diff --git a/realestate-lab/app/models.py b/realestate-lab/app/models.py
new file mode 100644
index 0000000..686ac00
--- /dev/null
+++ b/realestate-lab/app/models.py
@@ -0,0 +1,82 @@
+from typing import Optional, List
+from pydantic import BaseModel
+
+
+class AnnouncementCreate(BaseModel):
+    house_nm: str
+    house_secd: str = "01"
+    house_dtl_secd: Optional[str] = None
+    rent_secd: Optional[str] = None
+    region_code: Optional[str] = None
+    region_name: Optional[str] = None
+    address: Optional[str] = None
+    total_units: Optional[int] = None
+    rcrit_date: Optional[str] = None
+    receipt_start: Optional[str] = None
+    receipt_end: Optional[str] = None
+    spsply_start: Optional[str] = None
+    spsply_end: Optional[str] = None
+    gnrl_rank1_start: Optional[str] = None
+    gnrl_rank1_end: Optional[str] = None
+    winner_date: Optional[str] = None
+    contract_start: Optional[str] = None
+    contract_end: Optional[str] = None
+    homepage_url: Optional[str] = None
+    pblanc_url: Optional[str] = None
+    constructor: Optional[str] = None
+    developer: Optional[str] = None
+    move_in_month: Optional[str] = None
+    is_speculative_area: Optional[str] = None
+    is_price_cap: Optional[str] = None
+    contact: Optional[str] = None
+
+
+class AnnouncementUpdate(BaseModel):
+    house_nm: Optional[str] = None
+    house_secd: Optional[str] = None
+    house_dtl_secd: Optional[str] = None
+    rent_secd: Optional[str] = None
+    region_code: Optional[str] = None
+    region_name: Optional[str] = None
+    address: Optional[str] = None
+    total_units: Optional[int] = None
+    rcrit_date: Optional[str] = None
+    receipt_start: Optional[str] = None
+    receipt_end: Optional[str] = None
+    spsply_start: Optional[str] = None
+    spsply_end: Optional[str] = None
+    gnrl_rank1_start: Optional[str] = None
+    gnrl_rank1_end: Optional[str] = None
+    winner_date: Optional[str] = None
+    contract_start: Optional[str] = None
+    contract_end: Optional[str] = None
+    homepage_url: Optional[str] = None
+    pblanc_url: Optional[str] = None
+    constructor: Optional[str] = None
+    developer: Optional[str] = None
+    move_in_month: Optional[str] = None
+    is_speculative_area: Optional[str] = None
+    is_price_cap: Optional[str] = None
+    contact: Optional[str] = None
+
+
+class ProfileUpdate(BaseModel):
+    name: Optional[str] = None
+    age: Optional[int] = None
+    is_homeless: Optional[bool] = None
+    is_householder: Optional[bool] = None
+    subscription_months: Optional[int] = None
+    subscription_amount: Optional[int] = None
+    family_members: Optional[int] = None
+    has_dependents: Optional[bool] = None
+    children_count: Optional[int] = None
+    is_newlywed: Optional[bool] = None
+    marriage_months: Optional[int] = None
+    has_newborn: Optional[bool] = None
+    is_first_home: Optional[bool] = None
+    income_level: Optional[str] = None
+    preferred_regions: Optional[List[str]] = None
+    preferred_types: Optional[List[str]] = None
+    min_area: Optional[float] = None
+    max_area: Optional[float] = None
+    max_price: Optional[int] = None