Prop 60 & 90

Transfer your Tax Basis

Transfer your Tax basis to your new home!!! You may be able to do just that if you meet the required parameters outlined below. This may very well make the new home more affordable than you may have thought.

Proposition 60 Transfer of Property Tax Base for Senior Citizens

On November 4, 1986, the voters of California passed Proposition 60 to provide to qualified homeowners the transfer of the base-year value of their principal residence to a replacement dwelling located in the same county, under certain circumstances. The requirements for this exclusion are:

1. At the date of transfer of the original property, the transferor (seller) must be at least 55 years of age. (If married, only one spouse must be at least 55, but must reside in the residence; if co-owners, only one co-owner must be at least 55 and must reside in the residence.)

2. The replacement property must be purchased or newly constructed on or after November 5, 1986. The replacement residence must be purchased or newly constructed within two years before or after the sale of the original residence.

3. The sale of the original residence must qualify for reassessment as the result of its transfer.

4. The principal claimant must have been (1) receiving, or eligible for, a Homeowner’s Exemption or (2) have been receiving a Disabled Veteran’s Exemption on the original and replacement residences.

5. The replacement residence must be “equal to or lesser” in market value than the original residence. In general, “equal or lesser” than market value of a replacement dwelling has been defined as: 100% of market value of original property as of its date of sale if a replacement dwelling is purchased before an original property is sold; 105% of market value of original property as of its date of sale if a replacement dwelling is purchased within one year after the sale of an original property; 110% of market value of original property as of its date of sale if a replacement dwelling is purchased within two years after the sale of an original property.

6. The claimant and/or claimant’s spouse can only be granted relief under this section once.

The disclosure of social security numbers by all applicants is required. They are used by the assessor to verify the eligibility of persons claiming this exemption and by the State to prevent multiple claims in different counties. This claim is not open to public inspection.

If you feel you meet the qualifications for this exclusion, you must provide evidence and/or declare under penalty of perjury that you are at least 55 years old, and complete the claim form. The claim for relief must be filed within three years of the date a replacement dwelling is purchased or new construction of the replacement dwelling is completed. To obtain a claim form, call the Assessor’s Office at (925) 313 7400, or write to: Gus S. Kramer, Assessor County of Contra Costa 2530 Arnold Drive Martinez, CA 94553

Q. Is it true that only one claimant, out of several co-owners of a replacement dwelling, must be at least age 55 as of the date of sale of an original property in order to qualify?    A. Yes. Only one claimant/occupant (or his/her spouse who was also an occupant) who was a qualified record owner of the original property must be at least 55 years of age.

Q. Can a taxpayer apply for and receive the benefit of Proposition 60 numerous times during the course of his/her lifetime?         A. No. Only claimants who have not previously been granted this property benefit are eligible.

Q. When making the “equal or lesser value” test comparison, is a simple comparison of the sales price of the original property and the purchase price/cost of new construction of the replacement dwelling all that is needed?    A. No. The comparison must be made using the full market value of the original property as compared to the full market value of the replacement dwelling as of its date of purchase/completion of new construction. This is important because the sales/purchase price is not always the same as market value. The assessor must determine the market value for each property, which may differ from the sale price.

Q. If the current full cash value of my replacement dwelling slightly exceeds the “equal or lesser value” test as compared to the full market value of my original property, can I receive partial benefit?    A. No. Unless the replacement dwelling satisfies the “equal or lesser value” test, no benefit is available.

Q. Can two otherwise qualified taxpayers who have recently sold their separately owned original properties combine their claim for Proposition 60 benefit when they buy a single replacement dwelling together?    A. No. They can only receive benefits if one or the other, not both, qualifies by comparing his/her original property to the jointly purchased replacement dwelling.

Q. May I give my original property to my son/daughter and still receive the Proposition 60 benefit when I purchase a replacement property?    A. No. The law provides that an original property must be sold for consideration and subject to reappraisal at full market value at the time of sale. Original property transferred to a child or disposed of by gift or devise does not qualify.

Q. Isn’t the assessor precluded under Proposition 60 from issuing supplemental assessments when the factored base-year value is transferred from an original property to a replacement dwelling?    A. No. When the replacement dwelling is purchased or newly constructed, the assessor is mandated by law to issue supplemental assessments (positive or negative) for all transactions that result in a base-year value change, including those that qualify under Proposition 60.This is accomplished by comparing the factored base-year value of the original property to the factored base-year value of the replacement dwelling property.

Q. After receiving the notice that my application has been granted, do I still need to pay both installments of the secured tax bill at the higher value?    A. Yes. Any reduction in value will be refunded in the form of a negative supplemental. Please be aware that the refund may not arrive before the second installment of the secured tax bill is due. No adjustments are made to the secured tax bill to reflect the Proposition 60 exclusion.

Q. If a qualified claimant first sells his/her original property and then transfers its existing factored base-year value of $60,000 to a subsequently acquired replacement dwelling that has an existing taxable value on the roll of $40,000, should a supplemental assessment be levied for $20,000 as of the date of purchase of the replacement property?    A. Yes, assuming the current market value of the replacement dwelling exceeds the new base year value which resulted from a change of ownership of the replacement dwelling. Although the new base-year value was transferred from the original property, it results in a supplemental assessment for the difference between the new base-year value and the current roll value, or $20,000.

Q. Is it true that a replacement dwelling may be acquired any time within two years (before or after) of the date of sale of the original property?    A. Yes, provided the replacement dwelling is acquired on or after November 6, 1986.

Q. If a lot is purchased and a home constructed, must the new construction be completed within two years of the purchase of the lot?    A. No. The replacement lot may be purchased anytime before the sale of the original property; however, the new construction of the residence must be completed within two years of the sale of the original property.

Q. May I, as a former co-owner of an original property, receive partial benefit on my replacement dwelling along with the other co-owners on their separate replacement dwellings?    A. No. The law provides that only one co-owner of an original property which is/was qualified for the homeowner’s exemption may receive the benefit in a situation like this where all co-owners must determine, between themselves, which ones should receive the benefit. Only in the case of a multiple-residential original property where several co owners qualify for separate homeowner’s exemptions may portions of the factored base-year value of that property be transferred to several qualified replacement dwellings.

Q. Can an original property mobile home qualify for Proposition 60 when a replacement property is acquired?    A. Yes, but only if the mobile home is enrolled as real property. If it is not, then the mobile home is not eligible since there is no real property base-year value to be transferred.

Q. Can I transfer my original property tax base from a property located outside of Contra Costa County?    A. No. Transfers between counties (Proposition 90) are allowed only if the county in which the replacement dwelling is located has passed an authorizing ordinance. Effective November 8, 1993, Proposition 90 was repealed in Contra Costa County.

Proposition 90 – Allowing Seniors over 55 to transfer their real estate tax basis to their new home even when they move to a different county.

Updated as of 05/26/16

Ordinarily under Proposition 13, the value of a home for property tax purposes is re-assessed to market level whenever achange in ownership takes place. This usually results in higher property taxes for the homebuyer.

In November 1988, the state‘s voters approved Proposition 90, which is designed to induce greater turnover of homes owned by senior citizens. The measure provides anyone over the age of 55 with relief from Proposition 13 by allowing them to move from one county to another without undergoing a change in their basic property taxes.

Proposition 90 is a “local-option” law; each county has the option of participating. If a county has adopted a Proposition 90 ordinance, it accepts transfers of property tax base assessments from other California counties. If the county that the homeowner is moving from does not have a Proposition 90 ordinance, this does not affect the eligibility of the homeowner.

[Please note: Proposition 60 is a similar law passed by the state‘s voters two years prior to Proposition 90. It allows seniors to keep their property tax base assessment when they move within the same county.]


Table I below lists the counties that have adopted a Proposition 90 ordinance. Table II lists the counties that have rejected Proposition 90.


Counties which have adopted a Proposition 90 ordinance:
Alameda Santa Clara
El Dorado San Diego
Los Angeles San Mateo
Orange Ventura
Riverside San Bernardino


Counties which have rejected implementing Proposition 90:
[Counties with an asterisk * previously had a Proposition 90 ordinance, then repealed it.]
Butte Modoc* Santa Barbara
 Calaveras  Mono  Shasta
 Contra Costa  Monterey*  Siskiyou
 Fresno  Napa  Solano
 Inyo*  Nevada  Sonoma
 Kern*  Placer  Stanislaus
 Lake  Sacramento  Trinity
 Madera San Benito  Tulare
 Marin  San Luis Obispo  Yolo
Mendocino Merced

If you’re thinking of making a move, give me a call and we can talk about more details that need to be considered when purchasing a new home.

Jim Hitcher
Better Homes & Gardens – Reliance Partners Real Estate
(925) 785-8364
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