This аppeal tests the constitutionality of section 107.1 of the Revenue and Taxation Code, which prescribes methods for evaluating the possessory interests of lessees of tax-exempt property.
L. W. Blinn Lbr. Co.
v.
County of Los Angeles,
“A possessory interest, when arising out of a lease of exempt property, consists of the lessee’s interest under such lease and is hereby declared to be personal property within the meaning of Section 14 of Article XIII of the Constitution of the State of California.
‘ ‘ The full cash value of such possessory interest is the excess, *454 if any, of the value of the lease on the open market, as determined by the formula contained in the case of De Luz Homes, Inc. v. County of San Diego (1955),45 Cal.2d 546 [290 P.2d 544 ], over the present worth of the rentals under said lease for the unexpired term thereof.
“A possessory interest taxable under the provisions of this section shall be assessed to the lessee on the same basis or percentage of valuation employed as to other tangible property on the same roll.
“This section applies only to possessory interests created prior to the date on which the decision of the California Supreme Court in De Luz Homes, Inc. v. County of San Diego (1955),45 Cal.2d 546 [290 P.2d 544 ], became final. It does not, however, apply to any of such interests created prior to that date that thereafter have bеen, or may hereafter be, extended or renewed, irrespective of whether the renewal or extension is provided for in the instrument creating the interest.
“This section does not apply to leasehold estates for the production of gas, petroleum and other hydrocarbon substances from beneath the surface of the earth, and other rights relating to such substances which constitute incorporeal hereditaments or profits a prendre. ’ ’
Plaintiffs are lessees of certain lands and improvements owned by the city of Los Angeles and located within its boundaries. Their leases were made prior to the date on which our decision in the De Luz ease became final and were not extended or renewed thereafter. Nonetheless thе assessor of Los Angeles County assessed their leasehold interests without deducting the present worth of rentals for the unexpired terms, on the ground that section 107.1 is void because inconsistent with section 1 of article XIII and section 12 of article XI of the California Constitution.
Plaintiffs appeared before the Los Angeles County Board of Equalization and apрlied for reduction of their assessments by such amounts as would result from the deduction of rentals pursuant to section 107.1. Upon denial of their application they paid under protest the taxes levied for 1958 and instituted the present suit to recover the disputed amounts. The trial court found that section 107.1 is unconstitutional and entered judgment for the defendants.
Section 1 of article XIII of the California Constitution provides: “All property in the State except as otherwise in this Constitution provided . . . shall be taxed in proportion *455 to its value, to be ascertained as provided by law. ...” Section 12 of article XI provides: “All property subject to taxation shall be assessed for taxation at its full cash value.” Plaintiffs contend that the foregoing provisions are not applicable to leasehold interests in tax-exempt property. They rely on the first paragraph of section 107.1, which declares that such interests are “personal property” within the meaning of section 14 of article XIII. Section 14 provides:
“The Legislature shall have the power to provide for the assessment, levy and collection of taxes upon all forms of tangible personal property, all notes, debentures, shares of capital stock, bonds, solvent credits, deeds of trust, mortgages, and any legal or equitable interest therein, not exempt from taxation under the provisions of this Constitution, in such manner, and at such rates, as may be provided by lаw, and in pursuance of the exercise of such power the Legislature, two-thirds of all of the members elected to each of the two houses voting in favor thereof, may classify any and all kinds of personal property for the purposes of assessment and taxation in a manner and at a rate or rates in proportion to value different from any other property in this State subject to taxation and may exempt entirely from taxation any or all forms, types or classes of personal property.”
Plaintiffs contend that section 107.1 simply exercises the Legislature’s power to classify “personal property” for the purposes of assessment and taxation in a manner and at a rаte or rates different from other taxable property.
Leasehold interests in tax-exempt land, however, are not “personal property” within the meaning of section 14 of article XIII. The relevant paragraph of section 14 was added to the California Constitution in 1933. At that time section 3617 of the Political Code provided: “The term ‘personal property’ includes everything which is the subject of ownership not included within the meaning of the term ‘real estate’ or ‘improvements.’ ” The same section provided: “The term ‘real estate’ includes: 1. The possession of, claim to, ownership of, or right to the possession of land....” Possessory interests in land had been legislatively defined as “real estate” or “real property” for purposes of taxation since 1872 and are still so defined today. (Rev. & Tax. Code, §§ 104, 106.) This court prior to 1933 had specifically recognized that possessory interests in tax-exempt land are real property for purposes of taxation.
(San Pedro etc. R.R. Co.
v.
City of Los Angeles,
The interpretation given to the term “personal property” as used in section 9a of article XIII supports the conclusion that possessory interests in land are real property for purposes of taxation. That section originally read: “The taxes levied uрon personal property for any current tax year where the same is not secured by real estate shall be based....” In
1936
the section was amended to read: “The taxes levied for any current tax year upon personal property
and assessments upon possession of, claim to, or right to the possession of land and upon taxable improvements located on land exempt from taxation,
which are not a lien upon land sufficient in value to secure their payment, shall be based. ...” (Italics added.) The insertion of the new phrases indicates a change in the law
(Hyatt
v.
Allen,
Textual analysis of section 14 suggests the same result. The Legislature is authorized to classify personal property “in pursuance of the exercise of” its power to provide for the assessment, levy, and collection of taxes upon all forms of tangible personal property, certain specified types of intangibles, and any legal or equitable interest therein. It cannot be assumed that the provision authorizing classification was
*457
intended to be broader in scope than the power that it was designed to implement.
(Roehm
v.
County of Orange,
Moreover, we have held that intangibles other than those specified in the first clause of section 14 are immune from taxation.
(Roehm
v.
County of
Orange,
For the foregoing reasons we hold that leasehold interests in tax-exempt land are not “personal property” within the meaning of section 14 of article XIII and that the first paragraph of section 107.1 of the Revenue and Taxation Code is invalid. The elimination of that paragraph, however, in no way disturbs the scheme of taxation set forth in the remaining paragraphs of section 107.1. Even though not a classification of “personal property,” the remaining paragraphs must be sustained if they can be reconciled with the provisions of section 1 of article XIII and section 12 of article XI on some other grounds. (See
People
v.
McCaughan,
Plaintiffs contend that the remaining paragraphs of section 107.1 do not violate the constitutional requirements that all property be assessed and taxed “at its full cash value” and “in proportion to its value,” but merely prescribe a method of determining the “full cash value” and “value” of a unique type of property. This method of determining value was held improper in the De Luz сase, but plaintiffs maintain that that case was based upon a construction of “full cash value” as used in the applicable statutes rather than in the Constitution. We do not, however, reach the question of whether De Luz declared a statutory or a constitutional rule.
*458
Under section 107.1 substantial differences in the valuation of possessory interests in tax-exempt property turn solely on whether or not the interest was created, extended, or renewed after the De Luz decision. In making this distinction the Legislature rested squarely, though mistakenly, on its power to classify “personal property.” There is no suggestion of a legislative finding that the distinction reflects actual differences in the value of the interests involved, and no such finding could reasonably be made. The section therefore cannot be sustained as a legislative interpretation of “full cash value” and “value.” (See
Eisley
v.
Mohan,
Section 107.1 partially reinstates the rule of the Blinn case as the method for assessing and taxing interests created in reliance on that rule, while preserving the rule of the De Luz case for аll other interests. The sole purpose of the section is to mitigate the economic burdens imposed on lessees of tax-exempt property when this court overruled the Blinn case. The basic issues presented, therefore, are whether the Legislature has the power to depart from assessment and taxation at full cash value and in proportion to value by prescribing temporary application of a principle once approved by this court, in order to mitigate hardships caused by our subsequent rejection of that principle, and, if so, whether section 107.1 is a proper exercise of the power.
In recent years much attention has been given to the problеm of mitigating the hardships caused by an overruling of established law. (See e.g., Freeman,
Retroactive Operation of an Overruling Decision, 18
Columb.L.Rev. 230; Kocourek & Koven,
Stare Decisis,
29 Ill.L.Rev. 971; von Moschzisker,
Stare Decisis in Courts of Last Resort,
37 Harv.L.Rev. 409; Snyder,
Retrospective Operation of Overruling Decisions,
35 Ill.L.Rev. 121; Spruill,
The Effect of an Overruling Decision,
18 N.C.L. Rev. 199; 13 Mont.L.Rev. 74.) Under traditional theory an overruled decision is considered not to have established bad law, but to have merely misstated the law. The overruling decision is deemed to state what the law was from the beginning, and is therefore generally given retroactive effect.
(County of Los Angeles
v.
Faus,
We have hitherto recognized that the California Constitutiоn permits an appellate court to apply an overruling decision prospectively only, even though it thereby temporarily preserves and applies a mistaken interpretation of the Constitution.
(County of Los Angeles
v.
Faus,
Section 107.1 is not an unreasonable exercise of the Legislature’s power to mitigate hardships caused by the overruling of established law. Rentals in leases of tax-exempt property created before the De Luz case were fixed at a level competitive Avith rentals of private property on the assumption
*460
that the rental value of the possessory interest would not be taxed. The De Luz case imposed an unexpеcted tax burden on the lessees that their governmental lessors refused to mitigate by reducing rentals, on the ground that such reductions would constitute unconstitutional gifts of public
funds.
(See Cal. Const., art. IV, §31;
Texas Co.
v.
County of Los Angeles,
Nothing in
Texas Co.
v.
County of Los Angeles,
We hold, therefore, that the last four paragraphs of section 107.1 are valid and that plaintiffs are entitled to recover the excess of the taxes pаid under protest over the amounts that would have been levied if the assessor had complied with section 107.1.
' The judgment is reversed and, pursuant to stipulation by counsel, the trial court is directed to remand the case to the Los Angeles County Board of Equalization for hearing upon the matter of assessing plaintiffs’ possessory interests according to the terms of section 107.1 of the Revenue and Taxation Code.
Gibson, C. J., Schauer, J., McComb, J., Peters, J., White, J., and Dooling, J., concurred.
