Notwithstanding the defendant landlord’s misconduct in responding to a rent strike protesting deteriorating conditions by an unlawful threat to curtail fundamental services to residential tenants, I am inclined to agree with the court that on the record developed at the time of the motion to renew, there was a persuasive argument for permitting the defendant to recover current rents. The defendant alleged without effective contradiction that, following the original injunction, it made a conscientious effort to ascertain, and to respond appropriately to, the needs of the tenants. It does not seem fair that the landlord should be denied the right to recover the agreed rents when it is providing the required services.
The problem arises from the fact, candidly acknowledged by the defendant, that it would not have been entitled under the principles set forth in Lipkis v Pikus (99 Misc 2d 518, affd on opn of Appellate Term 72 AD2d 697) and Mandel v Pitkowsky (102 Misc 2d 478, affd for reasons stated at Appellate Term 76 AD2d 807) either to evict the tenants because of the unlawfulness of the residential tenancies, or for failure to pay rent, or to recover the rents that were being withheld. The landlord has no certificate of occupancy for a residential building nor, as to what is de facto a multiple dwelling (Multiple Dwelling Law, § 4, subd 7), has the landlord filed the notice required by section 325 of the Multiple Dwelling Law and subdivision b of section D26-41.21 of the Administrative Code of the City of New York, a failure rendered jurisdictionally defective by 22 NYCRR 2900.21 (f).
It was the legal barriers presented by the principles set forth in Lipkis and Mandel (supra) that led the landlord to threaten the curtailment of essential services which gave rise to the tenants’ action for injunctive relief.
In short, the decision of this court extends to the landlord a right to recover rent which it would not have had in a proceeding under RPAPL 711 and does so in response to a *182situation created by the landlord’s unlawful threat to deny to the tenants essential services. The principle embodied in the decision of the court, in effect holding out an inducement to landlords to violate the law, is unacceptable. If, as applied to the facts presented here, the principles set forth in Lipkis and Mandel (supra) are sound, it is clearly wrong for this court to condition the plaintiffs’ right to injunctive relief upon the payment of rent. If these principles should be revised to permit the recovery of rent by this landlord, and others in similar circumstances, the court is required to address that issue directly.
If landlords in the position of this defendant are to be permitted under appropriate circumstances to recover agreed rents without threatening tenants with curtailment of essential services, it is necessary to modify that aspect of the Lipkis and Mandel rule that denies such landlords the right actually to receive rents in RPAPL 711 proceedings until they secure a certificate of occupancy. Conceptually this kind of revision would not represent a radical departure from the principle already established in these cases that found inapplicable in this area, under specified circumstances, the statutory prohibition in sections 301 and 302 of the Multiple Dwelling Law against the recovery of rent from residential tenants for periods of time in which there was lacking an appropriate certificate of occupancy.
The more important and difficult question is whether such a change would represent a reasonable and sound response to the complicated social and economic problems presented. As to that, the information presented in this record is not very helpful. In the present state of judicial knowledge, and subject to the enlightenment that may be provided by future cases, I am inclined to favor a more flexible approach that would vest trial courts with the discretionary power, depending on the balance of factors presented in individual cases, to pursue varying approaches. In some cases the circumstances may make it clearly appropriate to defer the actual receipt of rent payments until a certificate of occupancy is secured. In others it may be preferable to permit landlords to recover rent payments on a showing that a good faith effort has *183been undertaken to conform the buildings to the requirements of the Multiple Dwelling Law and to secure an appropriate certificate of occupancy. In still others, the particular complex of factors may make it appropriate for the courts to permit landlords to receive rent payments without undertaking the expense of conforming their buildings to the requirements of the Multiple Dwelling Law.
The possibility cannot be excluded that there may be situations in which it is on balance undesirable to require the conversion of loft buildings to multiple dwellings, and in which it is also undesirable to require the termination of existing residential tenancies. As to such buildings, it is surely not a viable, long-term solution to require landlords to provide a full range of essential and costly services to residential tenants while denying them the right to receive rents.
A separate legal impediment to the kind of change suggested here is presented by subdivision (f) of rule 2900.21 of the Rules of the New York City Civil Court (22 NYCRR 2900.21 [f]) which provides in pertinent part that in every summary proceeding to recover possession of real property pursuant to RPAPL 711 the petitioner must allege either “(1) that the premises are not a multiple dwelling, or, (2), that the premises are a multiple dwelling and pursuant to the Administrative Code, article 41, there is a currently effective registration statement on file”.
As the caption to the rule indicates, the above allegations were deemed to be. required under section 325 of the Multiple Dwelling Law and subdivision b of section D2641.21 of the Administrative Code of the City of New York. The Administrative Code. section provides in pertinent part that an owner who fails to file such a statement of registration, “shall be denied the right to recover possession of the premises for non-payment of rent during the period of non-compliance, and shall, in the discretion of the court, suffer a stay of proceedings to recover rents, during such period.”
In Mandel v Pitkowsky (102 Misc 2d 478, supra) the Appellate Term, citing subdivision 7 of section 4 of the Multiple Dwelling Law, held that a building occupied by at *184least three loft tenants living independently of each other is a de facto multiple dwelling and that accordingly the petition was jurisdictionally defective since it did not allege filing of the registration statement in accordance with 22 NYCRR 2900.21 (f), and no proof of such filing was offered at the trial. Consistent with the approach already taken in this area as to sections 301 and 302 of the Multiple Dwelling Law in Lipkis and Mandel (supra), and the extension of that approach suggested here, the Mandel rule should be revised to hold that the requirements of the Civil Court rule, and of the Administrative Code section which it undertook to implement, are inapplicable to the situation presented by the lease of commercial property for residential purposes to tenants who are, or reasonably should have been, aware of the illegality of the arrangement.
We are confronted here with a perplexing set of problems in which a social development has resulted in unlawful arrangements of a kind not contemplated by, nor adequately responded to, by existing statutes, administrative regulations, or rules of law. If there are presently apparent general principles that would yield on a consistent basis wholly satisfactory responses to these problems, I am not aware of them.
Whatever else may be doubtful, it is surely clear that the existing body of law should not be evaded by a holding that in effect provides an inducement to landlords unlawfully to curtail, or threaten the curtailment of, essential services to residential tenants. So long as the decision of this court leaves wholly intact the principles set forth in Lipkis and Mandel (supra), I cannot agree with that part of the determination that conditions the tenants’ clear right to injunctive relief on the payment of current and ongoing rents.
Murphy, P. J., Markewich and Fein, JJ., concur with Silverman, J.; Sandler, J., dissents in part in an opinion.
Order, Supreme Court, New York County, entered on July 28,1981, modified, on the law and the facts, and in the exercise of discretion, to the extent that the direction to the “plaintiffs” to pay their rent and additional rent both current and in arrears stricken;- plaintiff’s motion for preliminary injunction to enjoin defendants-respondents from *185discontinuing or interfering with plaintiff’s electrical services during the pendency of the action granted; the preliminary injunctions granted hereby and in the order appealed from and in the order of March 6, 1981 is conditioned upon the filing of an undertaking in the amount of $5,000, as required by the order of March 6, 1981, and on the further condition that the named plaintiff and the other tenants (“plaintiffs”) pay all current rent and additional rent as the same becomes due at the rate prevailing prior to the institution of these actions, and that within 15 days of the date of the order to be settled herein, with notice of entry, plaintiffs pay to defendants all arrears of such rent and additional rent accruing since June 11,1981, the date of Special Term’s decision directing the payment of rent, without prejudice to the right of defendants to bring any appropriate action or proceeding, or to interpose any counterclaim, to recover arrears of rent for any earlier period; and the order is otherwise affirmed, without costs and without disbursements.