Core question
Which items were missing from the first quote?
Answer first
Start with the full cost, key benefit and boundary before deciding.
Look for omissions, material changes, site conditions and change orders.
Primary cost
Add-ons and delays
Primary benefit
Low initial quote
Risk level
Medium
Evidence note
A
Supported by laws, standards, official statistics or authoritative guidance.
Sources, jurisdiction and timeliness
- 中华人民共和国民法典（国家法律法规数据库） 中国官方 · 全国人民代表大会 · 中国 · 2020-05-28 · 2026-09-29
- 中华人民共和国消费者权益保护法（国家法律法规数据库） 中国官方 · 全国人大常委会 · 中国 · 2013-10-25 · 2026-09-29
- Jurisdiction
- 中国
- Effective date
- Not registered
- Last reviewed
- 2026-09-29
Registered limitations
- Civil Code contract rules and consumer-protection law support checks on changes, price terms and disclosure; whether a renovation charge is reasonable still depends on the quote, drawings and signed change orders.
- Site conditions, material changes and quantity disputes normally require written records and professional assessment.
Next action
Do these first, then decide.
Check the registered statutes, jurisdiction and limitations below, then follow the action checklist.
- Check the registered statutes, jurisdiction and limitations below, then follow the action checklist.
- Source jurisdiction: China
- Civil Code contract rules and consumer-protection law support checks on changes, price terms and disclosure; whether a renovation charge is reasonable still depends on the quote, drawings and signed change orders.
This decision card provides general decision information and is not legal, medical, financial, tax or other professional advice.