Summarize the following court judgment. c. Petition No. 18280 of 1987 Etc. IN Writ Petition No. 6945 of 1982. 997 (Under Article 32 of the Constitution of India). K.L. Rathee	 section Balakrishnan and Harish N. Salve for the Petitioner. Ranjit Kumar	 Pramod Dayal and R.B. Datar for the Re spondents. The following Order of the Court was delivered: A three Judge Bench of this Court in the case of Dr. Balbir Singh & Ors. vs Municipal Corporation	 Delhi & Ors.	 elaborately examined the provisions of the Delhi Municipal Corporation Act of 1957 for the purpose of ascertaining the manner of determination of "rateable value" which was necessary for making assessment of property tax under that Act. This Court classified the properties into four categories. : (1) self occupied; (2) partly self occupied and partly tenanted; (3) restrictive lease hold on which construction is raised; and (4) where the property has been constructed in stages. So far as the fourth category is concerned (and these appli cations are concerned with that) this Court said: "The fourth category of premises we must deal with is the category where the premises are constructed in stages. The dis cussion in the preceding paragraph of this judgment provides an answer to the question as to how the rateable value of this category of premises is to be determined when the premises at the first stage of construction are to be assessed for rateable value	 the assessing authorities would first have to determine the standard rent of the premises under sub sec tion (2) (a) or 2(b) or (1)(A)(2)(b) or (1)(B)(2)(b) of Section 6 as may be applicable and keeping in mind the upper limit fixed by the standard rent and taking into account the various factors discussed above	 the assessing authorities would have to determine the rent which the owner of the premises 998 may reasonably expect to get if the premises are let out to a hypothetical tenant and such rent would represent the rateable value of the premises. " Having said so generally	 this Court proceeded to examine the different facets of the ques tion and stated: "When any addition is made to the premises at a subsequent stage	 three differ ent situations may arise. Firstly	 the addi tion may not be of a distinct and separate unit of occupation but may be merely by way of extension of the existing premises which are self occupied. In such a case the original premises together with the additional struc ture would have to be treated as a single unit for the purpose of assessment and its rateable value would have to be determined on the basis of the rent which the owner may reasonably expect to get	 if the premises as a whole are let out	 subject to the upper limit of the standard rent determinable under the provi sions of sub section (1)(A)(2)(b) of Section 6. Secondly	 the existing premises before the addition might be tenanted and the addition might be to the tenanted premises so that the additional structure also form part of the same tenancy. Where such is the case	 the standard rent would be liable to increase under Section 7 and such increased rent would be the standard rent of the premises as a whole and within the upper limit fixed by such standard rent	 the assessing authorities would have to determine the rent which the owner may reasonably expect to get if the premises as a whole are let out as a single unit to a hypo thetical tenant and in such a case	 the actual rent received would be a fair measure of the rent which the owner may reasonably expect to receive from such hypothetical tenant unless it is influenced by extra commercial consider ations. Lastly	 the addition may be of a distinct and separate unit of occupation and in such a case	 the rateable value of the premises would have to be determined on the basis of the formula laid down by us for assessing the rateable value of premises which are partly self occupied and partly tenanted. The same principles for determining of rate able value would obviously apply in case of subsequent additions to the existing premises. The basic point to be noted in all .these cases is and this is what we have already emphasised earlier that the formula set out in 999 sub section (1)(A)(2)(b) and (1)(B)(2)(b) of Section 6 cannot be applied for determining the standard rent of an addition	 as if that addition was the only structure standing on the land. The assessing authorities cannot determine the standard rent of the additional structure by taking the reasonable cost of construction of the additional structure and adding to it the market price of the land and applying the statutory percentage of 7 1/2 to the aggregate amount. " Initially an application was made by Common Cause	 petition er in original Writ Petition No. 6945 of 1982 for clarifica tion of the judgment confined to the last category of the fourth group referred to above. Later the Corporation itself made an application for the same purpose and impleaded the Government Servants Cooperative House Building Society as a party to that application. On October 1	 1985	 a little more than 10 months after the original judgment	 these cases were listed for directions. A two Judge Bench consisting of Bhagwati	 CJ and Pathak	 J.	 as the learned Chief Justice then was	 (both of them being parties to the three Judge Bench decision) gave the following direction: "The assessments made on the properties in volved in these cases are set aside if and only if any appeals were filed against such assessments or objections were raised to the draft or provisional assessments and in such cases	 fresh assessments are directed to be made in accordance with the law laid down by this Court	 save and except in those cases where the question in regard to the valuation of the land in relation to the subsequently constructed additional structures is involved	 which question we have yet to decide in CMP. 125 13/83 in Writ Petition No. 6945/82 and other connected matters fixed for hearing on 29.10.85. Where no appeals were preferred against the assessments and no objections were filed against draft or provisional assess ments	 the assessments will not be liable to be set aside and in such cases	 the writ petitions and appeals will	 to that extent	 stand dismissed. That is how these applications have now been placed for consideration. Long arguments have been advanced before us by Mr. Datar	 appearing for the Municipal Corporation; Common Cause and the 1000 Government Servants Cooperative House Building Society have resisted the application by advancing counter arguments through their respective counsel. Mr. Datar stated that clarification is confined to cases of subsequent construc tion raised upon existing construction and the manner of valuing the land for determination of the value of the property. This question was pointedly examined by the three Judge Bench and at page 475 of the Reports	 this Court held: " The market price of the land cannot be added twice over	 once while determining the standard rent of the original structure and again while determining the standard rent of the additional structure. Once the addition is made	 the formula set out in sub section (1)(A)(2)(b) and (1)(B)(2) (b) of section 6 can be applied only in relation to the prem ises as a whole and where the additional structure consists of a distinct and separate unit of occupation	 the standard rent would have to be apportioned in the manner indicated by us in the earlier part of this judgment. " This Court had	 therefore	 clearly indicated that when at a different stage	 additional construction was raised on the property already valued	 the market value of the land was not to be taken into account as it had already been consid ered while fixing the valuation of the pre existing con struction. The Corporation did not challenge the correctness of the decision but only wanted clarification. Since the matter has been directly decided and there is absolutely no ambiguity	 an application of this type on behalf of the Corporation does not lie. We were told by Mr. Salve	 learned counsel for Common Cause that their application had emanated when the Corporation wanted to act contrary to the judgment of this Court in regard to this category of constructions. Later on the Corporation wanted the cover of a clarificatory order of this Court for the procedure adopted by it for reflecting the market value of the land more than once in situations appertaining to the category. On our finding that this Court has categorically decided that the market value of land is not to be added over again	 there is no ambiguity which requires clarification. We decline to make any clarificatory order as there is no necessity. All the Civil Misc. Petitions are accordingly dismissed. P.S.S. Petitions dismissed.

In Dr. Balbir Singh & Ors. vs Municipal Corporation Delhi & Ors.	 this Court while laying down principles for determination of rateable value for making assessment of property tax of premises constructed in stages in Delhi	 emphasised that "the formula set out in sub sections (1)(A)(2)(b) and (1)(B)(2)(b) of section 6 of the Delhi Municipal Corporation Act	 1957 cannot be applied for determining the standard rent of an addition	 as if that addition was the only structure standing on the land. The assessing authori ties cannot determine the standard rent of additional struc ture by taking the reasonable cost of construction of the additional structure and adding to it the market price of the land and applying the statutory percentage of to the aggregate amount. " The petitioner society and the Municipal Corporation in their applications to this Court sought clarification of the above observations. Dismissing the applications	 HELD: The matter has been categorically decided and there is absolutely no ambiguity which requires clarifica tion. When at a different stage	 additional construction is raised on the property already valued	 the market value of the land is not to be taken into account as It has already been considered while fixing the valuation of the preexist ing construction. [1000D E	 G]