An elevated flooring surface assembly, comprising: a plurality of support pedestals disposed upon a fixed surface with a predetermined spacing between the support pedestals; a plurality of flooring units disposed over upper surfaces of the support pedestals to create an elevated flooring surface, wherein each flooring unit includes: a support plate including a base having a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, a plurality of outer edge segments disposed between adjacent corner portions, an outer periphery formed by the plurality of outer edge segments and the plurality of corner portions, and at least a first raised portion extending upwardly away from the top surface adjacent the outer periphery, wherein each support plate includes at least three corner portions that are respectively disposed over the top surfaces of at least three of the support pedestals; and a building surface component positioned over the top surface of the support plate, wherein the building surface component includes a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, and a plurality of outer edge segments disposed between adjacent corner portions, wherein a first corner portion of the plurality of corner portions of the building surface component is positioned adjacent a first corner portion of the plurality of corner portions of the support plate, and wherein the first raised portion contacts the bottom surface of the building surface component to create a gap between the top surface of the support plate and the bottom surface of the building surface component adjacent the outer periphery, wherein the gap opens between the outer edge segment of the support plate and the outer edge segment of the building surface component; and a plurality of attachment systems secured to the upper surfaces of the plurality of support pedestals for selective introduction into the gaps of the flooring units to secure the flooring units to the plurality of support pedestals. a plurality of support pedestals disposed upon a fixed surface with a predetermined spacing between the support pedestals; a plurality of flooring units disposed over upper surfaces of the support pedestals to create an elevated flooring surface, wherein each flooring unit includes: a support plate including a base having a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, a plurality of outer edge segments disposed between adjacent corner portions, an outer periphery formed by the plurality of outer edge segments and the plurality of corner portions, and at least a first raised portion extending upwardly away from the top surface adjacent the outer periphery, wherein each support plate includes at least three corner portions that are respectively disposed over the top surfaces of at least three of the support pedestals; and a building surface component positioned over the top surface of the support plate, wherein the building surface component includes a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, and a plurality of outer edge segments disposed between adjacent corner portions, wherein a first corner portion of the plurality of corner portions of the building surface component is positioned adjacent a first corner portion of the plurality of corner portions of the support plate, and wherein the first raised portion contacts the bottom surface of the building surface component to create a gap between the top surface of the support plate and the bottom surface of the building surface component adjacent the outer periphery, wherein the gap opens between the outer edge segment of the support plate and the outer edge segment of the building surface component; and a support plate including a base having a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, a plurality of outer edge segments disposed between adjacent corner portions, an outer periphery formed by the plurality of outer edge segments and the plurality of corner portions, and at least a first raised portion extending upwardly away from the top surface adjacent the outer periphery, wherein each support plate includes at least three corner portions that are respectively disposed over the top surfaces of at least three of the support pedestals; and a building surface component positioned over the top surface of the support plate, wherein the building surface component includes a top surface, a bottom surface opposite to the top surface, a plurality of corner portions, and a plurality of outer edge segments disposed between adjacent corner portions, wherein a first corner portion of the plurality of corner portions of the building surface component is positioned adjacent a first corner portion of the plurality of corner portions of the support plate, and wherein the first raised portion contacts the bottom surface of the building surface component to create a gap between the top surface of the support plate and the bottom surface of the building surface component adjacent the outer periphery, wherein the gap opens between the outer edge segment of the support plate and the outer edge segment of the building surface component; and a plurality of attachment systems secured to the upper surfaces of the plurality of support pedestals for selective introduction into the gaps of the flooring units to secure the flooring units to the plurality of support pedestals.