On the 30th day of April, 1897, the appellant made, executed and delivered to the respondent a bond, whereby he agreed to pay the sum of $8,000 on the 30th day of April, 1900. The bond contained *172the usual covenant in the penal sum of $16,000 for the recovery of principal, interest and costs, etc. Upon the same date he executed as collateral security for the payment of the bond a mortgage for the same amount, covering certain property on One Hundred and Thirty-third street in the city of Hew York. On or about the 10th day of September, 1897, the mortgagor conveyed the mortgaged premises to one Wrenkow, subject to said mortgagee, the grantee, however, not assuming payment of the same. The mortgage was not paid at maturity, and on the 8th day of May, 1900, within ten days after it became due, the mortgagor notified the mortgagee, in writing, that he had conveyed the mortgaged premises, as aforesaid, and directed that she immediately foreclose said mortgage, to the end that he might be relieved from further liability upon such bond and mortgage. The mortgagee failed and neglected to foreclose the mortgage, as requested, and did not take any action or proceeding to foreclose the same until December 1,1901. The defendant Jungmann appeared and answered in the action, setting forth therein the facts heretofore stated, and averred that after the said notice had been served upon the mortgagee he then stood in the relation of surety to the debt, and on account of the neglect of the mortgagee to comply with the notice to foreclose, he was released from liability for any deficiency which might arise upon a sale of the mortgaged premises; that the said mortgagee, after such notice to foreclose, had allowed the grantee of the defendant to collect the rents of the-premises, and also allowed taxes, assessment and water rates to accumulate against the said property, and also interest upon the mortgage.. After the action was at issue the parties entered into a stipulation whereby it was agreed that the plaintiff should proceed with the foreclosure action, procure a decree of sale therein ; that the premises should be sold as speedily as possible, and that all questions as-to personal liability of the defendant for any deficiency arising upon the sale should be determined after such sale had taken place, and when it was ascertained that a deficiency in fact existed. Under the decree a sale of the premises was had in the month of February, 1902, and a deficiency arose thereupon of $1,919.67. Upon a-hearing before the court, after the sale, it appeared that the grantee of the premises had allowed the taxes and water rates to accumulate during the years 1900 and 1901, amounting, at the time of: *173the closing of title under the decree of foreclosure, to the sum of $325, and that no interest had been paid on the bond and mortgage from the 13th day of April, 1901. It also appeared that such grantee had received rentals from the premises, $931 from May, 1900, to December, 1901, when the foreclosure action was begun. The court held that the mortgagor did not stand in the relation of .surety to the grantee of the premises; that he had no legal right to demand that the plaintiff foreclose the mortgage, or that she procure the appointment of a receiver of the rents, or otherwise protect the property, and that the request to foreclose did not relieve the defendant Jungmann from liability for any interest, taxes or other charges which had accumulated since the request was made, and thereupon directed judgment against him for the amount of the deficiency, with costs and disbursements. From the judgment so entered the defendant Jungmann appeals.
We think the court was wrong in holding that there was no relation of surety between the mortgagor and his grantee of the premises. It seems to be well settled that where a mortgagor sells and conveys premises subject to the mortgage debt, with no covenant on the part of the grantee to pay the same, there is not created by such transaction the technical relation of principal and surety ; but, as the land is the primary fund for the payment of the debt, in respect thereto and to the extent of its value the grantee of the premises stands in the relation of a principal debtor, and there is raised out of such situation an equity in favor of the mortgagor similar to that of a surety. (Murray v. Marshall, 94 N. Y. 611; Antisdel v. Williamson, 165 id. 372.) Where the mortgagee, after a transfer of the title of the premises covered by the mortgage, extends the time of payment of the mortgage debt, or refuses upon the request of the mortgagor to take proceedings to collect the mortgage debt, the mortgagor will be relieved from liability for any subsequent deficiency, if it appears that the whole debt could have been collected from the land, or that it was in value equal to the mortgage debt, and pro tanto to the extent to which the property had depreciated between the time when the request was made and when the mortgage was foreclosed. (Osborne v. Heyward, 40 App. Div. 78.) Under such circumstances, to the extent of the value of the land, the mortgagor is equitably entitled to the protection of a *174surety, and possesses all the rights inherent in such relation. (Spencer v. Spencer, 95 N. Y. 353.) Hothing which is contained in Marshall v. Davies (78 N. Y. 414) conflicts with or modifies this rule of law. . Therein it was held that a mortgagee out of possession holding a mortgage upon real estate, secured by the bond of a mortgagor, in the absence of any notice of any change in the situation, and of any request to foreclose, could legally rely upon the personal liability of the obligor in the bond. In that case the court found as a fact that there was no request to collect the money upon the bond and mortgage when it became due, nor was there any request that the mortgage should be foreclosed, and it was held, under such circumstances, that the mortgagor remained liable for the full amount of the mortgage debt, together with taxes and other incumbrances which had accrued thereon. The court expressly declined to decide what would have been the effect of a notice to foreclose after maturity, had one been given.
In view of the law, as expressed in the authorities we have cited, it is clear that the mortgagor would be entitled to a deduction from the deficiency judgment to the extent that there was depreciation in the value of the land after notice was given to foreclose the same, and that the equitable relation of surety for the mortgage debt arose. The court was, therefore, wrong in holding and deciding that such relation did not exist, and that no relief could be granted on account thereof. If the defendant has shown himself upon the present appeal to be aggrieved by such ruling, then it is clear that the judgment based thereon for the deficiency cannot be sustained, and will either be wiped out wholly or pro ta/nto.
This case, however, presents a somewhat different situation from any case which has been called to our attention, or which our research has enabled us to find. There is no proof in the present case showing that the land has depreciated in value from what it was at the time when the mortgage was given, or that after the request was made to foreclose the same after maturity there was any depreciation in its value; consequently nothing is made to appear, so far as the technical value of the land is concerned, which entitled the appellant to any relief whatever. What does appear, however, is that after the request was made to foreclose the mortgage, the mortgagee permitted the grantee of the premises to collect the rents *175thereof and appropriate them to his own use, and also permitted taxes, water rates and interest to accumulate in a considerable sum, and the claim of the appellant is that he is entitled to a deduction on account of these items, for the reason that the plaintiff was authorized to institute the foreclosure action and could have procured therein the appointment of a receiver and have impounded the rents, and applied them in discharge of the taxes, water rates and interest, and applied upon the mortgage debt any sum secured in excess of these charges. Concededly, the sale did not produce enough to pay the mortgage debt. This was some evidence, at least, to show that when the request to foreclose was made, the premises were of doubtful security to discharge the mortgage. The right to the appointment of a receiver would depend upon the fact that the mortgaged premises were insufficient as security to pay the debt. While the amount for which the property sold is not conclusive, it is some evidence, and the appellant will be at liberty to give proof upon this subject. If it be established, a case will have been made showing that a receiver might have been appointed, and the question presented is, was the mortgagee under an obligation to take this step for the protection of the mortgagor % It is clear that he would have been bound had the payment of the mortgage been assumed by the grantee of the premises. In Marshall v. Davies (supra) it was said: “We have held that where the mortgagor conveys to a third party, who assumes the mortgage, the relation of principal and surety arises between the mortgagor and his vendee; and that after notice of this relation the mortgagee is bound to observe it and abstain from doing any act to the prejudice of the mortgagor, or which would impair his recourse against the mortgaged premises in ease he should be obliged to pay his bond and be subrogated to the mortgage. The mortgagee in such a case, after notice, cannot with impunity release the land, or extend the time of payment, or do any other act to the prejudice of the mortgagor; and the prohibited acts are determined by the law of principal and surety. (Calvo v. Davies, 73 N. Y. 215.) ”
It is evident that if this be the duty and obligation of the mortgagor in a case where the grantee from a mortgagor has assumed the payment of the mortgage debt, in principle it must follow and be applied to the case of a mortgagor who has conveyed the prem*176ises to a grantee, subject to the mortgage, to the extent that the mortgagor stands in the equitable relation of surety. In other words, under such circumstances, the mortgagor is protected as a surety to the extent of the value of the land, and to that extent he is entitled to the same measure of protection that obtains - in the case of a suretyship, where a grantee has assumed the payment of the mortgage. As to the value of the land, the mortgagee may not do any act, or suffer it to be done, to the prejudice of the mortgagor, and, so far as such acts affect the value of the land, the mortgagor is entitled to protection. It would seem, therefore, where the land is only equal to the payment of the mortgage debt, or is in value insufficient for such purpose, and the mortgagee has been requested by the mortgagor to foreclose the mortgage and collect the debt, after the same has matured, that if the mortgagee disregards such notice and permits incumbrances to be created thereon, which are superior as liens to the lien of the mortgage, to that extent he permits an act to be done which reduces the value of the land for the discharge of the mortgage. It also seems to follow that if he omits to take legal proceedings to secure the full value of the land, he is guilty of an omission distinctly prejudicial to the right of the mortgagor. The mortgagee had the right in the present case to impound the rents and apply them to the payment of taxes, water rates and interest. Her failure so to do permitted the grantee of the premises to divert them to his own use, and thereby imposed an additional liability upon the mortgagor. The rents themselves were the product of the property, and the amount which it would produce was an inherent element of its value; and under the rule that the mortgagee, after notice, was bound to protect the rights of the mortgagor and make his burden as light as possible, he was called upon to take steps to secure what the property produced.
We conclude, therefore, that the defendant Jungmann was entitled to have such sums deducted from the deficiency judgment as were represented by the amount of the taxes, water rates and interest, which was permitted to accumulate after the notice to foreclose was given; and also to be allowed for rents which might have been impounded. In measuring this right, however, it is clear that the plaintiff is to be allowed only such sums as would have accrued, if, acting with reasonable diligence, she had foreclosed the mortgage *177when the request was made upon her so to do. These amounts can be arrived at upon a rehearing.
It follows, therefore, that the judgment for the deficiency should be reversed, and a new trial granted, with costs to the appellant to abide the event.
Laughlin, J., concurred; Yan Brunt, P. J., and Patterson, J., dissented.