(2) For any real property to be acquired by eminent domain pursuant to section 8-128 or 8-193, or by condemnation pursuant to section 32-224, pursuant to a redevelopment plan approved under this chapter or a development plan approved under chapter 132 or 588l, the agency shall have two independent appraisals conducted on the real property in accordance with this subdivision. Each appraisal shall be conducted by a state-certified real estate appraiser without consultation with the appraiser conducting the other independent appraisal, and shall be conducted in accordance with generally accepted standards of professional appraisal practice as described in the Uniform Standards of Professional Appraisal Practice issued by the Appraisal Standards Board of the Appraisal Foundation pursuant to Title XI of FIRREA and any regulations adopted pursuant to section 20-504. Each appraiser shall provide a copy of the appraisal to the agency and the property owner. The amount of compensation for such real property shall be equal to the average of the amounts determined by the two independent appraisals, except that the compensation for any real property to be acquired by eminent domain pursuant to section 8-193 or by condemnation pursuant to section 32-224 shall be one hundred twenty-five per cent of such average amount. If the agency acquires real property that is subject to this subdivision five years or more after acquiring another parcel of real property within one thousand feet of the property pursuant to a redevelopment plan or development plan, the agency shall increase the amount of compensation for the subsequent acquisition of real property by an additional five per cent for each year from the sixth year until the tenth year after the acquisition of the first parcel of real