Fire-wise, water-wise: A Northern California HOA landscaping guide

The importance of planning a landscape that supports both fire safety and conservation

Wildfire safety and water conservation can sometimes feel like competing priorities. Use less water, and boards may worry that plants will dry out and become fuel. Use more water, and costs rise while working against California's long-term conservation goals.

For Northern California communities, those concerns are becoming harder to ignore. Updated 2025 CAL FIRE hazard maps show significant growth in areas classified as having very high fire risk, including parts of Napa and Sonoma counties, as well as communities throughout Wine Country, the East Bay hills and the Sierra foothills. As wildfire risk continues to evolve, landscaping decisions that once seemed routine now play an important role in protecting people, property and community assets.

The good news is that a thoughtful Northern California HOA landscaping strategy can support both safety and sustainability. Success is not about removing every lawn or replacing every plant. It's about choosing the right plants, putting them in the right locations, using water efficiently and maintaining the landscape so dead vegetation doesn't become fuel.

The financial impact matters, too. A FirstService Residential benchmark of 69 California master-planned communities found that landscaping and pest control accounted for 10.8% of sampled budgets, while water and sewer expenses represented another 5.8%. While these figures are not industry standards, they highlight why landscaping decisions deserve careful board attention.
 

Northern California HOA landscaping tips

Start with a property assessment

Before approving a landscape redesign, walk the property with your landscape professional, local fire authority or a UC Cooperative Extension advisor. In Northern California, regional UCCE offices such as those serving Marin, Napa and Sonoma counties offer valuable guidance on wildfire resilience and landscape management.

As you tour the property, look closely at buildings, slopes, fences, decks, irrigation zones, mature trees and areas where vegetation creates a continuous path toward structures.

It's also important to avoid relying on generic lists of "fire-resistant" plants. According to CAL FIRE, a plant's flammability depends on several factors, including maintenance, moisture levels, location and the amount of dead material surrounding it. Even native and drought-tolerant plants can become a risk if they are stressed, overgrown or planted too close to buildings.

A thorough assessment gives your board a solid foundation for setting priorities, evaluating proposals and explaining future changes to residents.
 

Let defensible space guide the design

Defensible space is the buffer between structures and surrounding vegetation. When properly maintained, it can help slow wildfire spread, reduce ember exposure and provide firefighters with a safer environment in which to work.

CAL FIRE organizes defensible space into three primary zones:

• Zone 0 (0 to 5 feet): Stick to gravel, pavers, concrete or other noncombustible materials here. Clear out dead plants, debris and combustible mulch near buildings and decks.
   
• Zone 1 (5 to 30 feet): Keep things lean, clean and green. Give plants breathing room, pull dry material and don't let shrubs turn into a ladder up into tree canopies.
   
• Zone 2 (30 to 100 feet): Space out vegetation, keep trees maintained and clear away built-up leaves, needles and branches.

Timing is important as well. Fire season across much of Northern California typically peaks between July and October, making spring and early summer ideal times to complete major maintenance work. Keep in mind that local fire districts and municipalities may have requirements that exceed state standards, particularly in Wine Country and foothill communities.
 

Make every gallon count

Water-wise landscaping doesn't mean allowing valuable trees and plants to decline. In fact, drought-stressed vegetation often becomes more vulnerable to fire because it accumulates dead material more quickly.

Instead, boards should focus on directing water where it provides the greatest benefit. Healthy, established trees and key landscape features may deserve priority, while underused decorative areas may require less irrigation.

Simple improvements can make a meaningful difference, including:

• Grouping plants with similar water needs
   
• Installing drip irrigation where appropriate
   
• Separating planting beds with noncombustible features
   
• Regularly inspecting controllers, valves and irrigation lines
   
• Adjusting irrigation schedules based on the season, soil conditions and slope

Many Northern California water providers, including East Bay MUD and the Bay Area Water Supply and Conservation Agency, also offer rebates, educational programs and conservation resources that may help offset project costs.

These adjustments can reduce runoff, lower water usage and support the healthy landscape conditions needed for a fire-wise community.
 

Get ahead of California's nonfunctional turf law

California's AB 1572 gives boards another reason to evaluate common-area landscapes. Beginning January 1, 2029, HOAs may no longer use potable water to irrigate nonfunctional turf in common areas.

The law does not require communities to remove all grass. It also allows continued irrigation of trees and other perennial, non-grass plantings. Turf used for recreation, gatherings and other community activities is generally treated differently under the law.

Now is a good time to inventory common-area turf and document how each area is used. For example, a narrow grass strip near an entrance may require a different long-term strategy than a park or gathering space that residents actively enjoy.

Communities with more than 5,000 square feet of irrigated common area may also face additional certification requirements. Because local water agencies often apply their own conservation rules alongside state regulations, boards should confirm requirements before adopting a compliance plan.
 

Build maintenance into the contract and the budget

Fire-wise landscaping is not a one-time project. It requires consistent attention and ongoing maintenance.

Vendor contracts should clearly address:

• Dead vegetation removal
   
• Pruning schedules
   
• Irrigation inspections
   
• Weed management
   
• Tree maintenance
   
• Defensible space upkeep

Boards should also plan for future expenses such as plant replacement, irrigation upgrades and major tree work. Regular site reports and before-and-after photos can help document progress and provide valuable support during insurance discussions.

This is particularly important as wildfire-related insurance challenges continue to impact Northern California communities. CAI encourages boards to work proactively with insurance professionals to understand evolving coverage requirements and risk-reduction opportunities.
 

Bring residents into the conversation

Residents often support both conservation and wildfire preparedness, but they may still have concerns about losing shade, open space or the appearance of their community. That's why communication is so important.

Explain what is changing, why it is changing and how the plan supports safety, sustainability and long-term financial health. Share project timelines, landscape plans and maintenance expectations before work begins.

When residents understand the reasoning behind landscape decisions, they are more likely to see drought-tolerant landscaping as intentional and attractive rather than neglected.
 

Take the next step

The best place to start is with a joint landscape and wildfire-risk assessment. From there, your board can develop a phased plan with clear priorities, realistic budgets and a communication strategy that keeps residents informed along the way.

FirstService Residential works alongside HOA boards throughout California to help coordinate landscaping strategies, vendor partnerships, budgeting and resident communication. If your community is evaluating its landscaping approach, our team can help you create a plan that supports wildfire resilience, water conservation and your long-term community goals.

Contact us today to learn more about how we can support your California community.

This information is provided for general informational purposes only and is not intended to constitute, and should not be relied upon as, legal, regulatory, financial, or operational advice, or as a representation or guarantee of any specific services, capabilities, or outcomes. Property management needs, regulatory requirements, market conditions, and available services vary by jurisdiction, property type, and community. FirstService Residential provides services through locally based affiliates and associates, and services and results may vary by community, region, contractual terms, and applicable law.