residents with cooler, healthier surroundings [28].

Taken together, Green Venture’s green infrastructure initiatives – from household rainwater retrofits to neighborhood-scale depaving and tree planting – are reducing local flood risk and heat islands. They demonstrate how a non-governmental organization (NGO) can effectively deliver climate adaptation services at the community level. The tangible outcomes (millions of liters of runoff diverted, new green spaces created) are evidence of progress on the previously identified challenges of stormwater and extreme weather. Moreover, these projects often prioritize “under-natured” areas of Hamilton, thereby also advancing equity by improving environmental conditions in places that need it most.

(b) Energy efficiency and low-carbon living

In support of Hamilton’s emission-reduction challenge, Green Venture runs extensive programs to help residents reduce energy use, retrofit their homes, and adopt sustainable lifestyle practices. A cornerstone of this work is the Home Energy Evaluation service. Green Venture has trained, certified Energy Advisors who conduct EnerGuide home energy Audits for local homeowners (in partnership with Natural Resources Canada’s program). During an energy audit, an advisor assesses a house from attic to basement, testing insulation levels, air leakage, furnace efficiency, etc., and then provides the homeowner with an EnerGuide rating and a customized report of upgrade recommendations [9].

Green Venture’s role has been to make it easy for Hamilton residents to access these audits and understand the results. The audit report gives homeowners a clear roadmap of how to improve energy efficiency – for example, by adding attic insulation, sealing air leaks, upgrading windows, or installing a heat pump. Green Venture not only conducts the evaluations but also offers follow-up energy coaching to guide residents through retrofit planning, rebate applications, and contractor selection. Such one-on-one support can significantly enhance the adoption of deep energy retrofits, which are crucial because time is critical for reducing emissions from Hamilton’s aging housing stock.

In recent years, the organization has expanded its retrofit support services. It launched a Heat Pump “Right-Sizing” Service to address a common issue where newly installed heat pumps are improperly sized (over- or under-capacity), causing inefficiency and higher costs. By consulting on sizing, Green Venture helps homeowners and contractors choose HVAC systems that can save families up to $2,000–$3,000 per year in heating costs while cutting emissions (through electrification of heating) [49, 50].

This level of technical assistance is relatively unique for a community organization, highlighting Green Venture’s expertise in climate mitigation at the household scale. The cumulative impact of these efforts is significant: over the past 20+ years, Green Venture has provided energy retrofit guidance to thousands of Hamilton residents, resulting in reduced energy consumption, lower greenhouse gas outputs, and cost savings for residents [11].

Additionally, by combining technical services with education and advocacy, Green Venture addresses the challenge of climate change mitigation holistically. The direct outcomes (e.g., improved EnerGuide scores for homes, participants adopting renewable energy, etc.) help Hamilton progress toward its climate targets, while the educational components build a culture of sustainability within the community.

(c) Community Education, waste reduction, and engagement

A third pillar of Green Venture’s work is fostering a culture of sustainability and waste reduction through public engagement and education programs. Recognizing that lasting change requires informed and motivated citizens, Green Venture places heavy emphasis on outreach events, workshops, and hands-on activities that make sustainable living accessible. One notable focus area is waste reduction and the circular economy. Over the past five years, Green Venture has intensified its initiatives to address consumer waste – an environmental challenge that intersects with both ecological and social issues. In Canada, around 1.3 million tonnes of used or waste clothing are generated annually, with roughly 76% ending up in landfills. Textiles are a key focus in national circular economy efforts. Additionally, as much as 95% of textile waste in landfills could potentially be reused or repurposed [51].

As such, Green Venture hosts semi-annual Clothing Swap events to address textile waste and fast fashion. These events invite community members to drop off gently used clothing and then “shop” from the assortment of donated items for free. At a Fall 2025 swap held at EcoHouse, the response was tremendous: approximately 900 clothing items were collected, and nearly all found new homes with attendees, effectively diverting considerable amounts of garments from the landfill and giving them a second life [52]. These events (Green Venture’s clothing swaps) not only reduce waste but also educate participants on the environmental impacts of the fashion industry.

In addition to waste-focused events, Green Venture leads numerous gardening and nature education initiatives that engage the community, including Seedy Saturday, the Seed Library, and School and Youth Programs. By facilitating these hands-on experiences, Green Venture connects people to the land and to one another, reinforcing the land-based and local perspective that underpins much of its work. All these educational efforts complement the on-the-ground programs, creating a feedback loop where community input and learning continuously shape Green Venture’s approach. The breadth of Green Venture’s initiatives – spanning climate adaptation, emissions reduction, waste diversion, urban agriculture, and youth engagement – illustrates a comprehensive response to Hamilton’s community needs.

Turn Community Insight into Action

Use this Community Knowledge Publication to design participatory, impactful research. Plan your knowledge mobilization with ScienceReach’s Science Communication (SciCom) Tool—your plan will be accessible online on ScienceReach, making it visible to community partners and research funders. For step-by-step support, refer to our guide, "Our Guide to Using Community Knowledge Publications and the SciCom Planning Tool."

Sample questions for engaged research:

1. What information, financial, or logistical factors most influence uptake of home retrofits and rain-readiness measures across different housing types—and which co-designed supports improve adoption?

2. How do block-level green infrastructure additions (e.g., depaving, rain gardens, new trees) affect surface temperatures, stormwater runoff, and resident well-being over 6–12 months?

3. How do youth-led climate projects shape climate efficacy, civic participation, and household behaviors—and what supports sustain participation over time?

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