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In order to answer some of the major open questions in the fields ofsupermassive black hole (SMBH) and galaxy evolution, a complete census of SMBHgrowth, i.e., active galactic nuclei (AGN), is required. Thanks to deep all-skysurveys, such as those by the Wide-field Infrared Survey Explorer (WISE) andthe Spectrum-Roentgen-Gamma (SRG) missions, this task is now becoming feasiblein the nearby Universe. Here, we present a new survey, the Local AGN Survey(LASr), with the goal of identifying AGN unbiased against obscuration anddetermining the intrinsic Compton-thick (CT) fraction. First, we construct themost complete all-sky sample of galaxies within 100 Mpc from astronomicaldatabases (90% completeness for log M_star/M_sun ~9.4), four times deeper thanthe current local galaxy reference, the Two Micron All-Sky Survey RedshiftSurvey (2MRS), which turns out to miss 20% of known luminous AGN. These 49kgalaxies serve as parent sample for LASr, called LASr-GPS. It contains 4.3kalready known AGN, >=82% of these are estimated to have L(12um) < 10^42.3erg/s, i.e., are low-luminosity AGN. As a first method for identifyingSeyfert-like AGN, we use WISE-based infrared colours, finding 221 galaxies atL(12um) >= 10^42.3 erg/s to host an AGN at 90% reliability, This includes 61new AGN candidates and implies and optical type 2 fraction of 50 to 71%. Wequantify the efficiency of this technique and estimate the total number of AGNwith L_int(2-10 keV) >= 10^42 erg/s in the volume to be 362^+145_-116(8.6^+3.5_-2.8 10^-5 Mpc^-3). X-ray brightness estimates indicate the CTfraction to be 40-55% to explain the Swift non-detections of the infraredselected objects. One third of the AGN within 100 Mpc remain to be identifiedand we discuss the prospects for the eROSITA all-sky survey.

Local AGN Survey (LASr): I. Galaxy sample, infrared colour selection and predictions for AGN within 100 Mpc