PETERS, J.

The principal issue in this appeal is the lienability of a contractor's work in road building and site preparation under the mechanic's lien act before its 1974 amendment. The plaintiff, Pasquale Camputaro, also known as Pat Camputaro, doing business as Roma Construction Company, sued to recover for services rendered and materials furnished pursuant to an agreement with the corporate defendant, the Stuart Hardwood Corporation (formerly the Stuart Paley Co., Inc.). One count of the complaint sought damages under a bond given in substitution for a mechanic's lien by the corporate defendant as principal, and by the individual defendants, Stuart H. Paley and Jerome L. Paley, as sureties. Three other counts sought damages from the corporate defendant alone for breach of contract, implied contract and quasi-contract. The defendants responded with a variety of defenses, as well as claims by way of setoff and counterclaim alleging defective performance by the plaintiff. The referee to whom the case was referred, Thim, J., rendered judgment for the plaintiff on the first two counts of his complaint and on the defendants' set-off and counterclaim. The defendants' appeal contests all aspects of the judgment except the ruling on the setoff and counterclaim.

The underlying facts, which are no longer at issue, establish the following: Camputaro and Hardwood agreed that Camputaro would do work on two related projects on an unimproved tract of land in Bethany. This land is owned by the individual defendants, the Paleys. Stuart Paley is the president and the majority stockholder of Hardwood. Hardwood had previously agreed with the Paleys that it would improve the land by building upon it a prefabricated sheet metal building for use in Hardwood's business.

The first project consisted of the completion of a roadway leading to the projected building site on the land. This contract was negotiated on February 17, 1974, and completed on March 1, 1974. A few days later, Camputaro billed Hardwood for $8910 and was paid in full. A second invoice, claiming an additional amount of $8511.85 for gravel furnished in connection with the road work, was disputed and has not been paid.

The second project involved preparation of the site for the proposed building. On March 1, 1974, Camputaro agreed to clear, grade and fill the land at and around the building site so as to create level ground, a smooth site, on which the building might be placed. Although his work included excavation, he was not hired to excavate for footings or for a foundation for the building. Between March and June 19, 1974, Camputaro excavated about four and one-half acres of land for which he claimed entitlement to $130,098.50 for equipment rental, materials, supervision and insurance. Camputaro ceased working on the project in June when a disagreement arose about payment terms. At that time, Hardwood had already paid Camputaro $20,000 under the site preparation agreement; the remaining amount was in dispute and was not paid.

After Camputaro ceased working on the project on June 19, 1974, Hardwood engaged in extensive preparation for an expanded site layout for its plant. A prefabricated building was acquired by the defendants and delivered to their property. There was, however, no evidence of any attempt to raise, erect or construct the building on the prepared site after it had been cleared. For reasons that the record does not clearly disclose, the defendants chose not to erect the building.

The plaintiff, Camputaro, on June 25, 1974, filed a mechanic's lien in the sum of $118,566.36 for work done and materials furnished "in the construction of a certain building owned by said Stuart H. Paley and Jerome Paley." The lien was refiled, on July 15, 1975, in conformity with the validation provisions of General Statutes 49-35d enacted in response to this court's decision in Roundhouse Construction Corporation v. Telesco Masons Supplies Co., 168 Conn. 371, 385, 362 A.2d 778, vacated, 423 U.S. 809, 96 S.Ct. 20, 46 L.Ed.2d 29 (1975), on remand, 170 Conn. 155, 365 A.2d 393, cert. denied, 429 U.S. 889, 97 S.Ct. 246, 50 L.Ed.2d 172 (1976). Notice of intention to claim the mechanic's lien was properly served upon the defendants. On March 10, 1977, the defendants substituted their bond in the appropriate amount so as to secure release of the plaintiff's mechanic's lien pursuant to General Statutes 49-37.

The defendants raise three issues on this appeal. (1) With respect to the first count, the action on the bond against all of the defendants, does the work done by the plaintiff qualify as lienable under the mechanic's lien statute as it existed in 1974, before the amendments that went into effect on October 1 of that year? (2) With respect to the first count and the second count, the contract action against the corporate defendant, were items attributed to supervision, to a grader, and to insurance allowable under the contract? (3) With respect to both counts, were the damages awarded by the trial court impermissibly in excess of the amount demanded in the plaintiff's prayer for relief?

I

The defendants claim that the work done by the plaintiff, Camputaro, does not entitle him to recover on the bond given in lieu of the mechanic's lien. Obviously, the plaintiff's rights on the bond can rise no higher than those acquired under the underlying mechanic's lien for which the bond is merely a substitute. General Statutes 49-37; Biller v. Harris, 147 Conn. 351, 353, 161 A.2d 187 (1960); Hartlin v. Cody, 144 Conn. 499, 505, 134 A.2d 245 (1957). Nor are the rights acquired by the initial filing of the lien substantively altered by its subsequent refiling for purposes of validation pursuant to General Statutes 49-35d. See Andrulat v. Brook Hollow Associates, 176 Conn. 409, 411, 407 A.2d 1017 (1979); Foran v. Zoning Board of Appeals, 158 Conn. 331, 337, 260 A.2d 609 (1969). The amendments to the mechanic's lien act necessitated by our decision in Roundhouse, supra, were not designed to supersede entirely the previously existing mechanic's lien laws but rather were intended to provide procedural safeguards to make the act constitutional. The trial court concluded that Camputaro had a valid mechanic's lien because road work and site preparation constituted "materials furnished or services rendered in the construction, raising, removal or repairs of any building or any of its appurtenances," which is the operative language of General Statutes 49-33 as it existed at' the time of the initial filing. The defendants maintain, and we agree, that this conclusion was in error.

Whether work done in furnishing materials and rendering services is work lienable under the mechanic's lien act is a question that this court has addressed with relative infrequency over the past 120 years. We have never had the occasion to consider the lienability of road work and site preparation. Nevertheless, the principles that guide our interpretation of mechanic's lien legislation are well settled. Although this legislation creates a statutory lien in derogation of the common law; Gruss v. Miskinis, 130 Conn. 367, 370, 34 A.2d 600 (1943); National Fireproofing Co. v. Huntington, 81 Conn. 632, 634, 71 A. 911 (1909); see also Willoughby v. New Haven, 123 Conn. 446, 454, 197 A. 85 (1937); its remedial purpose to furnish security for a contractor's labor and materials requires a generous construction. Stone v. Rosenfield, 141 Conn. 188, 191, 104 A.2d 545 (1954); City Lumber Co. v. Borsuk, 131 Conn. 640, 645, 41 A.2d 775 (1945); Pierce, Butler Pierce Mfg. Corporation v. Enders, 118 Conn. 610, 615, 174 A. 169 (1934); Balch v. Chaffee, 73 Conn. 318, 320, 47 A. 327 (1900). Generosity of spirit does not, however, permit departure from reasonable compliance with the specific provisions of the statute. Stone v. Rosenfield, supra; City Lumber Co. v. Borsuk, supra. It is clear, furthermore, that the provisions of our statute differ sufficiently from the mechanic's lien legislation of other states so that precedents elsewhere are of limited utility in the interpretation of our act. New Haven Orphan Asylum v. Haggerty Co., 108 Conn. 232, 236, 142 A. 847 (1928); Hartford Builders Finish Co. v. Anderson, 99 Conn. 343, 345, 122 A. 76 (1923).

Camputaro's work on the Paley property was performed at a time when the mechanic's lien act made lienable "materials furnished or services rendered in the construction, raising, removal or repairs of any building or any of its appurtenances . . . ." General Statutes 49-33 (Rev. to 1972) It is significant that the statute did not then expressly cover improvements to realty, although such language is found in the statutes of other states, and is now in 49-33 as amended effective October 1, 1974.

Our cases construing the language of the then existing statute have required, as a condition of lienability, that the work done be incorporated in or utilized in the building (or the appurtenance) to be constructed, raised, removed or repaired. The strongest precedent for the plaintiff is Marchetti v. Sleeper, 100 Conn. 339, 342, 123 A. 845 (1924), which held that an architect's plans and specifications constitute lienable services rendered in the construction of a building. But Marchetti goes on to observe that "there can be no lien until some actual or theoretical increment of value has attached itself to the land by the commencement of the building . . . ." (Emphasis added.) Ibid. Our other cases have consistently, with equal emphasis, insisted that mechanic's lien work be "wrought into" the liened property in some fashion. Thus the installation of fixtures that do not become part of the realty; Hartlin v. Cody, 144 Conn. 499, 506, 134 A.2d 245 (1957); or of electrical work that is not permanently attached to the realty; Stone v. Rosenfield, 141 Conn. 188, 192, 104 A.2d 545 (1954); Abbadessa v. Puglisi, 101 Conn. 1, 124 A. 838 (1924); the removal of pipe from one building that is not incorporated into the building that is its replacement; Hillhouse v. Duca, 101 Conn. 92, 101, 125 A. 367 (1924); and the furnishing of materials or equipment that is not shown to have gone into the construction or repair of a building; Lewin Sons, Inc. v. Herman, 143 Conn. 146, 150, 120 A.2d 423 (1956); Chapin v. Persse Brooks Paper Works, 30 Conn. 461, 473 (1862); Rose v. Persse Brooks Paper Works, 29 Conn. 256, 267-68 (1860); are all unlienable. Balch v. Chaffee, 73 Conn. 318, 321, 47 A. 327 (1900), did hold lienable as an appurtenance the construction of an artesian well not physically connected to the house which it was to serve, but Balch v. Chaffee, supra, 320, describes the category of appurtenance as one of "detached structures" (emphasis added) and its holding, thus limited, is therefore consistent with the structural constraints that our other cases have uniformly imposed.

This well settled interpretation of the mechanic's lien act leads inexorably to the conclusion that lien-ability of Camputaro's work cannot be sustained because the work was never incorporated in the construction, raising, removal or repair of any building or appurtenance thereto. Had the contemplated building been completed, had it even been begun, the test of Balch v. Chaffee, supra, and Marchetti v. Sleeper, supra, looking to whether the work done was a convenient necessity to the building's construction, might well have brought the plaintiff within the ambit of the act. Regrettably for Camputaro, the evidence at trial showed only that the prefabricated building had been acquired and delivered to the Paleys' property and not that it had been erected in whole or in part.

It may well be that cases like this one led to the amendment of 49-33. It is surely a hard result to have lien-ability turn on conduct of the owner of property that a contractor has no reason to expect and no power to control. Under 49-33, as amended, the mechanic's lien has been extended to encompass claims for materials furnished or services rendered "in the improvement of any lot or in the site development or subdivision of any plot of land . . . ." The specificity of this language, when compared to its statutory predecessor, lends support to our conclusion that the statute before its amendment did not make lienable work done in road construction and site preparation. The purposeful addition of language to provide coverage for "improvement" and "site development," is a strong indication that such work was not previously lienable. See Engle v. Personnel Appeal Board, 175 Conn. 127, 129-30, 394 A.2d 731 (1978); State ex rel. Kennedy v. Frauwirth, 167 Conn. 165, 168, 355 A.2d 39 (1974). Although the legislative history of the amended 49-33 is, as is often true, somewhat murky, it is consistent with an intention to expand the coverage of the mechanic's lien.

II

The unavailability of the mechanic's lien to the plaintiff defeats entirely his claim to recover on the first count of his complaint. On the second count, relating to the liability of the corporate defendant, Hardwood, as a matter of contract law, two issues remain to be addressed.

The defendant contends that it was improperly assessed for three items of damages not contemplated by the contract. The agreement of the parties originally called for the work to be done on a daily basis with records to be kept by the use of daily tickets. The defendant claims it is not responsible for invoices submitted without daily tickets after the work on the site preparation project had been stopped. These invoices, amounting to $16,800 in the aggregate, covered supervision, use of a "grader" and insurance.

In order to sustain the defendant's contention, we would have to ignore the testimony of the plaintiff which the trial court was entitled to find credible and persuasive. The court's finding of fact that the parties had agreed to these items and that the plaintiff had submitted reasonable bills therefor, having a legal and logical foundation in the evidence, cannot be disturbed. State National Bank v. Dick, 164 Conn. 523, 531, 325 A.2d 235 (1973); Brauer v. Freccia, 159 Conn. 289, 293, 268 A.2d 645 (1970); Craig v. Dunleavy, 154 Conn. 100, 105, 221 A.2d 855 (1966). The conclusion of the trial court that the plaintiff is entitled to recover $110,048.76 plus interest at 18 percent per annum from the defendant Hardwood is not clearly erroneous in light of the record as a whole.

The defendant's final contention is that a judgment in the amount of $110,048.76 plus interest is not sustainable in light of the ad damnum clause in the plaintiff's complaint which sought damages in the amount of $150,000. Although this issue was not initially assigned as error, it is properly before us under Practice Book, 1978, 3060W, which abolishes the necessity of filing assignments of error. The revision of the Practice Book which enables the defendant belatedly to raise the issue is, however, of equal assistance to the plaintiff, for Practice Book, 1978, 131 abolishes the requirement that a complaint contain a specific statement of the amount in demand. There is no reason not, to apply this salutary procedural reform to the plaintiff's complaint. The trial court's judgment on the second count was therefore not in error.