We have reconsidered our decision in light of appellees’ motion for rehearing and new authority urged in appellees’ post-submission brief which inadvertently escaped the court’s attention. We have granted appellees’ motion for rehearing and now withdraw our original opinion and substitute the following decision.
Houston Lighting and Power Company (HL&P) appealed the trial court’s judgment for recovery of delinquent ad valorem taxes, attorney’s fees plus post-judgment interest on thosе amounts, and court costs in favor of appellees, Dickinson Independent School District (Dickinson), its Board of Trustees (Trustees), the Board of Equalization (Board), and the Tax Assessor-Collector, Mr. Wilson S. Deats (Deats). HL&P asserts twenty-two points of error on appeal challenging the findings of fact and conclusions of law, the state of the evidence, and the assessment of attorney’s fees, post-judgment interest and court costs. We affirm.
HL&P owns the P.H. Robinson generating fаcility and cooling towers located within the Dickinson district which began property reappraisal in early 1980. Having received notice of a reappraisal of its properties, HL&P introduced valuation evidence including a sworn rendition at a public hearing held July 29,1980, which the Board took under advisement. The Board reconvened on August 26, 1980, heard further evidence brought by HL&P and went into executive session to deliberate. The Board completed its deliberations and informed HL&P of the new assessed value placed upon its properties and adjourned. HL&P notified the Board it disagreed with the valuation assessed prior to adjournment. HL&P filed suit against appellees pursuant to Tex.Rev.Civ.Stat.Ann. art. 7345f (Vernon 1979). In its original petition filed September 30, 1980, HL&P challenged and sought *305 to avoid the assessment on grounds of ex-cessiveness and discrimination. HL&P’s amended petition filed December 1, 1980, reiterated its assertions and sought injunc-tive relief and to mandamus Dickinson to re-vаlue the subject property. Appellees, defendants below, filed their original answer generally denying HL&P’s contentions on October 24,1980. HL&P unconditionally tendered $729,042.73 for taxes due to Dickinson on or about January 22, 1981. In their first amended answer filed March 16, 1981, appellees asserted a plea in abatement in regard to HL&P’s tender and a counterclaim for delinquent taxes. The trial court held a hearing on the plea in abatement on March 25,1981 and found HL&P’s tender of January 22, 1981, was not an equitable tender in gоod faith and entered an order sustaining the plea in abatement. HL&P’s second amended petition filed June 4, 1981 reiterated its previous contentions and also asserted violations of Tex.Rev.Civ.Stat.Ann. arts. 6252-17 and 7244c (Vernon Supp.1982). The case came to trial on June 17,1981 and the trial court signed its final judgment on August 11, 1981. In its findings of fact filed November 4, 1981, the trial court found, in pertinent part, that:
(1) The value of $253,025,790.00 for... the Power Company’s property... is not in excess of said property’s fair market value as of January 1, 1980.
(2) The Tax Assessor and Collector and the Board... assessed and equalized, respectively, the taxable property within the boundaries of the School District for the year 1980 at its fair market value as of January 1, 1980.
(3) On August 26, 1980, the Board... completed its inspection, hearings, examination, correction and equalization of values of all properties on the assessment lists or books... comprising the 1980 tax rolls, and approved same and finally adjournеd.
(4) The Power Company’s tender of its taxes for 1980 was not an equitable tender made in good faith.
(5) The Power Company failed to tender... the amount of taxes that it alleged, under its own theory, to be due and owing...
(6) The court duly heard and considered at the trial... all pleadings, evidence, stipulations, arguments of counsel, and prayers for relief including equitable relief, of the parties hereto; and the Court based its judgment and its findings of fact and conclusions of law upon all such elements, notwithstanding the interlocutory order sustaining the School District’s plea in abatement.
(7) On January 1, 1980, the Power Company owned the... property [at issue] located within the boundaries of the School District...
(8) The School District levied and assessed 1980 ad valorem taxes... of $2,533,481.68...
(9) The Power Company, after partial tender, is indebted to the School District for... $1,804,438.95.
(10) Attorney’s fees for the School District of $300,861.77, an amount equal to 15% of the total recovery for taxes, penalty and interest, are... reasonable...
(11) For work necessary to be performed if the Power Company appeals..., attorney’s fees for the School District of $100,-287.26, an amount equal to 5% of the total recovery for taxes, penalty, and interest, are... reasonable.
(12) The Power Company’s P.H. Robinson Electric Generating Plant, and Cooling Towers... is real estate...
In its conclusions of law, the trial court, in pertinent part, declared:
(1) Meetings of an independent school district board of equalization are not subject to Article 6252-17, Tex.Rev.Civ.Stat. Ann.
(2) Even if the enforcement provision of Section 3A of Article 6252-17, Tex.Rev.Civ.Stat.Ann., did apply... it would only apply to a failure to give sufficient notice of an intended meeting, and not to the failure to meet in open session.
(3) The meeting of the Board... on August 26, 1980, was an open meeting and would have ... complied with Article 6252-17... if said Act were applicable. ..
*306 (4) The certification of approval... involved no discretion or judgment. . ., and was purely a ministerial function.
(5) The School District complied with the requirements of Article 7244c, Tex.Rev.Civ.Stat.Ann.
(6) Delinquent taxes... of $1,804,438.95 for the year 1980 are justly due, owing and unpaid by the Power Company...
(7) The School District is entitled to receive from the Power Company the current 1981 taxes prorated up to and including the date of judgment. .. to be credited against... [HL&P’s] 1981 ad va-lorem tax liability...
(8) The School District is entitled to recover statutory interest... of 6% per an-num from February 1, 1981 until August 11, 1981.
(9) The School District is entitled to recover statutory penalty of 8% of the unpaid. .. taxes.
(10) The School District is entitled to recover $200,574.51 or ... 10%... as attorney’s fees together with statutory interest thereon from August 11, 1981.
(11) If the Power Company appeals. . . and if said appeal is being prosecuted and remains undecided on or after January 1, 1982, ... the School District is entitled to recover an additional $100,287.26 or ... 5%... for attorney’s fees, together with interest thereon at the statutory ratе from January 1, 1982, until paid.
(12) The School District is entitled to recover postjudgment interest at the rate of 9% per annum.
(13) The School District is entitled to and has a separate, valid, and subsisting lien on the property [at issue]... to secure payment...
On November 13, 1981, in response to HL&P’s objections to its findings of fact and conclusions of law, the trial court filed the additional findings that the fair market value of all HL&P’s property within the district was $258,438,360.00, which amount did not exceed fair market value. The court further found HL&P owned proрerty within the district for which it did not submit a rendition and which was not assessed for taxation purposes in 1980, and that the Tax Assessor and Collector assessed and the Board equalized property other than HL&P’s for 1980 at its fair market value. And finally, the court found HL&P had failed to prove its property had a value less than that set by the Board.
HL&P’s first through third points of error challenge the trial court’s findings that Dickinson and the Board complied with Article 7244c
1
as to approval and certification of the tax rolls. HL&P maintains Dickinson adopted a tax rate рrior to its approval and certification of the tax rolls, violating Art. 7244c §§ 1(a) and 2 and thereby nullifying the tax levy, and asserts the record is devoid of any evidence to prove Dickinson’s compliance with Art. 7244c. The language of 7244c § 1(a) is clearly mandatory, and this mandatory language was not changed in the new Property Tax Code which took effect on January 1, 1982 and is applicable to independent school districts. See, 1979 Tex.Gen.Laws, Ch. 841, § 1 ei
seq.
at 2217. Failure to comply with statutory directives in assessing taxes voids the assessment.
Federal Land Bank of Houston v. State,
“Viewing this record as a whole, we have concluded that the levy... although not strictly following the letter of the law, [was] not void but [was] well within the spirit of the law and constitute[s] substantial compliance with the law.” (Emphasis added). Id. at 607.
See also,
Blewett v. Richardson Independent School District,
*308
In its fourth point of error, HL&P contends the trial court erred in finding that approval and certification of the tax roles was a ministerial, not a discretionary, act. The record indicates the Board had completed all discrеtionary acts concerning valuation and assessment at the August 26th meeting at which it adjourned and ceased to function. See,
Lincoln v. Commissioners’ Court of Willacy County,
HL&P’s points of error five, six and fourteen through seventeen address the trial court’s findings in regard to HL&P’s unconditional tender. Points five and six urge the trial court’s finding of fact that HL&P was indebted for taxes for an amount exceeding its unconditional tender is not supported by the evidence and is against the great weight and preponderance of the evidence. Points fourteen through seventeen challenge the state of the evidence supporting the trial court’s findings that HL&P’s tender was not made in good faith and that HL&P failed to tender the amount of taxes due under its own valuation theory. Tex.Rev.Civ.Stat. Ann. art. 7057g § 1(b) (Vernon Supp.1982) provides that in the event an assessment is found invalid for lack of compliance with controlling statutes, the last valid tax levy remains in force. Therefore, even if we found the Board’s actions invalid, which we do not, HL&P would owe at least thе amount of its 1979 tax liability, $2,342,-717.20, which substantially exceeds its tender of $729,042.73. An offer to pay less than the amount due is ineffectual as a tender.
Baucum v. Great American Ins. Co. of New York,
Points of error fourteen through seventeen address the court’s findings concerning HL&P’s good faith in tendering $729,042.73 as taxes due and whether HL&P’s tax debt exceeded that tender under its own theory of valuation. We have already discussed the basic rules of tender and will not repeat them here. It is well settled that to receive equity, a party must do equity.
Harrison v. Vines,
Points of error seven through thirteen address the trial court’s findings as to valuation of HL&P’s property and the expert testimony introduced to prove its fair market value for purposes of taxation. HL&P maintains the value of $253,025,-790.00 placed upon its property is grossly excessive, unsupported by any competent evidence, and against the great weight and preponderance of the evidence. HL&P further asserts the testimony of appellees’ experts failed to base their valuation opinions upon a recognized theory. To support this contention, HL&P maintains appellees’ experts’ failure to employ the “unit” approach to determine value renders that testimony inadmissible and, therefore, the trial court erred in admitting it. Finally, HL&P complains no evidence supported the trial court’s finding that the taxable property within the district was equalized and placed on the tax roll at fair market value as of January 1, 1980; that this finding was against the great weight and preponderance of the evidence; and the uncontrovert-ed testimony of Charles Noble, retained by HL&P, shows substantial categories of property were not assessed at fair market value. HL&P maintains аll of the above resulted in a grossly excessive valuation which substantially injured HL&P. Where a taxpayer contends a property valuation is excessive, a court must find it to be so grossly excessive, i.e., so far above the fair cash market value, to raise a presumption that the Board acted fraudulently or did not make a fair, conscientious effort to derive the value.
Westwood Independent School District v. Southern Clay Products, Inc.,
HL&P’s points of error eighteen through twenty-two challenge the trial court’s award of $300,861.77 as attorney’s fees and post-judgment interest thereon. HL&P maintains the increase of the fee award from 10% to 15% of the taxes, penalty and interest was an impermissible retroactive application of § 33.48 of the Tax Code, which became effective January 1, 1982, to the judgment of August 11, 1981, be
*311
cause the trial court was only authorized to apply Tex.Rev.Civ.Stat.Ann. аrt. 7332 (Vernon 1979). HL&P further contends the evidence does not support the trial court’s finding an award of $100,287.26 on appeal was reasonable. Finally, HL&P complains of the award of post-judgment interest on the attorney’s fees. Any award of attorney’s fees, pursuant to statute or common law, rests within the discretion of the trial court and, absent evidence of an abuse of discretion, will not be overturned.
Espinoza v. Victoria Bank & Trust Co.,
Affirmed.
Notes
. Tex.Rev.Civ.Stat.Ann. art. 7244c (repealed, 1979 Tex.Gen.Laws, Ch. 841, § 6(a)(1) at 2329, effective Jan. 1, 1982). Article 7244c is derived from 1978 Tex.Gen.Laws, Ch. 8, §§ 1-7 at 18; 1979 Tex.Gen.Laws, Ch. 644, § 1 at 1475; and 1981 Tex.Gen.Laws, Ch. 851, §§ 2-3 at 3229. Hereafter the statute will be referred to as Art. 7244c without full citation.
