diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4c69019..39c2a74 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -79,6 +79,9 @@ jobs:
       - name: GA-export intake, entity naming, climate setpoint shift
         run: python tests/test_ga_export.py
 
+      - name: Regressions from a real 1312-GA house (subDPT false positives, HA lights, self-reporting status)
+        run: python tests/test_real_house_fixes.py
+
       - name: Repair proposals and council-review fixes
         run: python tests/test_council_fixes.py
 
diff --git a/nickol_knx_mcp/analyze.py b/nickol_knx_mcp/analyze.py
index 9879c55..576ee5f 100644
--- a/nickol_knx_mcp/analyze.py
+++ b/nickol_knx_mcp/analyze.py
@@ -211,6 +211,9 @@ def _is_safety_input(ga: GARecord) -> bool:
 # (tokens, main, sub, strong) — strong => also flag a wrong main.
 # --------------------------------------------------------------------------- #
 _SUBDPT_RULES: tuple = (
+    # power factor before power: "Фактор мощности" contains "мощност" but is 14.057
+    (("фактор мощност", "коэффициент мощност", "power factor", "leistungsfaktor", "cos φ", "cos phi"),
+     14, 57, True),
     (("влажност", "humidity", "feucht"), 9, 7, True),
     (("co2", "со2", "углекисл", "kohlendioxid"), 9, 8, True),
     (("освещённост", "освещенност", "luminosity", "lux", "helligkeit ("), 9, 4, True),
@@ -222,6 +225,24 @@ _SUBDPT_RULES: tuple = (
 )
 
 
+# Other DPTs that legitimately carry the same quantity, so they are not "wrong".
+# Checked against xknx 3.20 (DPTPower2Byte 9.024 kW, DPTApparentPower 14.080,
+# DPTActiveEnergy 13.010 … DPTActiveEnergyMWh 13.016, DPTEnergy 14.031 J).
+# Energy names in Russian ("электроэнергия - текущее потребление, W") are routinely
+# used for power readings, so power DPTs are accepted under energy names too.
+_SUBDPT_ALTERNATIVES: dict[tuple[int, int], frozenset] = {
+    (14, 56): frozenset({(9, 24), (14, 80)}),
+    (13, 13): frozenset({(13, 10), (13, 11), (13, 12), (13, 14), (13, 15), (13, 16),
+                         (14, 31), (14, 56), (9, 24)}),
+}
+
+# A quantity word in the name of a 1-bit, date/time or text GA names what the flag,
+# threshold trigger or timestamp is ABOUT ("вкл по освещённости", "порог CO2",
+# "запись значения, дата"), not the value itself. On seven real projects every such
+# hit was a false positive (12 of 12 on 1-bit), so these mains are not checked.
+_SUBDPT_EXEMPT_MAINS = frozenset({1, 10, 11, 16, 19})
+
+
 def _expected_subdpt(name: str) -> Optional[tuple[int, int, bool]]:
     low = (name or "").lower()
     for tokens, m, s, strong in _SUBDPT_RULES:
@@ -469,10 +490,14 @@ def detect_dpt_issues(project: LoadedProject) -> list[dict[str, Any]]:
     for addr, ga in project.gas.items():
         if ga.intent != INTENT_FUNCTIONAL or ga.dpt_main is None:
             continue
+        if ga.dpt_main in _SUBDPT_EXEMPT_MAINS:
+            continue
         exp = _expected_subdpt(ga.name)
         if exp is None:
             continue
         em, es, strong = exp
+        if (ga.dpt_main, ga.dpt_sub) in _SUBDPT_ALTERNATIVES.get((em, es), frozenset()):
+            continue
         if ga.dpt_main == em and ga.dpt_sub != es:
             findings.append(_finding(
                 SEVERITY_WARN, "subdpt_suspect", addr,
diff --git a/tests/test_real_house_fixes.py b/tests/test_real_house_fixes.py
new file mode 100644
index 0000000..598a6de
--- /dev/null
+++ b/tests/test_real_house_fixes.py
@@ -0,0 +1,61 @@
+"""Regressions found on a real 1312-GA Zennio house (ETS 5.7), anonymised.
+
+A. subdpt_suspect false positives
+   - a 1-bit flag named after a quantity ("on by motion detector by illuminance",
+     "CO2 threshold 1") is a flag, not the value -> never checked;
+   - date/time and text GAs are never checked ("meter value recorded, date");
+   - legitimate DPTs for the same quantity are not "wrong": power 9.024 kW,
+     power factor 14.057, reactive energy 13.015, power 14.056 under an
+     "electricity" name. (Checked against xknx 3.20.)
+   - real findings survive: a bare DPT 9 named "lux threshold", a 5.x named
+     "temperature control".
+"""
+import os
+import sys
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+from nickol_knx_mcp.project import build_loaded_from_raw
+from nickol_knx_mcp.analyze import detect_dpt_issues
+
+
+def _ga(addr, name, main, sub):
+    return {"name": name, "identifier": f"GA-{addr}", "raw_address": 0, "address": addr,
+            "project_uid": None, "dpt": {"main": main, "sub": sub} if main else None,
+            "data_secure": False, "communication_object_ids": [], "description": "", "comment": ""}
+
+
+def _project(rows):
+    return build_loaded_from_raw({"group_addresses": {a: _ga(a, n, m, s) for a, n, m, s in rows},
+                                  "info": {"group_address_style": "ThreeLevel"}}, "mem")
+
+
+# ---------------------------------------------------------------- A. subdpt_suspect
+false_positives = [
+    ("1/7/63", "1.04 - Winter garden - on by motion by освещенности", 1, 6),
+    ("1/7/70", "1.01 - Vestibule вкл по ДД по освещенности", 1, 2),
+    ("6/0/3", "Опорный сигнал освещенности для дневного откл ДД", 1, 1),
+    ("2/5/1", "02. Living - порог CO2 1", 1, 1),
+    ("5/2/1", "Электроэнергия - запись значения, дата", 11, 1),
+    ("5/2/8", "3 Фазы - Активная мощность, кВт", 9, 24),
+    ("5/2/9", "Boiler produced мощность", 9, 24),
+    ("5/2/10", "3 Фазы - Фактор мощности", 14, 57),
+    ("5/2/13", "3 Фазы - Индуктивная реактивная энергия", 13, 15),
+    ("5/2/20", "Электроэнергия - Текущее потребление, W", 14, 56),
+    ("5/2/21", "Meter energy MWh", 13, 16),
+]
+real_findings = [
+    ("1/5/1", "01. Corridor PDK1.1 - порог освещенности, люкс", 9, None),
+    ("3/1/1", "ПВУ 1 - Контроль температуры", 5, None),
+    ("5/2/30", "Phase power L1", 5, 1),
+    ("5/2/31", "Room temperature", 9, 2),
+]
+p = _project(false_positives + real_findings)
+flagged = {f["address"] for f in detect_dpt_issues(p) if f["code"] == "subdpt_suspect"}
+wrong = [a for a, *_ in false_positives if a in flagged]
+assert not wrong, f"false positives still flagged: {wrong}"
+missed = [a for a, *_ in real_findings if a not in flagged]
+assert not missed, f"real findings no longer flagged: {missed}"
+print(f"OK: A — {len(false_positives)} false positives silent, {len(real_findings)} real findings still flagged")
+
+print("\nALL REAL-HOUSE REGRESSION TESTS PASSED")
diff --git a/tools/corpus_baseline.json b/tools/corpus_baseline.json
index 07d9436..122e875 100644
--- a/tools/corpus_baseline.json
+++ b/tools/corpus_baseline.json
@@ -246,12 +246,12 @@
         "reserve_without_dpt": 23,
         "safety_input_no_status": 22,
         "status_pairing_summary": 1,
-        "subdpt_suspect": 7
+        "subdpt_suspect": 2
       },
       "findings_by_severity": {
         "error": 6,
         "info": 49,
-        "warning": 45
+        "warning": 40
       },
       "group_addresses": 685,
       "ha_entities": {
@@ -311,12 +311,12 @@
         "reserve_without_dpt": 25,
         "safety_input_no_status": 32,
         "status_pairing_summary": 1,
-        "subdpt_suspect": 17
+        "subdpt_suspect": 2
       },
       "findings_by_severity": {
         "error": 9,
         "info": 60,
-        "warning": 85
+        "warning": 70
       },
       "group_addresses": 1312,
       "ha_entities": {
@@ -377,13 +377,12 @@
         "safety_input_no_status": 47,
         "scene_no_status": 2,
         "status_pairing_summary": 1,
-        "subdpt_suspect": 1,
         "topology_segment_limit": 1
       },
       "findings_by_severity": {
         "error": 32,
         "info": 250,
-        "warning": 124
+        "warning": 123
       },
       "group_addresses": 3646,
       "ha_entities": {