  We present initial results from a wide-field (30,000 deg^2) search for L/T
transition brown dwarfs within 25 pc using the Pan-STARRS1 and WISE surveys.
Previous large-area searches have been incomplete for L/T transition dwarfs,
because these objects are faint in optical bands and have near-infrared colors
that are difficult to distinguish from background stars. To overcome these
obstacles, we have cross-matched the Pan-STARRS1 (optical) and WISE (mid-IR)
catalogs to produce a unique multi-wavelength database for finding ultracool
dwarfs. As part of our initial discoveries, we have identified seven brown
dwarfs in the L/T transition within 9-15 pc of the Sun. The L9.5 dwarf PSO
J140.2308+45.6487 and the T1.5 dwarf PSO J307.6784+07.8263 (both independently
discovered by Mace et al. 2013) show possible spectroscopic variability at the
Y- and J-bands. Two more objects in our sample show evidence of photometric
J-band variability, and two others are candidate unresolved binaries based on
their spectra. We expect our full search to yield a well-defined,
volume-limited sample of L/T transition dwarfs that will include many new
targets for study of this complex regime. PSO J307.6784+07.8263 in particular
may be an excellent candidate for in-depth study of variability, given its
brightness (J = 14.2 mag) and proximity (11 pc).
