The incidence of dusty debris disks around low- and intermediate-mass stars has been investigated numerous times in order to understand the early stages of planet formation . Most notably , the IRAS mission observed the entire sky at mid- and far-IR wavelengths , identifying the first debris disk systems , but was unable to detect a statistically significant sample of warm debris disks due to its limited sensitivity at 12 \mu m. Using Tycho-2 Spectral Catalog stars previously shown to exhibit 8 \mu m mid-infrared circumstellar excesses confirmed at 24 \mu m in the Spitzer GLIMPSE survey , we investigate the frequency of mid-IR excesses among intermediate-mass ( 2–4 M _ { \odot } ) stars in a complete volume-limited sample . Our study of 338 stars is four times larger than a complete sample of 12 \mu m sources from the IRAS Point Source Catalog . We find that 0.3 \pm 0.3 \% of intermediate-mass stars exhibit a signature of a possible terrestrial-temperature debris disks at wavelengths of 8 \mu m and greater . We also find that 1.2 \pm 0.6 \% of intermediate-mass stars exhibit evidence for circumstellar disks undergoing inner disk clearing , i.e. , candidate transition disk systems . Using stellar lifetimes and the frequency of transition and primordial disks within a given spectral type , we find that pre-main-sequence disks around intermediate-mass stars dissipate in 5 \pm 2 Myr , consistent with other studies .