diff --git a/api-v3/src/asset-master/dto/inventory-family-admin.dto.ts b/api-v3/src/asset-master/dto/inventory-family-admin.dto.ts
new file mode 100644
index 0000000..a6227d2
--- /dev/null
+++ b/api-v3/src/asset-master/dto/inventory-family-admin.dto.ts
@@ -0,0 +1,71 @@
+import { Transform } from 'class-transformer';
+import {
+  ArrayMaxSize,
+  IsArray,
+  IsBoolean,
+  IsIn,
+  IsOptional,
+  IsString,
+  IsUUID,
+  MaxLength,
+  MinLength,
+} from 'class-validator';
+
+export class CreateInventoryFamilyDto {
+  @IsIn(['INSTALLATION', 'SUBINSTALLATION'])
+  level!: 'INSTALLATION' | 'SUBINSTALLATION';
+
+  @Transform(({ value }) => typeof value === 'string' ? value.trim() : value)
+  @IsString()
+  @MinLength(1)
+  @MaxLength(240)
+  name!: string;
+
+  @IsOptional()
+  @IsUUID('4')
+  parentFamilyId?: string | null;
+
+  @IsOptional()
+  @IsArray()
+  @ArrayMaxSize(100)
+  @IsString({ each: true })
+  @MaxLength(160, { each: true })
+  informationLabels?: string[];
+}
+
+export class UpdateInventoryFamilyDto {
+  @IsOptional()
+  @Transform(({ value }) => typeof value === 'string' ? value.trim() : value)
+  @IsString()
+  @MinLength(1)
+  @MaxLength(240)
+  name?: string;
+
+  @IsOptional()
+  @IsUUID('4')
+  parentFamilyId?: string | null;
+
+  @IsOptional()
+  @IsArray()
+  @ArrayMaxSize(100)
+  @IsString({ each: true })
+  @MaxLength(160, { each: true })
+  informationLabels?: string[];
+
+  @IsOptional()
+  @IsBoolean()
+  isActive?: boolean;
+}
+
+export class ReplaceInventoryFamilyFindingsDto {
+  @IsArray()
+  @ArrayMaxSize(2000)
+  @IsUUID('4', { each: true })
+  itemIds!: string[];
+
+  @Transform(({ value }) => typeof value === 'string' ? value.trim() : value)
+  @IsString()
+  @MinLength(5)
+  @MaxLength(2000)
+  reason!: string;
+}