Does a simple historic designation help the same way?
Answered by AskBaily Editorial · Updated
Short answer
No. A simple Historical Resources Board (HRB) designation provides preservation review and CEQA exemption pathways but does NOT reduce property tax by itself. The Mills Act contract is the tax-reduction instrument; designation is just the eligibility gate. Many SD homeowners get designated without signing a Mills Act contract and are surprised when no tax reduction follows. The contract is the financial instrument, not the plaque.
In detail
Historic designation and a Mills Act contract are routinely confused, and that confusion costs San Diego homeowners real money. Designation is the eligibility gate. The Mills Act contract is the financial instrument. The two are filed and approved separately, and getting one does not automatically get the other.
Designation runs through the City of San Diego Historical Resources Board (HRB) under San Diego Municipal Code Chapter 14, Article 3, Division 2. Staff and the HRB evaluate the property against six criteria: A (community history), B (community development), C (architecture or master architect), D (notable architect or builder), E (cultural landscape), and F (archaeology). A successful designation places the property on the City Register and triggers Mills Act eligibility, demolition delay protection under SDMC §143.0250, and a streamlined CEQA pathway under Public Resources Code Section 21084.1 and CEQA Guidelines Section 15331 for rehabilitation work that meets the Secretary of the Interior's Standards.
What designation does not do is reduce property tax. The County Assessor continues to assess the property at its Proposition 13 factored base year value. The owner pays full freight until they execute and record a separate Mills Act contract under California Government Code Sections 50280 to 50290. That contract is what unlocks the income-based capitalization assessment under Revenue and Taxation Code Section 439.2. Many owners pursue HRB designation for the prestige, the demolition protection, or the CEQA streamlining without ever signing a Mills Act contract, then are surprised the next October when the tax bill arrives unchanged.
The sequencing matters. The City accepts Mills Act applications once a year on a fixed window with a 50-contract annual cap; designation can be approved in any month. Owners targeting tax relief should plan for a two-step calendar: complete designation first, then queue the Mills Act application before the May 1 City deadline so that the contract takes effect for the following tax year.
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