diff --git a/src/app.module.ts b/src/app.module.ts
index 716af22..4776993 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -8,6 +8,9 @@ import { BusinessCategoriesModule } from './modules/business-categories/business
 import { BusinessesModule } from './modules/businesses/businesses.module';
 import { ServiceTemplatesModule } from './modules/service-templates/service-templates.module';
 import { BusinessServicesModule } from './modules/business-services/business-services.module';
+import { AttributeDefinitionsModule } from './modules/attribute-definitions/attribute-definitions.module';
+import { BusinessAttributeValuesModule } from './modules/business-attribute-values/business-attribute-values.module';
+import { BookingsModule } from './modules/bookings/bookings.module';
 
 @Module({
   imports: [
@@ -17,6 +20,9 @@ import { BusinessServicesModule } from './modules/business-services/business-ser
     BusinessesModule,
     ServiceTemplatesModule,
     BusinessServicesModule,
+    AttributeDefinitionsModule,
+    BusinessAttributeValuesModule,
+    BookingsModule,
   ],
   controllers: [AppController],
   providers: [AppService],
diff --git a/src/modules/attribute-definitions/attribute-definitions.controller.ts b/src/modules/attribute-definitions/attribute-definitions.controller.ts
new file mode 100644
index 0000000..1707cc6
--- /dev/null
+++ b/src/modules/attribute-definitions/attribute-definitions.controller.ts
@@ -0,0 +1,52 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Patch,
+  Post,
+  Query,
+} from '@nestjs/common';
+import { AttributeDefinitionEntity } from '../../entities/attribute-definition.entity';
+import { AttributeDefinitionsService } from './attribute-definitions.service';
+import { CreateAttributeDefinitionDto } from './dto/create-attribute-definition.dto';
+import { UpdateAttributeDefinitionDto } from './dto/update-attribute-definition.dto';
+
+@Controller('attribute-definitions')
+export class AttributeDefinitionsController {
+  constructor(private readonly service: AttributeDefinitionsService) {}
+
+  @Get()
+  findAll(
+    @Query('categoryId') categoryId?: string,
+  ): Promise<AttributeDefinitionEntity[]> {
+    return this.service.findAll(categoryId);
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string): Promise<AttributeDefinitionEntity> {
+    return this.service.findOne(id);
+  }
+
+  @Post()
+  create(
+    @Body() payload: CreateAttributeDefinitionDto,
+  ): Promise<AttributeDefinitionEntity> {
+    return this.service.create(payload);
+  }
+
+  @Patch(':id')
+  update(
+    @Param('id') id: string,
+    @Body() payload: UpdateAttributeDefinitionDto,
+  ): Promise<AttributeDefinitionEntity> {
+    return this.service.update(id, payload);
+  }
+
+  @Delete(':id')
+  async remove(@Param('id') id: string): Promise<{ success: true }> {
+    await this.service.remove(id);
+    return { success: true };
+  }
+}
diff --git a/src/modules/attribute-definitions/attribute-definitions.module.ts b/src/modules/attribute-definitions/attribute-definitions.module.ts
new file mode 100644
index 0000000..2d58e39
--- /dev/null
+++ b/src/modules/attribute-definitions/attribute-definitions.module.ts
@@ -0,0 +1,15 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { AttributeDefinitionEntity } from '../../entities/attribute-definition.entity';
+import { BusinessCategoryEntity } from '../../entities/business-category.entity';
+import { AttributeDefinitionsController } from './attribute-definitions.controller';
+import { AttributeDefinitionsService } from './attribute-definitions.service';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([AttributeDefinitionEntity, BusinessCategoryEntity]),
+  ],
+  controllers: [AttributeDefinitionsController],
+  providers: [AttributeDefinitionsService],
+})
+export class AttributeDefinitionsModule {}
diff --git a/src/modules/attribute-definitions/attribute-definitions.service.ts b/src/modules/attribute-definitions/attribute-definitions.service.ts
new file mode 100644
index 0000000..30e12fc
--- /dev/null
+++ b/src/modules/attribute-definitions/attribute-definitions.service.ts
@@ -0,0 +1,111 @@
+import {
+  ConflictException,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import {
+  AttributeDefinitionEntity,
+} from '../../entities/attribute-definition.entity';
+import { BusinessCategoryEntity } from '../../entities/business-category.entity';
+import { CreateAttributeDefinitionDto } from './dto/create-attribute-definition.dto';
+import { UpdateAttributeDefinitionDto } from './dto/update-attribute-definition.dto';
+
+@Injectable()
+export class AttributeDefinitionsService {
+  constructor(
+    @InjectRepository(AttributeDefinitionEntity)
+    private readonly repo: Repository<AttributeDefinitionEntity>,
+    @InjectRepository(BusinessCategoryEntity)
+    private readonly categoryRepo: Repository<BusinessCategoryEntity>,
+  ) {}
+
+  async findAll(categoryId?: string): Promise<AttributeDefinitionEntity[]> {
+    const qb = this.repo
+      .createQueryBuilder('def')
+      .leftJoinAndSelect('def.category', 'category')
+      .orderBy('def.createdAt', 'DESC');
+
+    if (categoryId) {
+      qb.andWhere('def.categoryId = :categoryId', { categoryId });
+    }
+
+    return qb.getMany();
+  }
+
+  async findOne(id: string): Promise<AttributeDefinitionEntity> {
+    const row = await this.repo.findOne({
+      where: { id },
+      relations: { category: true },
+    });
+    if (!row) {
+      throw new NotFoundException('Attribute definition not found');
+    }
+    return row;
+  }
+
+  async create(
+    dto: CreateAttributeDefinitionDto,
+  ): Promise<AttributeDefinitionEntity> {
+    await this.ensureCategoryExists(dto.categoryId);
+
+    const dup = await this.repo.findOne({
+      where: { categoryId: dto.categoryId, key: dto.key },
+    });
+    if (dup) {
+      throw new ConflictException('key already exists for this category');
+    }
+
+    const entity = this.repo.create({
+      title: dto.title,
+      key: dto.key,
+      type: dto.type,
+      categoryId: dto.categoryId,
+      options: dto.options ?? null,
+      required: dto.required ?? false,
+      isFilterable: dto.isFilterable ?? true,
+    });
+
+    return this.repo.save(entity);
+  }
+
+  async update(
+    id: string,
+    dto: UpdateAttributeDefinitionDto,
+  ): Promise<AttributeDefinitionEntity> {
+    const row = await this.findOne(id);
+
+    if (dto.categoryId && dto.categoryId !== row.categoryId) {
+      await this.ensureCategoryExists(dto.categoryId);
+    }
+
+    if (dto.key !== undefined || dto.categoryId !== undefined) {
+      const nextCategoryId = dto.categoryId ?? row.categoryId;
+      const nextKey = dto.key ?? row.key;
+      const dup = await this.repo.findOne({
+        where: { categoryId: nextCategoryId, key: nextKey },
+      });
+      if (dup && dup.id !== row.id) {
+        throw new ConflictException('key already exists for this category');
+      }
+    }
+
+    Object.assign(row, dto);
+    return this.repo.save(row);
+  }
+
+  async remove(id: string): Promise<void> {
+    const result = await this.repo.delete(id);
+    if (!result.affected) {
+      throw new NotFoundException('Attribute definition not found');
+    }
+  }
+
+  private async ensureCategoryExists(categoryId: string): Promise<void> {
+    const cat = await this.categoryRepo.findOne({ where: { id: categoryId } });
+    if (!cat) {
+      throw new NotFoundException('Business category not found');
+    }
+  }
+}
diff --git a/src/modules/attribute-definitions/dto/create-attribute-definition.dto.ts b/src/modules/attribute-definitions/dto/create-attribute-definition.dto.ts
new file mode 100644
index 0000000..6115c62
--- /dev/null
+++ b/src/modules/attribute-definitions/dto/create-attribute-definition.dto.ts
@@ -0,0 +1,13 @@
+import { AttributeType } from '../../../entities/attribute-definition.entity';
+
+export class CreateAttributeDefinitionDto {
+  title!: string;
+  /** یکتا در محدوده همان دسته شغلی */
+  key!: string;
+  type!: AttributeType;
+  categoryId!: string;
+  /** برای type=select آرایه گزینه‌ها */
+  options?: string[];
+  required?: boolean;
+  isFilterable?: boolean;
+}
diff --git a/src/modules/attribute-definitions/dto/update-attribute-definition.dto.ts b/src/modules/attribute-definitions/dto/update-attribute-definition.dto.ts
new file mode 100644
index 0000000..06d4cc6
--- /dev/null
+++ b/src/modules/attribute-definitions/dto/update-attribute-definition.dto.ts
@@ -0,0 +1,11 @@
+import { AttributeType } from '../../../entities/attribute-definition.entity';
+
+export class UpdateAttributeDefinitionDto {
+  title?: string;
+  key?: string;
+  type?: AttributeType;
+  categoryId?: string;
+  options?: string[] | null;
+  required?: boolean;
+  isFilterable?: boolean;
+}
diff --git a/src/modules/bookings/bookings.controller.ts b/src/modules/bookings/bookings.controller.ts
new file mode 100644
index 0000000..729f717
--- /dev/null
+++ b/src/modules/bookings/bookings.controller.ts
@@ -0,0 +1,52 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Patch,
+  Post,
+  Query,
+} from '@nestjs/common';
+import { BookingEntity, BookingStatus } from '../../entities/booking.entity';
+import { BookingsService } from './bookings.service';
+import { CreateBookingDto } from './dto/create-booking.dto';
+import { UpdateBookingDto } from './dto/update-booking.dto';
+
+@Controller('bookings')
+export class BookingsController {
+  constructor(private readonly service: BookingsService) {}
+
+  @Get()
+  findAll(
+    @Query('customerId') customerId?: string,
+    @Query('businessId') businessId?: string,
+    @Query('status') status?: BookingStatus,
+  ): Promise<BookingEntity[]> {
+    return this.service.findAll({ customerId, businessId, status });
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string): Promise<BookingEntity> {
+    return this.service.findOne(id);
+  }
+
+  @Post()
+  create(@Body() payload: CreateBookingDto): Promise<BookingEntity> {
+    return this.service.create(payload);
+  }
+
+  @Patch(':id')
+  update(
+    @Param('id') id: string,
+    @Body() payload: UpdateBookingDto,
+  ): Promise<BookingEntity> {
+    return this.service.update(id, payload);
+  }
+
+  @Delete(':id')
+  async remove(@Param('id') id: string): Promise<{ success: true }> {
+    await this.service.remove(id);
+    return { success: true };
+  }
+}
diff --git a/src/modules/bookings/bookings.module.ts b/src/modules/bookings/bookings.module.ts
new file mode 100644
index 0000000..37465f6
--- /dev/null
+++ b/src/modules/bookings/bookings.module.ts
@@ -0,0 +1,22 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { BookingEntity } from '../../entities/booking.entity';
+import { BusinessServiceEntity } from '../../entities/business-service.entity';
+import { BusinessEntity } from '../../entities/business.entity';
+import { UserEntity } from '../../entities/user.entity';
+import { BookingsController } from './bookings.controller';
+import { BookingsService } from './bookings.service';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([
+      BookingEntity,
+      UserEntity,
+      BusinessEntity,
+      BusinessServiceEntity,
+    ]),
+  ],
+  controllers: [BookingsController],
+  providers: [BookingsService],
+})
+export class BookingsModule {}
diff --git a/src/modules/bookings/bookings.service.ts b/src/modules/bookings/bookings.service.ts
new file mode 100644
index 0000000..7364f65
--- /dev/null
+++ b/src/modules/bookings/bookings.service.ts
@@ -0,0 +1,171 @@
+import {
+  BadRequestException,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { BookingEntity, BookingStatus } from '../../entities/booking.entity';
+import { BusinessServiceEntity } from '../../entities/business-service.entity';
+import { BusinessEntity } from '../../entities/business.entity';
+import { UserEntity } from '../../entities/user.entity';
+import { CreateBookingDto } from './dto/create-booking.dto';
+import { UpdateBookingDto } from './dto/update-booking.dto';
+
+type FindAllFilters = {
+  customerId?: string;
+  businessId?: string;
+  status?: BookingStatus;
+};
+
+@Injectable()
+export class BookingsService {
+  private readonly minLeadMinutes: number;
+
+  constructor(
+    private readonly config: ConfigService,
+    @InjectRepository(BookingEntity)
+    private readonly repo: Repository<BookingEntity>,
+    @InjectRepository(UserEntity)
+    private readonly userRepo: Repository<UserEntity>,
+    @InjectRepository(BusinessEntity)
+    private readonly businessRepo: Repository<BusinessEntity>,
+    @InjectRepository(BusinessServiceEntity)
+    private readonly businessServiceRepo: Repository<BusinessServiceEntity>,
+  ) {
+    const raw = this.config.get<string | undefined>('BOOKING_MIN_LEAD_MINUTES');
+    const parsed = raw !== undefined ? Number.parseInt(String(raw), 10) : NaN;
+    this.minLeadMinutes = Number.isFinite(parsed) && parsed >= 0 ? parsed : 60;
+  }
+
+  async findAll(filters: FindAllFilters): Promise<BookingEntity[]> {
+    const qb = this.repo
+      .createQueryBuilder('b')
+      .leftJoinAndSelect('b.customer', 'customer')
+      .leftJoinAndSelect('b.business', 'business')
+      .leftJoinAndSelect('b.businessService', 'businessService')
+      .leftJoinAndSelect('businessService.serviceTemplate', 'template')
+      .orderBy('b.scheduledAt', 'ASC');
+
+    if (filters.customerId) {
+      qb.andWhere('b.customerId = :customerId', {
+        customerId: filters.customerId,
+      });
+    }
+    if (filters.businessId) {
+      qb.andWhere('b.businessId = :businessId', {
+        businessId: filters.businessId,
+      });
+    }
+    if (filters.status) {
+      qb.andWhere('b.status = :status', { status: filters.status });
+    }
+
+    return qb.getMany();
+  }
+
+  async findOne(id: string): Promise<BookingEntity> {
+    const row = await this.repo.findOne({
+      where: { id },
+      relations: {
+        customer: true,
+        business: true,
+        businessService: { serviceTemplate: true },
+      },
+    });
+    if (!row) {
+      throw new NotFoundException('Booking not found');
+    }
+    return row;
+  }
+
+  async create(dto: CreateBookingDto): Promise<BookingEntity> {
+    const customer = await this.userRepo.findOne({
+      where: { id: dto.customerId },
+    });
+    if (!customer) {
+      throw new NotFoundException('User not found');
+    }
+
+    const business = await this.businessRepo.findOne({
+      where: { id: dto.businessId },
+    });
+    if (!business) {
+      throw new NotFoundException('Business not found');
+    }
+
+    const businessService = await this.businessServiceRepo.findOne({
+      where: { id: dto.businessServiceId },
+      relations: { business: true },
+    });
+    if (!businessService) {
+      throw new NotFoundException('Business service not found');
+    }
+
+    if (businessService.businessId !== dto.businessId) {
+      throw new BadRequestException(
+        'businessService does not belong to the given business',
+      );
+    }
+
+    const scheduledAt = this.parseScheduledAt(dto.scheduledAt);
+    this.assertLeadTime(scheduledAt);
+
+    const entity = this.repo.create({
+      customerId: dto.customerId,
+      businessId: dto.businessId,
+      businessServiceId: dto.businessServiceId,
+      scheduledAt,
+      note: dto.note ?? null,
+      status: BookingStatus.PENDING,
+    });
+
+    return this.repo.save(entity);
+  }
+
+  async update(id: string, dto: UpdateBookingDto): Promise<BookingEntity> {
+    const row = await this.findOne(id);
+
+    if (dto.scheduledAt !== undefined) {
+      const scheduledAt = this.parseScheduledAt(dto.scheduledAt);
+      this.assertLeadTime(scheduledAt);
+      row.scheduledAt = scheduledAt;
+    }
+
+    if (dto.status !== undefined) {
+      row.status = dto.status;
+    }
+
+    if (dto.note !== undefined) {
+      row.note = dto.note;
+    }
+
+    return this.repo.save(row);
+  }
+
+  async remove(id: string): Promise<void> {
+    const result = await this.repo.delete(id);
+    if (!result.affected) {
+      throw new NotFoundException('Booking not found');
+    }
+  }
+
+  private parseScheduledAt(raw: string): Date {
+    const d = new Date(raw);
+    if (Number.isNaN(d.getTime())) {
+      throw new BadRequestException('scheduledAt must be a valid ISO datetime');
+    }
+    return d;
+  }
+
+  private assertLeadTime(scheduledAt: Date): void {
+    const minMs = this.minLeadMinutes * 60 * 1000;
+    const earliest = Date.now() + minMs;
+    if (scheduledAt.getTime() < earliest) {
+      throw new BadRequestException(
+        `scheduledAt must be at least ${this.minLeadMinutes} minute(s) after the current time`,
+      );
+    }
+  }
+}
diff --git a/src/modules/bookings/dto/create-booking.dto.ts b/src/modules/bookings/dto/create-booking.dto.ts
new file mode 100644
index 0000000..992303c
--- /dev/null
+++ b/src/modules/bookings/dto/create-booking.dto.ts
@@ -0,0 +1,8 @@
+export class CreateBookingDto {
+  customerId!: string;
+  businessId!: string;
+  businessServiceId!: string;
+  /** ISO 8601 datetime string */
+  scheduledAt!: string;
+  note?: string | null;
+}
diff --git a/src/modules/bookings/dto/update-booking.dto.ts b/src/modules/bookings/dto/update-booking.dto.ts
new file mode 100644
index 0000000..965e62e
--- /dev/null
+++ b/src/modules/bookings/dto/update-booking.dto.ts
@@ -0,0 +1,7 @@
+import { BookingStatus } from '../../../entities/booking.entity';
+
+export class UpdateBookingDto {
+  scheduledAt?: string;
+  status?: BookingStatus;
+  note?: string | null;
+}
diff --git a/src/modules/business-attribute-values/business-attribute-values.controller.ts b/src/modules/business-attribute-values/business-attribute-values.controller.ts
new file mode 100644
index 0000000..3107ee1
--- /dev/null
+++ b/src/modules/business-attribute-values/business-attribute-values.controller.ts
@@ -0,0 +1,52 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Patch,
+  Post,
+  Query,
+} from '@nestjs/common';
+import { BusinessAttributeValueEntity } from '../../entities/business-attribute-value.entity';
+import { BusinessAttributeValuesService } from './business-attribute-values.service';
+import { CreateBusinessAttributeValueDto } from './dto/create-business-attribute-value.dto';
+import { UpdateBusinessAttributeValueDto } from './dto/update-business-attribute-value.dto';
+
+@Controller('business-attribute-values')
+export class BusinessAttributeValuesController {
+  constructor(private readonly service: BusinessAttributeValuesService) {}
+
+  @Get()
+  findAll(
+    @Query('businessId') businessId?: string,
+  ): Promise<BusinessAttributeValueEntity[]> {
+    return this.service.findAll(businessId);
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string): Promise<BusinessAttributeValueEntity> {
+    return this.service.findOne(id);
+  }
+
+  @Post()
+  create(
+    @Body() payload: CreateBusinessAttributeValueDto,
+  ): Promise<BusinessAttributeValueEntity> {
+    return this.service.create(payload);
+  }
+
+  @Patch(':id')
+  update(
+    @Param('id') id: string,
+    @Body() payload: UpdateBusinessAttributeValueDto,
+  ): Promise<BusinessAttributeValueEntity> {
+    return this.service.update(id, payload);
+  }
+
+  @Delete(':id')
+  async remove(@Param('id') id: string): Promise<{ success: true }> {
+    await this.service.remove(id);
+    return { success: true };
+  }
+}
diff --git a/src/modules/business-attribute-values/business-attribute-values.module.ts b/src/modules/business-attribute-values/business-attribute-values.module.ts
new file mode 100644
index 0000000..83fe0bf
--- /dev/null
+++ b/src/modules/business-attribute-values/business-attribute-values.module.ts
@@ -0,0 +1,20 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { AttributeDefinitionEntity } from '../../entities/attribute-definition.entity';
+import { BusinessAttributeValueEntity } from '../../entities/business-attribute-value.entity';
+import { BusinessEntity } from '../../entities/business.entity';
+import { BusinessAttributeValuesController } from './business-attribute-values.controller';
+import { BusinessAttributeValuesService } from './business-attribute-values.service';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([
+      BusinessAttributeValueEntity,
+      BusinessEntity,
+      AttributeDefinitionEntity,
+    ]),
+  ],
+  controllers: [BusinessAttributeValuesController],
+  providers: [BusinessAttributeValuesService],
+})
+export class BusinessAttributeValuesModule {}
diff --git a/src/modules/business-attribute-values/business-attribute-values.service.ts b/src/modules/business-attribute-values/business-attribute-values.service.ts
new file mode 100644
index 0000000..0564b3d
--- /dev/null
+++ b/src/modules/business-attribute-values/business-attribute-values.service.ts
@@ -0,0 +1,177 @@
+import {
+  BadRequestException,
+  ConflictException,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import {
+  AttributeDefinitionEntity,
+  AttributeType,
+} from '../../entities/attribute-definition.entity';
+import { BusinessAttributeValueEntity } from '../../entities/business-attribute-value.entity';
+import { BusinessEntity } from '../../entities/business.entity';
+import { CreateBusinessAttributeValueDto } from './dto/create-business-attribute-value.dto';
+import { UpdateBusinessAttributeValueDto } from './dto/update-business-attribute-value.dto';
+
+@Injectable()
+export class BusinessAttributeValuesService {
+  constructor(
+    @InjectRepository(BusinessAttributeValueEntity)
+    private readonly repo: Repository<BusinessAttributeValueEntity>,
+    @InjectRepository(BusinessEntity)
+    private readonly businessRepo: Repository<BusinessEntity>,
+    @InjectRepository(AttributeDefinitionEntity)
+    private readonly defRepo: Repository<AttributeDefinitionEntity>,
+  ) {}
+
+  async findAll(businessId?: string): Promise<BusinessAttributeValueEntity[]> {
+    const qb = this.repo
+      .createQueryBuilder('v')
+      .leftJoinAndSelect('v.business', 'business')
+      .leftJoinAndSelect('v.attributeDefinition', 'def')
+      .orderBy('v.createdAt', 'DESC');
+
+    if (businessId) {
+      qb.andWhere('v.businessId = :businessId', { businessId });
+    }
+
+    return qb.getMany();
+  }
+
+  async findOne(id: string): Promise<BusinessAttributeValueEntity> {
+    const row = await this.repo.findOne({
+      where: { id },
+      relations: { business: true, attributeDefinition: true },
+    });
+    if (!row) {
+      throw new NotFoundException('Business attribute value not found');
+    }
+    return row;
+  }
+
+  async create(
+    dto: CreateBusinessAttributeValueDto,
+  ): Promise<BusinessAttributeValueEntity> {
+    const business = await this.businessRepo.findOne({
+      where: { id: dto.businessId },
+    });
+    if (!business) {
+      throw new NotFoundException('Business not found');
+    }
+
+    const def = await this.defRepo.findOne({
+      where: { id: dto.attributeDefinitionId },
+    });
+    if (!def) {
+      throw new NotFoundException('Attribute definition not found');
+    }
+
+    if (def.categoryId !== business.categoryId) {
+      throw new BadRequestException(
+        'Attribute definition must belong to the same category as the business',
+      );
+    }
+
+    const dup = await this.repo.findOne({
+      where: {
+        businessId: dto.businessId,
+        attributeDefinitionId: dto.attributeDefinitionId,
+      },
+    });
+    if (dup) {
+      throw new ConflictException(
+        'This attribute is already set for this business; use PATCH instead',
+      );
+    }
+
+    const normalized = this.normalizeAndValidateValue(def, dto.value);
+
+    const entity = this.repo.create({
+      businessId: dto.businessId,
+      attributeDefinitionId: dto.attributeDefinitionId,
+      value: normalized,
+    });
+
+    return this.repo.save(entity);
+  }
+
+  async update(
+    id: string,
+    dto: UpdateBusinessAttributeValueDto,
+  ): Promise<BusinessAttributeValueEntity> {
+    const row = await this.findOne(id);
+
+    const def =
+      row.attributeDefinition ??
+      (await this.defRepo.findOne({
+        where: { id: row.attributeDefinitionId },
+      }));
+
+    if (!def) {
+      throw new NotFoundException('Attribute definition not found');
+    }
+
+    if (dto.value !== undefined) {
+      row.value = this.normalizeAndValidateValue(def, dto.value);
+    }
+
+    return this.repo.save(row);
+  }
+
+  async remove(id: string): Promise<void> {
+    const result = await this.repo.delete(id);
+    if (!result.affected) {
+      throw new NotFoundException('Business attribute value not found');
+    }
+  }
+
+  private normalizeAndValidateValue(
+    def: AttributeDefinitionEntity,
+    raw: string | null | undefined,
+  ): string | null {
+    const empty =
+      raw === undefined || raw === null || String(raw).trim() === '';
+
+    if (empty) {
+      if (def.required) {
+        throw new BadRequestException(`value required for attribute "${def.key}"`);
+      }
+      return null;
+    }
+
+    const s = String(raw).trim();
+
+    switch (def.type) {
+      case AttributeType.BOOLEAN: {
+        const low = s.toLowerCase();
+        if (!['true', 'false', '1', '0'].includes(low)) {
+          throw new BadRequestException(
+            `invalid boolean for "${def.key}" (use true/false)`,
+          );
+        }
+        return low === 'true' || low === '1' ? 'true' : 'false';
+      }
+      case AttributeType.NUMBER: {
+        const n = Number(s);
+        if (!Number.isFinite(n)) {
+          throw new BadRequestException(`invalid number for "${def.key}"`);
+        }
+        return String(n);
+      }
+      case AttributeType.SELECT: {
+        const opts = def.options ?? [];
+        if (!opts.includes(s)) {
+          throw new BadRequestException(
+            `value must be one of options for "${def.key}"`,
+          );
+        }
+        return s;
+      }
+      case AttributeType.TEXT:
+      default:
+        return s;
+    }
+  }
+}
diff --git a/src/modules/business-attribute-values/dto/create-business-attribute-value.dto.ts b/src/modules/business-attribute-values/dto/create-business-attribute-value.dto.ts
new file mode 100644
index 0000000..589fad4
--- /dev/null
+++ b/src/modules/business-attribute-values/dto/create-business-attribute-value.dto.ts
@@ -0,0 +1,6 @@
+export class CreateBusinessAttributeValueDto {
+  businessId!: string;
+  attributeDefinitionId!: string;
+  /** مقدار به صورت رشته ذخیره می‌شود؛ برای boolean مثلا true/false */
+  value?: string | null;
+}
diff --git a/src/modules/business-attribute-values/dto/update-business-attribute-value.dto.ts b/src/modules/business-attribute-values/dto/update-business-attribute-value.dto.ts
new file mode 100644
index 0000000..8c80d34
--- /dev/null
+++ b/src/modules/business-attribute-values/dto/update-business-attribute-value.dto.ts
@@ -0,0 +1,3 @@
+export class UpdateBusinessAttributeValueDto {
+  value?: string | null;
+}