Dillard, Chief Judge.In this property-tax appeal, White Horse Partners LLLP and Loblolly Investments LLLP (“Appellants”) challenge an adverse decision from the Monroe County Board of Equalization (“the Board”). Prior to a jury trial in an appeal of the Board’s tax assessment of their property, Appellants filed motions in limine as to the Board’s testimony and evidence on the value of standing timber, and the trial court denied those motions. A jury then returned a verdict upholding the Board’s assessment of Appellants’ property. Appellants now argue that the trial court erred in failing to exclude (1) the expert testimony proffered by the Board regarding estimates of timber value and (2) inadmissible hearsay testimony of out-of-court appraisers. For the reasons set forth infra, we affirm.The record shows that Appellants own a 250-acre tract of timberland in Monroe County, the use of which has, for decades, been continuously devoted to the commercial production of timber. In 2008, as part of a countywide revaluation of rural properties, the Board increased the property tax fair market value for Appellants’ land from the 2007 rate of $309,175 to a new rate of $834,900, which was later reduced to $626,200 after an appeal.[1] Appellants testified that their line-item expenses for property taxes rose to $25.87 per acre, and they subsequently appealed the value to the superior court.[2]Due to the scale of the project and level of expertise required, the Board’s 2008 revaluation of rural properties was conducted by a third-party appraisal firm. According to the president of that firm, a mass appraisal of all agricultural tracts in the County was conducted by extrapolating from twenty-three comparable sales. Prior to using a comparable sale in the study, the firm would attempt to remove the value of standing timber from the sale price in order to reach the “bare land value.” Thus, on the spreadsheet compiled by the firm president, the estimated value of standing timber was the difference between the comparable properties’ sale price and their adjusted sale price.Prior to trial, Appellants filed motions in limine to exclude the firm president’s testimony and evidence as to estimates of timber value on the basis that his estimates were too speculative. And after hearing argument on the motions, the trial court denied them. Then, at trial, the court also permitted the Board to present, over objection, rebuttal testimony on the value of timberland that was based upon a report the court did not admit into evidence but about which it permitted the Board’s witness to testify. Ultimately, the jury returned a verdict upholding the Board’s 2008 assessment of the Appellants’ property, and the trial court then denied Appellants’ motion for new trial. This appeal follows, in which the Appellants challenge the trial court’s denial of their motions in limine and the admission of certain evidence.As a general rule, admission of evidence is “a matter resting within the sound discretion of the trial court, and appellate courts will not disturb the exercise of that discretion absent evidence of its abuse.”[3] With this guiding principle in mind, we turn now to Appellants’ enumerations of error.1. First, Appellants argue that the trial court erred in failing to exclude the estimates of timber value proffered by the Board’s expert when they were too speculative. More specifically, Appellants argue that the trial court erred in admitting the testimony of the firm president as an expert. We disagree.As an initial matter, we note that Appellants refer to and rely upon OCGA § 24-9-67.1, a statute that was repealed by the enactment of our new Evidence Code (which became effective January 1, 2013, and which applies in this case because it was tried after that date).[4] Georgia’s expert-witness requirements are now codified in OCGA § 24-7-702. We take this opportunity, yet again, to remind our trial courts and lawyers of the importance of relying upon the new Evidence Code, as well as its accompanying case law, in addressing evidentiary issues arising after the new code’s effective date.[5]To that end, OCGA § 24-7-702 (b) provides as follows:If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education may testify thereto in the form of an opinion or otherwise, if:(1) The testimony is based upon sufficient facts or data;(2) The testimony is the product of reliable principles and methods; and(3) The witness has applied the principles and methods reliably to the facts of the case which have been or will be admitted into evidence before the trier of fact.In this case, Appellants (essentially) maintain that the testimony from the firm president failed to meet this criteria.At the outset of his testimony, the firm president first described his education, training, and experience in forestry and conducting appraisals, including mass appraisals, and his experience testifying in court as an expert witness. Thereafter, the trial court permitted him to testify as an expert appraiser. The witness then provided additional details regarding his experience as a forester, and the court accepted him as an expert in forestry as well.The firm president subsequently testified as to the revaluation that was conducted in 2008, in which his company used a “sales comparison approach.” He testified that every single property was visited in person on two occasions, and then explained the characteristics considered when determining a property’s fair market value. Importantly, the firm president testified that he personally valued all of the large-acreage agricultural tracts in Monroe County during the 2008 revaluation. And when compiling comparable sales, in order to calculate the timber values for those properties, he would either consult with a local forester or the property owners about their values, or, if that was not possible, conduct a “strip cruise” or “timber cruise” on the properties.[6]With this information in hand, the firm president compiled a spreadsheet of Monroe County agricultural-tract sales in 2006 and 2007. In that spreadsheet, the “bare land value”—i.e., the value of the land after subtracting the value of the timber—of the comparable-sale properties was reflected as the “adjusted sales price.” And according to the list, the lowest per-acre sale of the comparable properties was almost double what Appellants claimed the subject property was worth per acre. In order to assist in completing a valuation of the subject-property (and the other properties during the revaluation), the witness used Georgia-specific appraisal software that was developed through the Georgia Department of Revenue, and he explained to the jury in detail the development of this software and how it works. Ultimately, the 2008 property valuations were reviewed and approved by both the Georgia Department of Revenue and the Department of Audits and Accounts, resulting in approval of the 2008 tax digest for Monroe County.On cross-examination, when asked to again explain how the timber values were calculated, the firm’s president testified that the values were “arrived at by research and by visiting the parcels, by having some of them cruised, by talking to two local foresters that are involved in transactions within the county. [And] some property owners sent us values in [ ] letters. There were multiple ways the timber values were arrived at.” He was then further pressed about the “appraisal procedures manual” and its directives for establishing timber value, and he testified that his methods were consistent with the appraisal procedures manual’s directives, which also permit multiple methods for estimating timber value if information from the property’s buyer and seller is not available.[7] And although he could not recall in detail specifically how he reached the timber value for each of the comparable properties, he repeatedly testified, during extensive cross-examination and redirect, that it was done by one of the manners and in the method he previously described.On appeal, Appellants are primarily concerned with the firm president’s inability to recall specifically, with regard to each comparable sale, how he reached the estimated value of timber. Thus, as they did in their motion for new trial, Appellants challenge the reliability of the firm president’s methodology. But as previously explained, the firm president testified that the comparable-sale valuations were completed in one of a few acceptable manners, and he described the methods he followed. Accordingly, Appellants have failed to show that the expert’s testimony was wholly cumulative or conjectural, which is the appropriate standard for assessing the admissibility of expert opinions.[8] And even to the extent that an expert’s testimony is based partially on speculation, such a fact “goes to its weight rather than its admissibility.”[9] Thus, the trial court did not abuse its discretion in permitting the firm president’s testimony as to timber values when Appellants have not shown that the testimony was wholly speculative or conjectural, or that it was not the product of reliable principles and methods.[10]2. Next, Appellants argue that the trial court erred in permitting inadmissible hearsay testimony from the Board’s rebuttal witness, which referenced and relied upon opinions from out-of-court appraisers that were contained in a report the trial court did not admit into evidence. Again, we disagree.The record shows that, in rebuttal, the Board recalled a witness who was a forester, licensed real estate broker, and certified tax assessor. He was also the president of a timber company, and the current chairman of the Monroe County Board of Tax Assessors, which he initially joined in 2010. And during the course of the trial, he had an opportunity to search through records kept in the regular course of business of his timber company. In doing so, he located records related to the purchase of property in Monroe County, which included appraisals conducted on timberland in 2008. As a result, the Board wished to present testimony about these appraisals to rebut the Appellants’ assertion that timberland in Monroe County in 2008 was worth $1,100 an acre.Prior to further testimony about this newly discovered appraisal, Appellants objected on a number of grounds, one of which was that the document contained inadmissible hearsay because the appraisal was conducted by another company, not by the witness or his company. Ultimately, the trial court ruled that the document itself would not be admitted but that the witness could testify about the conclusions reached in it.[11] And the witness thereafter testified that the appraisal conducted for his company in 2008 showed the average per-acre price of timberland in Monroe County varied from $2,275 to $5,850. He also testified this conclusion was almost exactly the same as that reached by the third-party company hired to conduct the revaluation for Monroe County during that same time period.Appellants argue that the trial court erred in permitting the witness to testify about this document because it contained inadmissible hearsay—namely, the conclusions reached by out-of-court appraisers who were not available for cross examination. But even if the trial court erred in permitting the witness to testify about the contents of this document, his testimony as to the estimated value of timberland in Monroe County in 2008 was cumulative of other admissible evidence, i.e., that of the witness discussed in Division 1, supra. And it is well established that admission of hearsay is harmless when “it is cumulative of legally admissible evidence showing the same fact.”[12] Indeed, the complained-of testimony regarding the value of timber was brief, consisting of approximately one half-page in 21 pages of rebuttal testimony, whereas the same or similar facts were testified to at length earlier in the trial by other witnesses (including the president of the firm that conducted the revaluation on behalf of Monroe County). Accordingly, this enumeration of error does not require reversal.[13]For all these reasons, we affirm the trial court’s denial of Appellants’ motion for new trial.Judgment affirmed. Doyle, P. J., and Mercier, J., concur.