diff --git a/keyboards/tkc/california/california.c b/keyboards/tkc/california/california.c
new file mode 100644
index 00000000000..002732208f7
--- /dev/null
+++ b/keyboards/tkc/california/california.c
@@ -0,0 +1,18 @@
+/*
+Copyright 2021 Terry Mathews
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#include "california.h"
diff --git a/keyboards/tkc/california/california.h b/keyboards/tkc/california/california.h
new file mode 100644
index 00000000000..a438e6a0245
--- /dev/null
+++ b/keyboards/tkc/california/california.h
@@ -0,0 +1,50 @@
+/*
+Copyright 2021 Terry Mathews
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#pragma once
+
+#include "quantum.h"
+
+/* This a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT_all( \
+ K00, K02, K03, K04, K05, K06, K07, K08, K09, K61, K62, K63, K64, K65, K66, K67, K68, K69, \
+ K10, k11, K12, K13, K14, K15, K16, K17, K18, K19, K70, K71, K72, K73, K74, K75, K76, K77, K78, K79, \
+ K20, K22, K23, K24, K25, K26, K27, K28, K29, K80, K81, K82, K83, K84, K85, K86, K87, K88, K89, \
+ K30, K32, K33, K34, K35, K36, K37, K38, K39, K90, K91, K92, K93, K96, K97, K98, K99, \
+ K40, K42, K43, K44, K45, K46, K47, K48, K49, KA0, KA1, KA2, KA4, KA5, KA6, KA7, KA8, KA9, \
+ K50, K51, K52, K55, K58, KB0, KB2, KB4, KB5, KB6, KB7, KB8, KB9 \
+) { \
+ { K00, KC_NO, K02, K03, K04, K05, K06, K07, K08, K09 }, \
+ { K10, k11, K12, K13, K14, K15, K16, K17, K18, K19 }, \
+ { K20, KC_NO, K22, K23, K24, K25, K26, K27, K28, K29 }, \
+ { K30, KC_NO, K32, K33, K34, K35, K36, K37, K38, K39 }, \
+ { K40, KC_NO, K42, K43, K44, K45, K46, K47, K48, K49 }, \
+ { K50, K51, K52, KC_NO, KC_NO, K55, KC_NO, KC_NO, K58, KC_NO }, \
+ { KC_NO, K61, K62, K63, K64, K65, K66, K67, K68, K69 }, \
+ { K70, K71, K72, K73, K74, K75, K76, K77, K78, K79 }, \
+ { K80, K81, K82, K83, K84, K85, K86, K87, K88, K89 }, \
+ { K90, K91, K92, K93, KC_NO, KC_NO, K96, K97, K98, K99 }, \
+ { KA0, KA1, KA2, KC_NO, KA4, KA5, KA6, KA7, KA8, KA9 }, \
+ { KB0, KC_NO, KB2, KC_NO, KB4, KB5, KB6, KB7, KB8, KB9 } \
+}
diff --git a/keyboards/tkc/california/config.h b/keyboards/tkc/california/config.h
new file mode 100644
index 00000000000..78208691425
--- /dev/null
+++ b/keyboards/tkc/california/config.h
@@ -0,0 +1,123 @@
+/*
+Copyright 2021 Terry Mathews
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x544B //TK
+#define PRODUCT_ID 0x0009
+#define DEVICE_VER 0x0001
+#define MANUFACTURER TKC
+#define PRODUCT California
+
+/* key matrix size */
+#define MATRIX_ROWS 12
+#define MATRIX_COLS 10
+
+#define DYNAMIC_KEYMAP_LAYER_COUNT 2 //Reduced layer count due to memory space considerations
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ * ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+#define MATRIX_ROW_PINS { C7, C6, B6, D4, D3, D0, E6, B0, B1, B2, D2, B3 }
+#define MATRIX_COL_PINS { B5, B4, D7, D6, F7, F6, F5, D5, D1, F4 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION ROW2COL
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+//#define SOFT_SERIAL_PIN D0 // or D1, D2, D3, E6
+#define BACKLIGHT_PIN B7
+#ifdef BACKLIGHT_PIN
+#define BACKLIGHT_BREATHING
+#define BACKLIGHT_LEVELS 3
+#endif
+#define LED_NUM_LOCK_PIN F1
+#define LED_CAPS_LOCK_PIN F0
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Feature disable options
+ * These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/tkc/california/info.json b/keyboards/tkc/california/info.json
new file mode 100644
index 00000000000..ef55e0e2e03
--- /dev/null
+++ b/keyboards/tkc/california/info.json
@@ -0,0 +1,10 @@
+{
+ "keyboard_name": "TKC California",
+ "url": "",
+ "maintainer": "TerryMathews",
+ "layouts": {
+ "LAYOUT_all": {
+ "layout": [{"label":"Esc", "x":0, "y":0}, {"label":"F1", "x":2, "y":0}, {"label":"F2", "x":3, "y":0}, {"label":"F3", "x":4, "y":0}, {"label":"F4", "x":5, "y":0}, {"label":"F5", "x":6.5, "y":0}, {"label":"F6", "x":7.5, "y":0}, {"label":"F7", "x":8.5, "y":0}, {"label":"F8", "x":9.5, "y":0}, {"label":"F9", "x":11, "y":0}, {"label":"F10", "x":12, "y":0}, {"label":"F11", "x":13, "y":0}, {"label":"F12", "x":14, "y":0}, {"label":"PrtSc", "x":15.5, "y":0}, {"label":"Home", "x":17, "y":0}, {"label":"End", "x":18, "y":0}, {"label":"Scroll Lock", "x":19, "y":0}, {"label":"Pause", "x":20, "y":0}, {"label":"~", "x":0, "y":1.5}, {"label":"!", "x":1, "y":1.5}, {"label":"@", "x":2, "y":1.5}, {"label":"#", "x":3, "y":1.5}, {"label":"$", "x":4, "y":1.5}, {"label":"%", "x":5, "y":1.5}, {"label":"^", "x":6, "y":1.5}, {"label":"&", "x":7, "y":1.5}, {"label":"*", "x":8, "y":1.5}, {"label":"(", "x":9, "y":1.5}, {"label":")", "x":10, "y":1.5}, {"label":"_", "x":11, "y":1.5}, {"label":"+", "x":12, "y":1.5}, {"label":"Bksp", "x":13, "y":1.5}, {"x":14, "y":1.5}, {"label":"PgUp", "x":15.5, "y":1.5}, {"label":"Num Lock", "x":17, "y":1.5}, {"label":"/", "x":18, "y":1.5}, {"label":"*", "x":19, "y":1.5}, {"label":"-", "x":20, "y":1.5}, {"label":"Tab", "x":0, "y":2.5, "w":1.5}, {"label":"Q", "x":1.5, "y":2.5}, {"label":"W", "x":2.5, "y":2.5}, {"label":"E", "x":3.5, "y":2.5}, {"label":"R", "x":4.5, "y":2.5}, {"label":"T", "x":5.5, "y":2.5}, {"label":"Y", "x":6.5, "y":2.5}, {"label":"U", "x":7.5, "y":2.5}, {"label":"I", "x":8.5, "y":2.5}, {"label":"O", "x":9.5, "y":2.5}, {"label":"P", "x":10.5, "y":2.5}, {"label":"{", "x":11.5, "y":2.5}, {"label":"}", "x":12.5, "y":2.5}, {"label":"|", "x":13.5, "y":2.5, "w":1.5}, {"label":"PgDn", "x":15.5, "y":2.5}, {"label":"7", "x":17, "y":2.5}, {"label":"8", "x":18, "y":2.5}, {"label":"9", "x":19, "y":2.5}, {"label":"+", "x":20, "y":2.5}, {"label":"Caps Lock", "x":0, "y":3.5, "w":1.75}, {"label":"A", "x":1.75, "y":3.5}, {"label":"S", "x":2.75, "y":3.5}, {"label":"D", "x":3.75, "y":3.5}, {"label":"F", "x":4.75, "y":3.5}, {"label":"G", "x":5.75, "y":3.5}, {"label":"H", "x":6.75, "y":3.5}, {"label":"J", "x":7.75, "y":3.5}, {"label":"K", "x":8.75, "y":3.5}, {"label":"L", "x":9.75, "y":3.5}, {"label":":", "x":10.75, "y":3.5}, {"label":"\"", "x":11.75, "y":3.5}, {"label":"Enter", "x":12.75, "y":3.5, "w":2.25}, {"label":"4", "x":17, "y":3.5}, {"label":"5", "x":18, "y":3.5}, {"label":"6", "x":19, "y":3.5}, {"x":20, "y":3.5}, {"label":"Shift", "x":0, "y":4.5, "w":2.25}, {"label":"Z", "x":2.25, "y":4.5}, {"label":"X", "x":3.25, "y":4.5}, {"label":"C", "x":4.25, "y":4.5}, {"label":"V", "x":5.25, "y":4.5}, {"label":"B", "x":6.25, "y":4.5}, {"label":"N", "x":7.25, "y":4.5}, {"label":"M", "x":8.25, "y":4.5}, {"label":"<", "x":9.25, "y":4.5}, {"label":">", "x":10.25, "y":4.5}, {"label":"?", "x":11.25, "y":4.5}, {"label":"Shift", "x":12.25, "y":4.5, "w":1.75}, {"x":14, "y":4.5}, {"label":"\u2191", "x":15.5, "y":4.75}, {"label":"1", "x":17, "y":4.5}, {"label":"2", "x":18, "y":4.5}, {"label":"3", "x":19, "y":4.5}, {"label":"Enter", "x":20, "y":4.5}, {"label":"Ctrl", "x":0, "y":5.5, "w":1.25}, {"label":"Win", "x":1.25, "y":5.5, "w":1.25}, {"label":"Alt", "x":2.5, "y":5.5, "w":1.25}, {"x":3.75, "y":5.5, "w":6.25}, {"label":"Alt", "x":10, "y":5.5, "w":1.25}, {"label":"Menu", "x":11.25, "y":5.5, "w":1.25}, {"label":"Ctrl", "x":12.5, "y":5.5, "w":1.25}, {"label":"\u2190", "x":14.5, "y":5.75}, {"label":"\u2193", "x":15.5, "y":5.75}, {"label":"\u2192", "x":16.5, "y":5.75}, {"label":"0", "x":18, "y":5.5}, {"label":".", "x":19, "y":5.5}, {"x":20, "y":5.5}]
+ }
+ }
+}
\ No newline at end of file
diff --git a/keyboards/tkc/california/keymaps/default/keymap.c b/keyboards/tkc/california/keymaps/default/keymap.c
new file mode 100644
index 00000000000..747ed11e000
--- /dev/null
+++ b/keyboards/tkc/california/keymaps/default/keymap.c
@@ -0,0 +1,29 @@
+/*
+Copyright 2021 Terry Mathews
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [0] = LAYOUT_all( /* Base */
+
+ KC_ESC,KC_F1,KC_F2,KC_F3,KC_F4,KC_F5,KC_F6,KC_F7,KC_F8,KC_F9,KC_F10,KC_F11,KC_F12,KC_PSCR,KC_HOME,KC_END,KC_SLCK,KC_PAUS,
+ KC_GRV,KC_1,KC_2,KC_3,KC_4,KC_5,KC_6,KC_7,KC_8,KC_9,KC_0,KC_MINS,KC_EQL,KC_DEL,KC_BSPC,KC_PGUP,KC_NLCK,KC_PSLS,KC_PAST,KC_PMNS,
+ KC_TAB,KC_Q,KC_W,KC_E,KC_R,KC_T,KC_Y,KC_U,KC_I,KC_O,KC_P,KC_LBRC,KC_RBRC,KC_BSLS,KC_PGDN,KC_P7,KC_P8,KC_P9,KC_PMNS,
+ KC_CAPS,KC_A,KC_S,KC_D,KC_F,KC_G,KC_H,KC_J,KC_K,KC_L, KC_SCLN, KC_QUOT, KC_ENT,KC_P4, KC_P5, KC_P6,KC_PPLS,
+ KC_LSFT,KC_Z,KC_X,KC_C,KC_V,KC_B,KC_N,KC_M,KC_COMM,KC_DOT,KC_SLSH,KC_RSFT,KC_NO,KC_UP, KC_P1, KC_P2, KC_P3, KC_PENT,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT,KC_MENU, KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT, KC_P0, KC_PDOT, KC_PENT),
+};
diff --git a/keyboards/tkc/california/keymaps/via/keymap.c b/keyboards/tkc/california/keymaps/via/keymap.c
new file mode 100644
index 00000000000..b84fdd4a2e0
--- /dev/null
+++ b/keyboards/tkc/california/keymaps/via/keymap.c
@@ -0,0 +1,38 @@
+/*
+Copyright 2021 Terry Mathews
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [0] = LAYOUT_all( /* Base */
+
+ KC_ESC,KC_F1,KC_F2,KC_F3,KC_F4,KC_F5,KC_F6,KC_F7,KC_F8,KC_F9,KC_F10,KC_F11,KC_F12,KC_PSCR,KC_HOME,KC_END,KC_SLCK,KC_PAUS,
+ KC_GRV,KC_1,KC_2,KC_3,KC_4,KC_5,KC_6,KC_7,KC_8,KC_9,KC_0,KC_MINS,KC_EQL,KC_DEL,KC_BSPC,KC_PGUP,KC_NLCK,KC_PSLS,KC_PAST,KC_PMNS,
+ KC_TAB,KC_Q,KC_W,KC_E,KC_R,KC_T,KC_Y,KC_U,KC_I,KC_O,KC_P,KC_LBRC,KC_RBRC,KC_BSLS,KC_PGDN,KC_P7,KC_P8,KC_P9,KC_PMNS,
+ KC_CAPS,KC_A,KC_S,KC_D,KC_F,KC_G,KC_H,KC_J,KC_K,KC_L, KC_SCLN, KC_QUOT, KC_ENT,KC_P4, KC_P5, KC_P6,KC_PPLS,
+ KC_LSFT,KC_Z,KC_X,KC_C,KC_V,KC_B,KC_N,KC_M,KC_COMM,KC_DOT,KC_SLSH,KC_RSFT,MO(1),KC_UP, KC_P1, KC_P2, KC_P3, KC_PENT,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT,KC_MENU, KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT, KC_P0, KC_PDOT, KC_PENT),
+
+ [1] = LAYOUT_all( /* Function */
+
+ _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
+ _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
+ _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
+ _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
+ _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,MO(1),_______,_______,_______,_______,_______,
+ _______,_______,_______, _______, _______,_______, _______,_______,_______,_______,_______,_______,_______),
+};
diff --git a/keyboards/tkc/california/keymaps/via/rules.mk b/keyboards/tkc/california/keymaps/via/rules.mk
new file mode 100644
index 00000000000..36b7ba9cbc9
--- /dev/null
+++ b/keyboards/tkc/california/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
diff --git a/keyboards/tkc/california/readme.md b/keyboards/tkc/california/readme.md
new file mode 100644
index 00000000000..d8717ee6ea7
--- /dev/null
+++ b/keyboards/tkc/california/readme.md
@@ -0,0 +1,21 @@
+# TKC California
+
+![TKC California](https://i.imgur.com/IaG5Gvph.jpg)
+
+A compact 1800 keyboard.
+
+* Keyboard Maintainer: [TerryMathews](https://github.com/TerryMathews)
+* Hardware Supported: TKC California (ATmega32U4)
+* Hardware Availability: TBA
+
+Reset board into bootloader by holding down Esc key while plugging in USB-C cable.
+
+Make example for this keyboard (after setting up your build environment):
+
+ make tkc/california:default
+
+Flashing example for this keyboard:
+
+ make tkc/california:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/tkc/california/rules.mk b/keyboards/tkc/california/rules.mk
new file mode 100644
index 00000000000..1c4073c9cee
--- /dev/null
+++ b/keyboards/tkc/california/rules.mk
@@ -0,0 +1,18 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = no # Console for debug
+COMMAND_ENABLE = no # Commands for debug and configuration
+NKRO_ENABLE = yes # Enable N-Key Rollover
+BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no # Enable keyboard RGB underglow
+AUDIO_ENABLE = no # Audio output