delivered the opinion of the Court:
The bill in this case was filed for the purpose, as we gather from its allegations and prayer for relief, of quieting a claim of title alleged to have been acquired by adverse possession, in a slight strip of ground upon which a wall rested, dividing and supporting in part two houses fronting on Seventh street, west, and located on lot 10, square 423, in the city of Washington. The bill was framed, manifestly, to bring the case within the principle laid down by the Supreme Court of the United States in the case of Sharon v. Tucker, 144 U. S. 533 — a case taken up from the Supreme Court of this District. But that case, clearly, has little or no application to the present case.
It appears, both from the bill and the answer, that, in 1845, John McCutcheon was owner of the north 33 feet 4 inches of lot 10, in square 423. Being the owner of such part of the lot, in 1851, he erected upon such part of lot 10 two adjoining brick houses, the front walls of which were located SSjV feet back from the front line of the lot on Seventh street. This is shown by a plat filed with the bill. In 1856, McCutcheon conveyed the south half of this property *11that is to say, 16 feet 8 inches front, by metes and bounds, to a party named Baylis, through and under whom by mesne conveyances, the plaintiffs claim. And in 1857, Mc-Cutcheon conveyed the north half of the 33 feet 4 inches of lot 10, being the remaining 16 feet 8 inches front, by metes and bounds, to a party named Utermehle. By subsequent mesne conveyances, this north half part of the 33 feet 4 inches of lot 10, so held by McCutcheon, has been conveyed to the present defendant. The two parts thus separately and differently conveyed by the owner McCutcheon, each had a house thereon at the time of the conveyance by Mc-Cutcheon, divided from each other, but mutually supported by a thin division wall of only four inches thick.
Some years after, the owner of the south half or part of the ground, extended the front wall of his house to the front line of the lot, prolonging the division line between the two houses, as shown by the line 1-2 on the plat. And about ten years later the owner of the north half or part of the ground likewise extended his house to the front line of the lot, and in so doing he used the wall already extended by the owner of the south half of the ground so separately conveyed. The house as originally built, and subsequently extended, on the 16 feet 8 inches south portion of the ground conveyed by McCutcheon, and nowin the possession of the plaintiffs, was torn down by the plaintiffs, with the purpose of erecting a new building instead thereof, prior to the time of filing the bill in this case. There is no necessity shown for the tearing down and reconstruction of the building on the south side of the wall, except to enable the plaintiffs to enlarge and extend their building. The defendant insists that whatever right of easement the plaintiffs may have had in the wall as means of support to their house "while standing, they no longer have any right therein, and that the wall never, was a party wall, and cannot be used as such.
The plaintiffs in their bill set out their title, according to *12their claim and pretensions, and the facts as they claim them to exist; and they allege as the result of the preceding allegations of their bill, “that notwithstanding the apparent legal title to the strip of ground in controversy is outstanding in the defendant, the plaintiffs are by reason of the long continued adverse possession of themselves and their grantors or predecessors in interest, as in their bill referred to, and by reason of the further fact, now alleged by plaintiffs, that the possession therein referred to was taken and held, and the improvements made by the plaintiffs’ predecessors in interest with the full knowledge of and without objection by defendant or her predecessors in interest, and assented to by them, the actual, legal and beneficial owners, as against all persons whomsoever of the land hereinbefore specifically described; but that, inasmuch as the facts respecting their adverse possession and estoppel of defendant do not appear of record, the apparent legal title, as shown by the record, is outstanding in the defendant, and that such apparent title, while thus outstanding, constitutes a cloud upon plaintiffs’ own actual title, and that its effect is to seriously embarrass them in selling or otherwise disposing thereof, as they are desirous to do, and plaintiffs aver that they are without remedy,” etc. And they pray that, as against the defendant, their title to the part of lot 10, square 423, as claimed and possessed by them, may be quieted, and that they may, as against the defendant, be decreed to be the sole, legal and beneficial owner thereof. It is thus made clear that the object of the bill is to quiet alleged title acquired by adverse possession, and to have such title judicially declared, notwithstanding the apparent legal record title to the strip of ground claimed by the plaintiffs is conceded to be in the defendant.
Upon the pleadings and proof, the court below adjudged and decreed as to the rights of the respective parties, plaintiffs and defendant, in the ground upon which the wrall rests, and the wall itself as a division wall; and as to that part of *13the wall extended 33TV feet to the front line of the lot on Seventh street, and designated on the plat as the part 1-2, the court declared and established the same “to be a party wall, subject to the rights and easements therein of the said complainants and defendants as the same do now exist.” From this part of the decree there has been no appeal, and therefore we are not called upon to review it. But the court below proceeded by a distinct clause to adjudge and decree “that as to that part of the said lot ten (10), in square four hundred and twenty-three (423), lying north of the centre of the said party'wall, and the other part of the said lot lying north and west of a line drawn due west to the rear line of the said lot from a point situate thirty-three and one-tenth (33iV) feet west from the line of Seventh street and one hundred and sixteen (116) feet eight (8) inches south from the north line of said square, the relief prayed for in the said bill of complaint, be, and the same is hereby, denied, and the bill of complaint in regard thereto be, and the same is hereby, dismissed, each party paying their own costs.”
It is from this clause or part of the decree that the plaintiffs have appealed.
The plaintiffs insist that there is error in this part of the decree—
1. In not granting the entire relief prayed by the bill
2. In not adjudging the plaintiffs to be the owners in fee of the land covered by their building, and in dismissing the bill of complaint as to a part of such land.
3. In not declaring the walls 2-3 and 3-4 to be party walls, and in not decreeing that the land south of the middle line thereof prolonged to the rear of said lot belongs to the plaintiffs in fee simple.
These alleged errors may be treated together, as embraced under one and the same general consideration.
It is very clear there is no question on the facts of this case, as to rights acquired by mere adverse possession, the one party against the other. The rights of the parties *14depend upon other principles. And this was manifestly the view of the court below in-passing the decree.
A party wall, as it is generally defined and understood, is a wall erected and standing on the line between- two estates or tenements owned by different persons for the use in common of both estates or tenements; and the common use of a wall separating adjoining lots of land belonging to different owners is prima facie evidence that the wall and the land upon which it stands belong to the adjoining owners in equal undivided moieties as tenants in common. One of the owners of such wall may take it down, if -it be done with the intention of rebuilding it, but it must be with that intention, and such intention must be executed without unnecessary delay, and with as little injury to the adjoining dependent premises as possible. Cubitt v. Porter, 8 Barn. & Cr. 257; Standard Bank v. Stokes, 9 Chan. Div. 68; Phillips v. Bordman, 4 Allen, 147. In this case the original division wall erected at the time of the building of the two houses by McCutcheon, the owner of both, was clearly not a party wall. It had but few of the constituents of a party wall. Whether the parties claiming under McCutcheon the different parcels of ground and the houses thereon, could have made this dividing wall, as between the two houses, a party wall by agreement, or by long acquiescence in a particular mode of common user thereof could have made it such, are questions not presented by the bill or the proof in this case.
But there are cases that maintain a principle very nearly akin to that which applies in the case of a party wall, and that principle would seem to be applicable in this case. That principle arises in cases where an owner builds several houses in a block and afterwards sells them to different persons, as was done in this case. If the houses be so constructed as to be mutually subservient to, and dependent on each other, neither of them being capable of standing or supporting itself, or being enjoyed without the support it derives from the other, the sale and conveyance of one house *15by the owner of both, will not estop him from claiming in respect of the house he retains that support from the house sold which is at the same time afforded in return by the former to the latter tenement. This is the principle of the familiar case of Richards v. Rose, 9 Exch. 218. In that case it'was held, that where several houses belonging to the same owner are built , together, so that each requires the mutual support of the neighboring house, and the owner parts with one of the houses, the right to such mutual support is not thereby lost; the legal presumption being, that the owner reserves to himself such right, and, at the same time, grants to the new owner an equal right; and consequently, if the owner parts with several of the houses at different times, the possessors will still enjoy the right to mutual support, the right being wholly independent of the question of the priority of their titles.
In that case, Parke, B., said: “Both these parties derived their titles from the same source. The legal title from which the leases proceeded was vested in the original lessor. It must have been intended by him that each of the tenants of these houses should enjoy his house with all the rights to which it was entitled in its then state and condition; and one of these rights is, that each house should have the support of its neighbor’s.” And the Chief Baron, in delivering the opinion of the court, said: “We are all of opinion that, where houses have been erected in common by the same owner upon a plat of ground, and therefore necessarily requiring mutual support, there is, either by a presumed grant, or by a presumed reservation, a right to such mutual support, so that the owner who sells one of the houses, as against himself grants such right, and on his own part also reserves the right; and consequently the same mutual dependence of one house upon its neighbor’s still remains.”
The principle of that case has been adopted in many subsequent cases, and has been incorporated by writers on *16real estate law in their text as an established principle. 2 Washb. Real Prop. 333, 334. But in such case, the right to mutual easement or lateral support exists only so long as the wall continues to be sufficient for the purpose of mutual support, and the respective buildings remain in a condition to require the support. If one of the buildings thus supported becomes so dilapidated as to be unsafe and unfit for occupation, the owner may, upon giving reasonable notice to the owner of the adjoining building, take it down, notwithstanding the act of taking down may occasion the destruction of the whole wall, on condition, however, of rebuilding it without delay and without unnecessary injury to the adjoining premises. Sherred v. Cisco, 4 Sandf. 480; Partridge v. Gilbert, 15 N. Y. 601. But if the buildings be torn down, or be destro3red by fire, or otherwise, and be not at once restored, the right of mutual support will cease, and the parties may then assert their unqualified title to the division line. Sherred v. Cisco, supra; Hearth v. Kruger, 56 Sup. Ct. (N. Y.) 390. The implied or presumed grant, or reservation as the case may be, of mutual support of an intervening wall of the buildings as originally erected and sold, is not, therefore, to be construed into a perpetual easement as of a common or party wall, so that after the buildings are torn down or destined, the strip of ground upon which the wall was originally erected should be. subject to an easement for the support of the wall for other or different buildings, requiring greater and more extensive support.
Upon the case stated in the bill and the proof produced, we are of opinion that the plaintiffs obtained all the relief to which they were entitled; and that there is nothing in that part of the decree from which this appeal is taken that in any respect requires the reversal thereof, or that requires any material modification of such part of the decree. We shall therefore, affirm the part of the decree appealed from; and it is so ordered.
Part of decree appealed from affirmed, and cause remanded.