Planning commission approves Montalvo Apartments EIR and entitlements for 50-unit rental development

The Sonoma City Planning Commission unanimously approved the entitlements for the Montalvo Apartments project on Sept. 18, voting to certify the final environmental impact report (EIR), adopt a Mitigation Monitoring and Reporting Program (MMRP) and approve accompanying design review, a density bonus request, a demolition permit and a parcel merger for a 50-unit rental community at 19320 Sonoma Highway.

The project site would consolidate two parcels into a 2.15-acre development and remove an existing single-family house that staff determined eligible for the California Register of Historical Resources. The applicant, Denova Homes, proposed seven buildings with a mix of two- and three-story units and a total of 50 rental apartments; 25 percent of the units (13 apartments) would be deed-restricted affordable, distributed across income categories labeled by the applicant as extremely low, very low and low income.

Why it matters: the commission had to weigh unavoidable environmental effects tied to demolition of an eligible historic resource against the public benefits the city found the project would provide. Because the EIR found a significant, unavoidable impact to historic resources, the planning commission adopted a statement of overriding considerations to approve the project while also adopting the MMRP that lists mitigation measures the city will implement as conditions of approval.

Staff presentation and project details

City staff described the project timeline, environmental review triggers and the entitlements requested. According to staff, the project originated with a preliminary SB 330 housing application submitted in 2021 under the state Housing Crisis Act of 2019; that filing vested certain development fees and objective standards at the time the preliminary application was deemed complete. After supplemental studies and a CEQA process that included a draft EIR, the final EIR was published in August 2025.

Staff noted the site sits on the east side of Highway 12, near multifamily and single-family neighborhoods and commercial properties to the north and west. The applicant proposes 50 rental apartments in seven buildings, providing approximately 89 parking spaces primarily within garages and roughly 24,000 square feet of common open space, including a central multipurpose turf area and a children's play zone. Twenty-five percent of units (13) are proposed as deed-restricted affordable housing: the staff and applicant materials list 8 low-income, 3 very-low-income and 2 extremely-low-income units.

The EIR identified demolition of the existing home as a significant environmental impact due to the house's historic-eligibility determination; the EIR therefore analyzed project alternatives. The consultant and staff explained the environmentally superior alternative was an on-site relocation of the historic structure, but that alternative was judged financially infeasible and inconsistent with project objectives given structural, hazardous materials (lead and asbestos) and relocation cost estimates provided in the record.

Applicant and public comments

Carrie Watt, director of entitlements for Denova Homes, summarized revisions the applicant made since the initial 2021 study session and described the project's unit mix, parking layout and landscaping approach. She said the affordable units would be dispersed across buildings and that the project meets applicable development standards except for one requested concession to the floor-area ratio (0.70 to 0.71) and one waiver for a portion of a trash enclosure setback. Watt described site constraints (grading, sewer connections, retaining walls and tree protection measures) and said her team intends to begin construction next year, subject to final approvals and standard biological and construction-season constraints.

Two members of the public spoke in favor of the project during the hearing. Omar Lopez, policy coordinator at Generation Housing, said the project "represents the kind of thoughtful housing Sonoma needs" and urged the commission to certify the EIR and approve the project. Caitlin Cornwall of the Sonoma Valley Collaborative also supported the development, while noting the collaborative intends to monitor that the dedicated below–market-rate units serve intended households over time.

Commission discussion and action

Commissioners asked staff and the applicant about SB 330 protections, the nature and scope of the density bonus and the difference between waivers and concessions. Staff and the city attorney explained SB 330 (the Housing Crisis Act framework) preserved the project's vesting of objective standards when the preliminary application was deemed complete and that density-bonus concessions and waivers are allowed by state law when projects provide qualifying affordability. Staff clarified traffic study findings — approximately 350 vehicle trips per day, about 20 AM-peak and 28 PM-peak hour trips — and outlined standard construction-period mitigation for noise, dust and traffic control.

Several commissioners expressed reservations about unit mix (noting the project is predominantly two-bedroom units) or about the limits of local discretion given state housing laws, but the commission voted unanimously to approve the two resolutions on the staff agenda: (1) certify the final EIR, adopt the MMRP and make findings (including the statement of overriding considerations), and (2) approve design review, the requested density bonus, demolition permit and parcel merger for the proposed 50-unit rental development. The motion passed on a recorded roll call with all members voting aye, including the youth member.

Next steps and conditions

The project approval includes standard conditions described in the staff report and the MMRP. The entitlement approvals are exercisable for the statutory period provided in the city's code; the developer may seek building permits and must comply with the mitigation measures in the MMRP (including biological surveys, construction best-management practices, and historic‑resource mitigation measures specified in the EIR). Staff noted nesting-bird and other seasonal restrictions could affect timing of certain construction activities. The entitlements may be transferred or sold, but any substantive changes to the approved project would return to the commission for review.

Actions

The planning commission adopted two resolutions authorizing the environmental certification and discretionary entitlements for the Montalvo Apartments project. The record shows a motion to adopt both resolutions was made and seconded and the motion passed unanimously on roll call (all members present voted aye). The action includes certification of the final EIR, adoption of the mitigation monitoring and reporting program, adoption of the statement of overriding considerations for unavoidable historic-resource impacts, and approval of design review, density bonus (including one requested concession and one waiver), demolition permit and parcel merger to permit construction of the 50-unit rental community.

Ending

Materials referenced at the hearing include the final EIR, the staff report, mitigation monitoring and reporting program and design review exhibits; the record also includes consultant reports on structural condition, hazardous materials, and relocation cost estimates for the existing house. The applicant and staff indicated construction timing is contingent on final permit processing, mitigation timing (including bird-nesting season restrictions) and market conditions.