Severance of Joint Tenancies (1954) 38 Minn.L.Rev. 466, 474.) Such a view is generally based upon what is thought to be the English common law rule. (See Napier v. Williams [1911] 1 Ch. 361; Cowper v. Fletcher (1865) 6 B. & S. 464, 472; Doe ex dem. Marsack v. Read (1810) 12 East 57; Gould v. Kemp (1834) 39 Eng.Rep. 959, 962; Clerk v. Clerk (1694) 23 Eng. Rep. 809; Littleton’s Tenures, § 289; Swartzbaugh v. Sampson (1936) supra, 11 Cal.App.2d 451, 454; Annot. (1959) 64 A.L.R.2d 918, 932; cf. Palmer v. Rich [1897] 1 Ch. 134, 142-143; but see 27 Halsbury’s Laws of England (2d ed. 1937) § 1144, p. 662, fn. (7); Co. Litt. *185a.)
Others adopt a position that there is a temporary severance during the term of the lease. If the lessor dies while the lease is in force, under this view the existence of the lease at the moment when the right of survivorship would otherwise take effect operates as a severance,' extinguishing the joint tenancy. If, however, the term of the lease expires before the lessor, it is reasoned that the joint tenancy is undisturbed because the joint tenants resume their original relation. (See, e.g., 2 Reeves on Real Property (1909) § 680, p. 965; Comment (1937) 25 Cal.L.Rev. 203, 208-209; cf. 1 Platt on Leases (1847) pp. 130-131.) The single conclusion that can be drawn from centuries of academic speculation on the question is that its resolution is unclear.
As we shall explain, it is our opinion that a lease is not so inherently inconsistent with joint tenancy as to create a severance, either temporary or permanent. (See Hammond v. McArthur (1947) supra, 30 Cal.2d 512, 516 (dictum); Swartzbaugh v. Sampson (1936) supra, 11 Cal.App.2d 451, 454; 15 Cal.Jur.3d, Cotenancy and Joint Ownership, § 16, p. 736; 20 Am.Jur.2d, Cotenancy and Joint Ownership, § 17, p. 111; 1 Ogden’s Revised Cal. Real Property Law (1974) § 7.20; 1 Platt on Leases (1847) pp. 130-131; 27 Halsbury’s Laws of England (2d ed. 1937) § 1144, p. 662, fn. (7); Co. Litt. *185a.)
Under Civil Code sections 683 and 686 a joint tenancy must be expressly declared in the creating instrument, or a tenancy in common results. This is a statutory departure from the common law preference in favor of joint tenancy. (Abbey v. Lord (1959) 168 Cal.App.2d 499, 503 [336 P.2d 226]; Reiss v. Reiss (1941) 45 Cal.App.2d 740, 747 [114 P.2d 718]; Swartzbaugh v. Sampson (1936) supra, 11 Cal.App.2d 451, 454; see Frisbie v. Marques (1870) 39 Cal. 451, 453-454.)5 Inasmuch as the estate
5
Because the feudal system was opposed to a division of tenures, estates in joint tenancy were favored at common law. Like the laws of primogeniture, joint tenancy was founded “on the principle of the aggregation of landed estates in the hands of a few, and *158opposed to their division among many persons.” (Siberell v. Siberell (1932) 214 Cal. 767, 771 [7 P.2d 1003], quoting DeWitt v. San Francisco (1852) 2 Cal. 289, 297.) Despite the obsolescence of its original purpose, the estate of joint tenancy remains a popular form of property ownership in California (see Griffith, Community Property in Joint Tenancy Form (1961) 14 Stan.L.Rev. 87, 88-89) on the ground that it avoids the delay and administrative expenses of probate.