diff --git a/ihp-sg13g2/libs.tech/klayout/tech/drc/sg13g2_maximal.lydrc b/ihp-sg13g2/libs.tech/klayout/tech/drc/sg13g2_maximal.lydrc
index 435f9147..908a2b2a 100644
--- a/ihp-sg13g2/libs.tech/klayout/tech/drc/sg13g2_maximal.lydrc
+++ b/ihp-sg13g2/libs.tech/klayout/tech/drc/sg13g2_maximal.lydrc
@@ -1472,6 +1472,7 @@ PAct_connect = Act_connect.ext_not(NAct)
 NActLV = NAct.ext_not(ThickGateOx)
 NAct_NWell = NAct.ext_and(X1)
 sal_nActiv = NAct.ext_not(SalBlock)
+Cont_NAct = Cont.ext_and(NAct)
 ContBar_NAct = ContBar.ext_and(NAct)
 Cont_not_outside_NAct = Cont.not_outside(NAct)
 nBuLayGen_nBuLay_NBL_a = nBuLayGen_nBuLay.ext_fast_width(1.0.um)
@@ -1494,6 +1495,7 @@ TopMetal1_slit_MIM_Slt_g_TM1_sep_tmp9 = TopMetal1_slit_MIM_Slt_g_TM1_sep_tmp6.du
 Rsil = Rsil_all_not_interact_NWell.ext_interacting(nBuLay, inverted: true)
 PGate = Gate.outside(NGate)
 PAct_NWell = PAct.ext_and(X1)
+Cont_PAct = Cont.ext_and(PAct)
 ContBar_PAct = ContBar.ext_and(PAct)
 Cont_not_outside_PAct = Cont.not_outside(PAct)
 NActHV = NAct.ext_not(NActLV)
@@ -1893,6 +1895,15 @@ end.().output("Cnt.b", "Min. Cont space = 0.18")
     badViaLine = viaInLargeArray_error.ext_not(viaInLargeArray)
     badViaLine.ext_rectangles(inverted: true)
 end.().output("Cnt.b1", "Min. Cont space in a contact array of more than 4 rows and more then 4 columns (Note 1) = 0.20")
+-> do
+    Cont_outside_EdgeSeal.ext_fast_enclosed(Act_Not_EdgeSeal, 0.07.um, polygon_output: true)
+end.().output("Cnt.c", "Min. Activ enclosure of Cont = 0.07")
+-> do
+    pSD.ext_fast_separation(Cont_NAct, 0.09.um, max_angle: 0, include_max_angle: true, polygon_output: true)
+end.().output("Cnt.g1", "Min. pSD space to Cont on nSD-Activ = 0.09")
+-> do
+    Cont_PAct.ext_fast_enclosed(pSD, 0.09.um, polygon_output: true)
+end.().output("Cnt.g2", "Min. pSD overlap of Cont on pSD-Activ = 0.09")
 -> do
     Cont_Act.ext_not(SVaricap).ext_fast_separation(GP_Nsram, 0.11.um)
 end.().output("Cnt.f", "Min. Cont on Activ space to GatPoly = 0.11")
diff --git a/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/sg13g2_test_Cont.gds.gz b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/sg13g2_test_Cont.gds.gz
new file mode 100644
index 00000000..998668fb
Binary files /dev/null and b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/sg13g2_test_Cont.gds.gz differ
diff --git a/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/test_Cont.py b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/test_Cont.py
new file mode 100644
index 00000000..14220be7
--- /dev/null
+++ b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/Cont/test_Cont.py
@@ -0,0 +1,44 @@
+"""Module to test specific layout rules."""
+# pylint: disable=invalid-name, missing-function-docstring,redefined-outer-name
+import pytest
+
+
+@pytest.fixture(scope="module")
+def drc_test_name():
+    return "Cont"
+
+
+@pytest.fixture(scope="module")
+def drc_test_flags():
+    return {'density': False}
+
+
+testdata = [
+    ("Cnt.a", 2),
+    ("Cnt.b", 1),
+    ("Cnt.c", 2),
+    ("Cnt.g1", 0),  # should be 1 but rule doesn't work
+    ("Cnt.g2", 1),
+    ("Cnt.f", 1),
+    ("Cnt.g", 1),
+    ("Cnt.h", 1),
+    ("Cnt.j", 1),
+    ("M1.c", 1),
+    ("M1.c1", 1),
+]
+
+@pytest.fixture(scope="module")
+def get_valid_tests():
+    return [t for t, _ in testdata]
+
+
+@pytest.mark.parametrize("rule,value", testdata)
+def test_rule_Cnt(rule, value, sg13g2_drc_maximal):
+    print(f"Test Rule {rule}")
+    assert sg13g2_drc_maximal[rule] == value
+
+def test_invalid_issues_Cnt(sg13g2_drc_maximal_failed_tests, get_valid_tests):
+    print(get_valid_tests)
+    print(sg13g2_drc_maximal_failed_tests)
+    invalid_issues = set(sg13g2_drc_maximal_failed_tests) - set(get_valid_tests)
+    assert len(invalid_issues) == 0
diff --git a/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/conftest.py b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/conftest.py
new file mode 100644
index 00000000..6ac3c0d6
--- /dev/null
+++ b/ihp-sg13g2/libs.tech/klayout/tech/drc/tests/conftest.py
@@ -0,0 +1,31 @@
+"""Module with common fixtures."""
+# pylint: disable=redefined-outer-name
+import pathlib
+import re
+import subprocess
+from typing import cast
+import pytest
+
+RULE_REGEX = r"Rule (?P<rule>(\w|\.)+): (?P<issues>\d+) error\(s\)"
+
+@pytest.fixture(scope="module")
+def sg13g2_drc_maximal(drc_test_name, drc_test_flags):
+    """Returns a dict of rule name and number of violations."""
+    cur_dir = pathlib.Path().resolve() / "ihp-sg13g2/libs.tech/klayout/tech/"
+    cmd = f"klayout -n sg13g2 -b -r {cur_dir}/drc/sg13g2_maximal.lydrc " \
+          f"-rd cell=sg13g2_test_{drc_test_name} " \
+          f"{cur_dir}/drc/tests/{drc_test_name}/sg13g2_test_{drc_test_name}.gds.gz"
+    if not drc_test_flags.get('density', True):
+        cmd += " -rd density=false"
+    result = subprocess.run(cmd, shell=True, capture_output=True, check=True)
+
+    pattern = re.compile(RULE_REGEX)
+    matches = (pattern.match(r) for r in result.stdout.decode('utf-8').split('\n'))
+    matches_ = (cast(re.Match, x) for x in matches if x is not None)
+    return {x.groupdict()['rule']: int(x.groupdict()['issues']) for x in matches_}
+
+
+@pytest.fixture(scope="module")
+def sg13g2_drc_maximal_failed_tests(sg13g2_drc_maximal):
+    """Returns a list of all failed checks."""
+    return [k for k,v in sg13g2_drc_maximal.items() if v > 0]
diff --git a/requirements-test.txt b/requirements-test.txt
new file mode 100644
index 00000000..2ebd49b9
--- /dev/null
+++ b/requirements-test.txt
@@ -0,0 +1,4 @@
+iniconfig==2.0.0
+packaging==24.2
+pluggy==1.5.0
+pytest==8.3.3
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 00000000..f2673344
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,19 @@
+[tox]
+envlist = py312-test
+minversion = v4.0
+
+[testenv:{py39,py310,py311,py312}-test]
+basepython =
+  py39: python3.9
+  py310: python3.10
+  py311: python3.11
+  py312: python3.12
+setenv =
+  py39: PREFIX = py39-
+  py310: PREFIX = py310-
+  py311: PREFIX = py311-
+  py312: PREFIX = py312-
+deps =
+  test: -rrequirements-test.txt
+commands =
+  test: pytest ihp-sg13g2/libs.tech/klayout/tech/drc/tests