TO: ARCHITECTURAL AND PRESERVATION COMMISSION
FROM: BRAD JOHNSON, COMMUNITY DEVELOPMENT DIRECTOR
DATE: NOVEMBER 13, 2025
SUBJECT:
Title
REVIEW OF HISTORICAL PROPERTY (MILLS ACT) AGREEMENT REQUEST #25-MA04 BETWEEN THE CITY AND THE OWNER OF THE PROPERTY LOCATED AT 1111 NORTH INDIAN HILL BOULEVARD. APPLICANT AND PROPERTY OWNER(S): DAVID RYAN AND JACQUELINE MUHR
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SUMMARY
The owners of the property at 1111 North Indian Hill Boulevard have submitted a request to enter into a Historic Property (Mills Act) Agreement with the City. The Mills Act is a preservation tool enacted by the State legislature to ensure the long-term preservation of eligible historic properties and other significant site features of such properties. In return, property owners receive a reduction in taxes, which in turn helps finance needed repairs and renovations for the property. The Architectural and Preservation Commission is the recommending body for Mills Act requests. The Architectural and Preservation Commission recommendation is then forwarded to the City Council for final action on the agreement. Staff has reviewed the application and finds that each of the required criteria for entering into a Mills Act agreement, as established by the City Council, can be met.
RECOMMENDATION
Recommended Action
Staff recommends the Architectural and Preservation Commission:
A. Adopt a RESOLUTION OF THE ARCHITECTURAL AND PRESERVATION COMMISSION OF THE CITY OF CLAREMONT, CALIFORNIA, RECOMMENDING CITY COUNCIL APPROVAL OF HISTORICAL PROPERTY (MILLS ACT) AGREEMENT #25-MA04 BETWEEN THE CITY AND THE OWNER OF THE PROPERTY LOCATED AT 1111 NORTH INDIAN HILL BOULEVARD - APPLICANT AND PROPERTY OWNER(S): DAVID RYAN AND JACQUELINE MUHR; and
B. Find this item is exempt from environmental review under the California Environmental Quality Act (CEQA).
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ALTERNATIVES TO RECOMMENDATION
In addition to staff’s recommendation, the following alternatives have been identified:
A. Continue the discussion and request additional information.
B. Express the intent to recommend denial of the Mills Act contract, specifically identifying the criteria that cannot be met, and continue the item to December 10, 2025, for adoption of the denial recommendation resolution.
FINANCIAL REVIEW
The costs associated with the review of this application have been borne by the applicant.
ANALYSIS
Upon approval of a Mills Act historical property contract (Attachment A), the value of the subject property is reassessed based on a formula that considers the rental income that could be expected from the property, the Federal home loan interest rate, a historic property risk component, and an amortization component to result in a special Mills Act capitalization rate. The total tax savings for the property owners is determined by using the formula outlined in Attachment C, which also estimates the anticipated tax savings for the property owners/applicants. With approval of a Mills Act contract, the value of property tax savings must be put towards the scope of work, identified in Attachment A, to preserve or rehabilitate the historic character defining elements of the property and ensure its ongoing historical and structural integrity. Approval of a Mills Act contract will also result in a minor loss of tax revenue to the City. This loss represents the City’s contribution to ensuring the property’s preservation for the benefit of the community.
Staff has prepared estimates of the anticipated tax savings (Attachment C) for the owner and the loss in tax revenue to the City if the Mills Act agreement is approved. The calculations estimate a potential tax savings to the owners of $10,520 per year ($105,199.67 for ten years), and a potential loss to the City in tax revenue of $1,220 per year. In addition to the loss of revenue to the City, the contract will also result in a loss of tax revenue to the other local, regional, state agencies, and districts that receive a portion of property taxes paid.
Background
What is the Mills Act?
The Mills Act is a preservation tool created by the California state legislature in 1972 to encourage the preservation and restoration of historic properties. The Act enables cities to enter into historical property agreements with owners of qualifying properties to reduce owners’ property taxes in order to incentivize investment in their historic properties. While resulting in some lost tax revenue, the agreements provide benefits to cities in that they ensure preservation, high-quality rehabilitation, and maintenance of historic properties that represent important cultural resources.
As provided for by State law, the Mills Act is administered and implemented by local governments. Mills Act contracts are executed between the property owner and the local government granting the tax reduction. Cities have considerable discretion in evaluating Mills Act requests and are not mandated to approve historical property agreements. Each local government establishes its own eligibility criteria, application procedures, and the number of contracts to allow within its jurisdiction. The California Office of Historic Preservation (OHP) does not participate in the contract negotiations, is not a signatory to the contract, and has no authority over the administration of the Mills Act program.
City’s Mills Act Program
In October 2000, the City Council approved procedures and review criteria for agreements for properties in Claremont. Initially, the program was restricted to historic properties suffering severe deterioration and in danger of near-term demolition or eventual demolition due to long term neglect. In January 2009, the City Council revised the review criteria to include all residential properties listed in the City’s Register of Structures of Historic and Architectural Merit of the City of Claremont (Register). In addition, the Council limited the maximum number of Mills Act contracts that can be approved to six per year.
On October 9, 2012, the City Council amended the program once more to provide clarification to one of the review criteria, and to establish an annual compliance review fee. These newly revised criteria and procedures are included as Attachment D (City Council Resolution 2012-75).
Property Description
The subject property is known as the “Ilsley House” on the Claremont Register of Historic Resources, and it has been previously featured in Claremont Heritage’s Home Tours. It is located on the west side of North Indian Hill Boulevard, on the block situated between Eleventh Street and Twelfth Street. It is the original office and residence of Dr. Morrill Ilsley and Mrs. Mary Ilsley, who were both prominent Claremont residents in the postwar era. The property has a General Plan Designation of Residential 6 and is zoned Residential Single-Family - 8,000 square foot lot size (RS 8,000).
Located at 1111 North Indian Hill Boulevard and constructed in 1932, the residence is a well-preserved example of Monterey Spanish Revival architecture found in Claremont, which was a popular style built from 1915 to 1940.
The character defining features of both the exterior and interior of the home were identified through a site visit to the property. The primary residence is a two-story, Monterey Spanish Revival structure with a rectilinear exterior form and floor plan. Its exterior walls are composed of white textured stucco and two-piece clay tile roofing. Character defining features of the exterior include a dominant second-story balcony with wooden railing that cantilevers and expands across the width of the house facing North Indian Hill Boulevard, double-hung wood windows with shutters, decorative wooden doors, smooth plaster walls in white, low-pitched gable roofs, and a mature heritage oak tree in the rear yard.
The interior of the home features white plaster walls, wood flooring, exposed wood-beam ceilings in living room with original corbels on both ends, arched doorways, arched coat closet, phone nook in the wall, wooden staircase with original walnut wood railing, original built-in wood shelves and drawers in the wall, original ducts with decorative metal vents throughout the house, as well as an open, flowing interior layout with large windows facing the rear patio and heritage oak tree, swimming pool, and two-story guesthouse.
In addition, since the original owner of this house was Dr. Ilsley, who was a prominent figure in Claremont who practiced medicine in his house for decades, various unique features, including a washing basin in a small room by what was then his bedroom, as well as service call buttons, are still intact and will be preserved by the current owners.
The home is in good shape and, with appropriate restoration and repair, can continue conveying its historical appearance and significance.
Proposed Work Plan
The applicant and property owner has proposed a sensible work plan that addresses both the home’s exterior and interior and will rehabilitate some of the home’s character defining features while also enhancing the structural integrity of the property and bringing portions of the home closer to their original historic appearance. A detailed summary of the proposed improvements is included in the Draft Mills Act Contract (Attachment A), with a summary provided here. With approval of a Mills Act Contract, the applicant would complete the hydro-jet cleaning of the existing sewer line and install epoxy liner for a section of the sewer line, perform window repairs and restoration to historic character, replace the roof with tiles and salvage existing roof tiles as possible, install double-hung windows and stucco bullnose corners for the kitchen, create an arch in a square doorway to match with all character defining arched doorways throughout the house, remove and replace wood floors, repair structural damage on the stairway and correct the height of the railing to be code compliant, install replica windows for the covered sun porch, and repair interior doors. The estimated cost of the proposed work items is more than double the estimated property tax savings over ten years.
Qualifying Criteria and Staff Evaluation
Pursuant to Section 130 of City Council Resolution No. 2012-75, a historical property may be approved only if all the following criteria (in italics) are met. Each criteria is followed by staff’s rationale on why it is being met.
A. The subject property meets the eligibility requirements for a Mills Act contract pursuant to California Government Code Section 50280.1 in that it is a privately owned property which is not exempt from property taxation, and is listed on the National Register of Historic Places, located in a National Register or local historic district, or listed in a state or county official register of historic or architecturally significant sites, places or landmarks, or listed in the Register of Structures of Historic and Architectural Merit of the City of Claremont.
The subject property is privately owned by the applicants (David Ryan and Jacqueline Muhr) and is not exempt from property taxation. The property is listed on the Claremont Register of Historic Resources as a fine example of Monterey Spanish Revival architecture. It embodies distinctive characteristics of Spanish craftsmanship and retains a high degree of historical integrity. Furthermore, this house was the office and residence of Dr. Morrill Ilsley and Mrs. Mary Ilsley. Mrs. Ilsley was the first chair of the City’s Parkways and Trees Committee, as well as the City’s Planning Committee of 100, which made remarkable contributions to Claremont’s city planning in the postwar era. Mrs. Ilsley was instrumental in the City’s planting and watering of uniform street trees, in addition to tree planting requirements in subdivision maps. Her leadership not only led to the attractive tree-lined streets that Claremont is known for but also helped to shape the City’s unique “Trees and PhDs” culture. Dr. Morrill Ilsley, who helped to organize health care for Scripps College, also contributed to the City’s trees by donating funds to purchase street trees when residents were incorporative in the planting of uniform street trees, as well as the purchase of eucalyptus trees that were planted along Foothill Boulevard. The property’s architectural and historical significance satisfies the Mills Act eligibility requirements.
B. The subject property contributes significantly to the quality, diversity, historical interest, and ambience of the community.
The Ilsley House contributes significantly to the quality, diversity, and historical ambience of Claremont. Constructed in 1932, the residence represents a great example of Monterey Spanish Revival architecture, especially given its location on North Indian Hill Boulevard within the Old Claremont neighborhood. The style and era of the home blend well with the mix of traditional and revival styles of architecture that line this street, which is one of the most important and prominent in the City. The quality and fidelity to the Monterey Revival architectural style are also important for the Old Claremont and Historic Claremont neighborhoods that surround the property.
C. Significant features that define the historical character of the subject property, and its buildings have not been destroyed or can be restored based on documentary, physical, or pictorial evidence.
The significant character defining features of the subject property have largely been preserved, though some repairs and restoration are needed to extend the life of the home. The more significant proposed work, such as the hydro-jet cleaning of the sewer line, repair and restoration of the stairs and handrail, roof replacement, and wood floor replacement will increase the livability of the residence and significantly reduce potential future damage to the residence. Furthermore, proposed work such as window restoration, installation of replica windows for the covered sun porch, removal of the fixed pane kitchen window for period-appropriate double hung windows, door refinish and replacement will further preserve the functionality and architecturally contributing features that define the property. The home exhibits a high level of integrity in design, materials, workmanship, and setting - ensuring that its historic character has not been lost and, where necessary, can be restored using documentary and physical evidence such as that found in Attachment G.
D. The owner of the subject property proposes to make improvements that are related to preservation and/or rehabilitation of character defining elements and/or historical and structural integrity of the property. Additionally, the cost of such improvements must be equal to or greater than the expected property tax savings for the first ten years, which needs to be distributed in two five-year periods.
All improvements proposed by the applicant are related to either the preservation and/or rehabilitation of character defining elements, or the structural integrity of the property, and improved livability of the home, and the estimated cost of these improvements exceeds the expected property tax savings. The details of the planned improvements are listed in Attachment F.
In completing the proposed work items with the benefit of a historical property contract, the property’s ability to continue contributing to the historical interest and ambience of the Claremont community will be enhanced. The applicant has proposed a sensible work plan that would help ensure the home’s long-term livability and restore some of its key historic features.
Based on estimates provided by the applicant, the total cost of the proposed scope of work is approximately $288,587, 274% over the estimated savings of $105,199.67 that would result from the historical property contract over a 10-year period. With the signing of the historical property contract, the applicant would be required to invest the avoided property tax into the work outlined in Attachment F. Additionally, based on the proposed scope of work, the applicant would be contributing more of their own funds into the proposed work than they would be saving through their reduced property taxes.
E. The subject property is residential.
The subject property is a single-family residential property located in the RS 8,000 zoning district. The property remains in residential use, consistent with the Mills Act’s residential eligibility criteria.
CEQA REVIEW
The proposed scheduled improvements within the contract are categorically exempt from the California Environmental Quality Act (CEQA) pursuant to Section 15331 in that these improvements are for the restoration and rehabilitation of a historical resource, will be conducted in a manner consistent with the Secretary of the Interior’s Standards of the Office of Historic Preservation of the Department of Parks and Recreation, United States Secretary of the Interior’s Guidelines for Rehabilitation of Historic Properties, and the State Historical Building Code and will be subject to applicable City permitting requirements. Therefore, no further environmental review is necessary.
PUBLIC NOTICE PROCESS
The agenda and staff report for this item have been posted on the City website and distributed to interested parties. If you desire a paper copy, please contact Melissa Sanabria at msanabria@claremontca.gov.
Notice of this project was published in the Claremont Courier on October 31, 2025. Copies of this staff report have been sent to the applicant and other interested parties.
Submitted by: Reviewed by:
Brad Johnson Christopher Veirs
Community Development Director City Planner
Prepared by:
Catherine Lin, AICP
Senior Planner
Attachments:
A - Draft Mills Act Contract
B - Draft APC Resolution
C - Estimated Tax Savings Calculation
D - Adopted Procedures for Review and Approval of Historic Property Contracts
E - Photo Survey of the Subject Property
F - Improvement Plan
G - Historic Registry
H - Historic Photo
I - Claremont Home Tour
J - Mary Ilsley Interview
K - Pictorial History of Claremont Reference