(a) The amount of the grant approved by the Commissioner of Administrative Services under the provisions of this chapter for any completed school building project shall be computed as follows:

(1) For the fiscal year ending June 30, 2012, and each fiscal year thereafter, in the case of a new school plant, an extension of an existing school building or projects involving the major alteration of any existing building to be used for school purposes, the eligible percentage, as determined in § 10-285a, of the result of multiplying together the number representing the highest projected enrollment, based on data acceptable to the Commissioner of Administrative Services, for such building during the eight-year period from the date a local or regional board of education files a notification of a proposed school building project with the Department of Administrative Services, the number of gross square feet per pupil determined by the Commissioner of Administrative Services to be adequate for the kind of educational program or programs intended, and the eligible cost of such project, divided by the gross square feet of such building, or the eligible percentage, as determined in § 10-285a, of the eligible cost of such project, whichever is less;

(2) In the case of projects involving the purchase of an existing building to be used for school purposes, the eligible percentage, as determined in § 10-285a, of the eligible cost as determined by the Commissioner of Administrative Services, provided any project involving the purchase and renovation of an existing facility, may be exempt from the standard space specifications, and otherwise ineligible repairs and replacements may be considered eligible for reimbursement as part of such a project, if information is provided acceptable to the Commissioner of Administrative Services documenting the need for such work and the cost savings to the state and the school district of such purchase and renovation project in comparison to alternative construction options;

(3) If any school building project described in subdivisions (1) and (2) of this subsection includes the construction, extension or major alteration of outdoor athletic facilities, tennis courts or a natatorium, gymnasium or auditorium, the grant for the construction of such outdoor athletic facilities, tennis courts and natatorium shall be limited to one-half of the eligible percentage for subdivisions (1) and (2) of the net eligible cost of construction thereof; the grant for the construction of an area of spectator seating in a gymnasium shall be one-half of the eligible percentage for subdivisions (1) and (2) of the net eligible cost of construction thereof; and the grant for the construction of the seating area in an auditorium shall be limited to one-half of the eligible percentage for subdivisions (1) and (2) of the net eligible cost of construction of the portion of such area that seats one-half of the projected enrollment of the building, as defined in subdivision (1) of this subsection, which it serves;

(4) In the case of a regional agricultural science and technology education center or the purchase of equipment pursuant to subsection (a) of § 10-65 or a regional special education facility pursuant to § 10-76e, an amount equal to eighty per cent of the eligible cost of such project, as determined by the Commissioner of Administrative Services;

(5) In the case of a public school administrative or service facility, one-half of the eligible percentage for subdivisions (1) and (2) of this subsection of the eligible project cost as determined by the Commissioner of Administrative Services, or in the case of a regional educational service center administrative or service facility, the eligible percentage, as determined pursuant to subsection (c) of § 10-285a, of the eligible project cost as determined by the commissioner;

(6) In the case of the total replacement of a roof or the total replacement of a portion of a roof which has existed for at least twenty years, or in the case of the total replacement of a roof or the total replacement of a portion of a roof which has existed for fewer than twenty years when it is determined by a registered architect or registered engineer that such roof was improperly designed or improperly constructed and the town is prohibited from recovery of damages or has no other recourse at law or in equity, the eligible percentage for subdivisions (1) and (2) of this subsection, of the eligible cost as determined by the Commissioner of Administrative Services. In the case of the total replacement of a roof or the total replacement of a portion of a roof which has existed for fewer than twenty years (A) when it is determined by a registered architect or registered engineer that such roof was improperly designed or improperly constructed and the town has recourse at law or in equity and recovers less than such eligible cost, the eligible percentage for subdivisions (1) and (2) of this subsection of the difference between such recovery and such eligible cost, and (B) when the roof is at least fifteen years old but less than twenty years old and it cannot be determined by a registered architect or registered engineer that such roof was improperly designed or improperly constructed, the eligible percentage for subdivisions (1) and (2) of this subsection of the eligible project costs provided such costs are multiplied by the ratio of the age of the roof to twenty years. For purposes of this subparagraph, the age of the roof shall be determined in whole years to the nearest year based on the time between the completed installation of the old roof and the date of the grant application for the school construction project for the new roof;

(7) In the case of projects to correct code violations, the eligible percentage, as determined in § 10-285a, of the eligible cost as determined by the Commissioner of Administrative Services;

(8) In the case of a renovation project, the eligible percentage as determined in subsection (b) of § 10-285a, multiplied by the eligible costs as determined by the Commissioner of Administrative Services, provided the project may be exempt from the standard space specifications, and otherwise ineligible repairs and replacements may be considered eligible for reimbursement as part of such a project, if information is provided acceptable to the Commissioner of Administrative Services documenting the need for such work and the cost savings to the state and the school district of such renovation project in comparison to alternative construction options;

(9) In the case of projects approved to remedy certified school indoor air quality emergencies, the eligible percentage, as determined in § 10-285a, of the eligible cost as determined by the Commissioner of Administrative Services;

(10) In the case of a project involving a turn-key purchase for a facility to be used for school purposes, the eligible percentage, as determined in § 10-285a, of the net eligible cost as determined by the Commissioner of Administrative Services, except that for any project involving such a purchase for which an application is made on or after July 1, 2011, (A) final plans for all construction work included in the turn-key purchase agreement shall be approved by the Commissioner of Administrative Services in accordance with § 10-292, and (B) such project may be exempt from the standard space specifications, and otherwise ineligible repairs and replacements may be considered eligible for reimbursement as part of such project, if information acceptable to the Commissioner of Administrative Services documents the need for such work and that such a purchase will cost less than constructing the facility in a different manner and will result in a facility taking on a useful life comparable to that of a new facility.

(b) (1) In the case of all grants computed under this section for a project which constitutes a replacement, extension or major alteration of a damaged or destroyed facility, no grant may be paid if a local or regional board of education has failed to insure its facilities and capital equipment in accordance with the provisions of § 10-220. The amount of financial loss due to any damage or destruction to any such facility, as determined by ascertaining the replacement value of such damage or destruction, shall be deducted from project cost estimates prior to computation of the grant.

(2) In the case of any grants computed under this section for a school building project authorized pursuant to § 10-283 after July 1, 1979, any federal funds or other state funds received for such school building project shall be deducted from project costs prior to computation of the grant.

(3) The calculation of grants pursuant to this section shall be made in accordance with the state standard space specifications in effect at the time of the final grant calculation, except that on and after July 1, 2005, in the case of a school district with an enrollment of less than one hundred fifty students in grades kindergarten to grade eight, inclusive, state standard space specifications shall not apply in the calculation of grants pursuant to this section and the Commissioner of Administrative Services, in consultation with the Commissioner of Education, may modify the standard space specifications for a project in such district.

(c) In the computation of grants pursuant to this section for any school building project authorized by the General Assembly pursuant to § 10-283 (1) after January 1, 1993, any maximum square footage per pupil limit established pursuant to this chapter or any regulation adopted by the State Board of Education or the Department of Administrative Services pursuant to this chapter shall be increased by twenty-five per cent for a building constructed prior to 1959; (2) after January 1, 2004, any maximum square footage per pupil limit established pursuant to this chapter or any regulation adopted by the Department of Administrative Services pursuant to this chapter shall be increased by up to one per cent to accommodate a heating, ventilation or air conditioning system, if needed; (3) for the period from July 1, 2006, to June 30, 2009, inclusive, for projects with total authorized project costs greater than ten million dollars, if total construction change orders or other change directives otherwise eligible for grant assistance under this chapter exceed five per cent of the authorized total project cost, only fifty per cent of the amount of such change order or other change directives in excess of five per cent shall be eligible for grant assistance; and (4) after July 1, 2009, for projects with total authorized project costs greater than ten million dollars, if total construction change orders or other change directives otherwise eligible for grant assistance exceed five per cent of the total authorized project cost, such change order or other change directives in excess of five per cent shall be ineligible for grant assistance.

(d) For any school building project receiving state grant assistance under this chapter, all change orders or other change directives issued for such project (1) on or after July 1, 2008, until June 30, 2011, shall be submitted, not later than six months after the date of such issuance, to the Commissioner of Education, and (2) on or after July 1, 2011, shall be submitted, not later than six months after the date of such issuance, to the Commissioner of Administrative Services, in a manner prescribed by the Commissioner of Administrative Services. Only change orders or other change directives submitted to the Commissioner of Education or Commissioner of Administrative Services, as applicable, in accordance with this subsection shall be eligible for state grant assistance.