OPINION OF THE COURT
Smith, J.Petitioners challenge the validity of two orders of the New York City Rent Guidelines Board (RGB) that make a distinction between low-rent apartments in which there has been no recent vacancy and other apartments, allowing larger rent increases, in percentage terms, for apartments in the former category. We hold that the RGB has the power to make this distinction.
I
The RGB orders in issue here govern rent levels for the years ended September 30, 2009 and September 30, 2010. The two orders are identical in all relevant ways except for the amounts of the increases allowed. The parties focus on the first of the two, as will we.
The part of that order that concerns us sets out the rent increases permitted in renewal leases of apartments. It makes separate provision for apartments in which heat is provided by the landlord at no charge to the tenant, and those in which it is not; and it also distinguishes between one-year and two-year renewal leases. In each category, the order authorizes a percentage rent increase: for apartments where heat is provided, 4.5% for a one-year lease and 8.5% for a two-year lease; where heat is not provided, 4% for a one-year lease and 8% for a two-year lease.
However, “where the most recent vacancy lease was executed six years or more prior to the date of the renewal lease under this Order,” the order makes the percentage increases subject to a dollar floor, calculated to affect apartments in which the old rent was less than $1,000 a month. For example, where heat is provided, the authorized increase in a one-year renewal lease is 4.5% or $45, whichever is greater; for a two-year lease it is 8.5% or $85, whichever is greater; and so forth. Thus, if the old rent on an apartment that had had no vacancy for six years or more was, say, $450, a landlord who provided heat and offered a one-year renewal lease could charge an additional $45—a 10% increase.
*334The RGB’s purpose in taking this approach was to remedy what it saw as an inequity. Ordinarily, the permissible rent for a rent-stabilized apartment depends on the rent charged in the past, with relatively modest increases authorized annually by the RGB, and larger increases (or, at higher rent levels, decontrol) when the apartment becomes vacant. But the costs of maintaining an apartment and providing services to its occupant are often not in proportion to historical rents. Where the rent is relatively small and there is no vacancy for many years, the disproportion can become acute, with small annually-authorized increases that do not come close to covering increased costs. Those costs have to be paid somehow, so if percentage increases are uniform, the increases must be set at a level that allows landlords to make larger profits on the apartments that get larger increases, and to use those profits to pay the costs for the lower-rent apartments. In other words, tenants paying higher rents must subsidize those paying lower rents.
Perhaps that subsidy could be justified on the ground that tenants paying higher rents are generally wealthier. An analysis by the RGB staff, however, showed that the subsidy appears to be unfair even when tenant income is taken into account. The analysis (which excluded senior citizens receiving rent increase exemptions) showed that the median rent-to-income ratio for tenants living in their apartments six years or more was lower than the same ratio for all tenants—and would continue to be lower even if minimum increases in the range of those at issue here were imposed. The RGB therefore decided to adopt the minimums.
This case began as two CPLR article 78 proceedings, one relating to each of the RGB’s orders; the proceedings have been consolidated. Petitioners are two rent-stabilized tenants, both of whom have lived in their apartments for more than six years and pay less than $1,000 a month in rent, and a tenants’ rights organization. They seek to annul the orders to the extent they allow minimum dollar increases. Petitioners make no claim that the minimum increases are unreasonable or unfair, but assert that the RGB lacks the power to permit them.
Supreme Court granted the relief petitioners sought (27 Misc 3d 340 [2010]), and the Appellate Division affirmed (Matter of Casado v Markus, 74 AD3d 632 [1st Dept 2010]). We granted leave to appeal (15 NY3d 712 [2010]), and now reverse.
*335II
Petitioners’ primary argument is that the RGB has no power to create classes of housing accommodations—meaning, petitioners say, that the RGB is forbidden to draw any distinctions within any of the three “classes” of housing accommodations— apartments, hotel units and lofts—established by the New York City Council. Petitioners base this argument on two provisions of law: New York City Administrative Code § 26-510 (b), which is part of the Rent Stabilization Law (RSL), originally enacted in 1969 by the New York City Council (Local Law No. 16 [1969] of City of NY, codified as amended at Administrative Code § 26-501 et seq.); and section 3 (a) of the Emergency Tenant Protection Act (ETPA), enacted by the State Legislature in 1974 (L 1974, ch 576, § 4, codified as amended at McKinney’s Uncons Laws of NY § 8621 et seq.). At the same time it enacted the ETPA, the Legislature repealed and reenacted the parts of the RSL relating to the RGB, making no relevant change in the language of section 26-510 (b) (L 1974, ch 576, § 9).
In its current form, section 26-510 (b) authorizes the RGB to “establish annually guidelines for rent adjustments,” and to file with the City Clerk annually “a statement of the maximum rate or rates of rent adjustment, if any, for one or more classes of accommodations” (Administrative Code § 26-510 [b]). ETPA § 3 (a) (Uncons Laws § 8623 [a]) says that in New York City “[t]he existence of [a] public emergency requiring the regulation of residential rents for all or any class or classes of housing accommodations . . . shall be a matter for local determination . . . by the local legislative body.” (The power given the New York City Council by this section of the ETPA was largely revoked by the State Legislature in 2003 [see L 2003, ch 82, § 1, codified at Uncons Laws § 8605].) Petitioners claim that these enactments, read together, reserve the power to create “classes of housing accommodations” to the City Council exclusively, and that the City Council has not delegated and could not delegate to the RGB any power to draw distinctions between accommodations of the same class. Petitioners’ argument does not persuade us.
On its face, the RSL does not prohibit the RGB from distinguishing some kinds of apartments from others. The language that empowers the RGB to establish “the maximum rate or rates of rent adjustment . . . for one or more classes of accommodations” (Administrative Code § 26-510 [b]) does not, as a simple matter of grammar, say or imply that there must be *336only one “maximum rate ... of rent adjustment” for each class. And the ETPA language that petitioners rely on (which has been in any event largely nullified by later legislation) has nothing to do with the issue before us. To say that a “local legislative body” may determine when a “public emergency” exists requiring rent regulation for “all or any class or classes of housing accommodations” (Uncons Laws § 8623 [a]) is to say nothing at all about whether, or by whom, multiple levels of rent increases may be permitted within each class.
In fact, the RGB has always made some distinctions between apartments, even though apartments are generally considered one “class” of housing accommodation. Most obviously, the RGB prescribes different rental rates for one-year and two-year leases. Petitioners say that this is an exception to the general rule against the making of distinctions within a “class,” and assert that the exception is authorized by Administrative Code § 26-511 (c) (4) (reenacted by the State Legislature, L 1985, ch 907, § 1). That code provision, however, says nothing about the RGB’s power to make distinctions: it says that landlords shall be required “to grant a one or two year . . . lease at the option of the tenant.” It is true that this requirement would make little sense if rent increases for one- and two-year leases had to be the same, because almost all tenants would elect two-year leases; but this reinforces our point—the Legislature must have assumed that the RGB would make common-sense distinctions when it fixed the increases allowed for apartments.
The RGB has made a number of other distinctions within the apartment “class.” It has allowed landlords to charge extra when electricity is included in the rent, and to collect “fuel adjustment surcharges” (see Stein v Rent Guidelines Bd. for City of N.Y., 127 AD2d 189, 190, 196 [1st Dept 1987]; Matter of Chessin v New York City Conciliation & Appeals Bd., 100 AD2d 297, 304 [1st Dept 1984]). Indeed, the order challenged in this case distinguishes between apartments in which heat is provided by the landlord and those in which it is not. Petitioners say that all these distinctions are invalid, and have survived only because the power to create them has never been challenged; they assert that they could, but chose not to, attack the heat-based distinction contained in the order now at issue. To us, however, the fact that such distinctions have long been accepted without question is further confirmation that nothing in the governing legislation can fairly be read to prohibit them.
We therefore reject petitioners’ argument that the RGB may not permit any increases that are larger, in percentage terms, *337for some apartments than for others. But petitioners also attack the dollar minimum increases now at issue on a narrower ground. They point out that the problem addressed by these mínimums—the plight of landlords who are unable for a long time to obtain vacancy increases—has been dealt with to some degree by state legislation. New York City Administrative Code § 26-511 (c) (5-a), adopted by the Legislature in 1997 (L 1997, ch 116, § 19), governs the rent increases permitted after an apartment becomes vacant. In general, the permissible vacancy increase is 20%, but where there has been no previous such increase within eight years “the legal regulated rent may be further increased” according to a formula stated in the legislation. Petitioners argue, in substance, that by giving landlords this form of relief, the Legislature implicitly prohibited the RGB from giving another form of relief for the same evil.
Again, petitioners’ argument does not persuade us. There is no conflict between the RGB’s dollar minimum increases, which give some benefit to landlords of low-rent, slow-turnover apartments while their tenants remain in possession, and the state legislation, which gives relief regardless of rent level after a slow-turnover apartment has finally become vacant. It is true that some landlords may, eventually, benefit from both provisions, but the two benefits, even where cumulative, are not logically inconsistent. Nor is the state legislation so detailed and comprehensive as to imply that the Legislature has preempted the field.
Petitioners rely on Matter of New York State Tenants & Neighbors Coalition, Inc. v Nassau County Rent Guidelines Bd. (53 AD3d 550 [2d Dept 2008]), which invalidated an order of the Nassau County Rent Guidelines Board permitting rent increases that would vary with tenants’ income. The New York State Tenants Court held that “the Board exceeded its statutory authority in establishing a separate class of accommodation based on tenant income” (id. at 552). To the extent that the Second Department in New York State Tenants—like the First Department here—accepted the argument that there can be no distinction in the rent increases allowed within a “class of accommodation” it was mistaken, for the reasons we have explained.
This does not mean that the result in New York State Tenants was necessarily wrong. It could be argued that, in making distinctions based on tenant income, the Nassau County Rent Guidelines Board trespassed on a sensitive policy area that is *338within the Legislature’s special province (see Boreali v Axelrod, 71 NY2d 1 [1987]). We do not pass on the merit of that argument as it applies to the New York State Tenants case. But we find the argument inapplicable here, where the RGB has dealt with a narrower, more technical and less sensitive issue.
Accordingly, the order of the Appellate Division should be reversed, with costs, and the petitions dismissed.