🏗️ 什麼是 Builder’s Risk Insurance？自建 / 擴建一定要知道
當屋主開始自建 garage、加蓋房間，或進行大型擴建工程時，很多人會問：
「我已經有 homeowner insurance 了，為什麼還需要 Builder’s Risk Insurance？」
這是一個非常常見、也非常關鍵的問題。
什麼是 Builder’s Risk Insurance？
Builder’s Risk Insurance，又稱施工險或工程險，是一種專門用來保護「施工中建物」的保險。
它主要承保的是：
- 尚未完工的建物結構
- 施工中的材料與設備
- 在施工期間因意外造成的財產損失
簡單說一句話：
Homeowner insurance 是保「已完工的家」，Builder’s Risk 是保「還在蓋的家」。
什麼情況下需要 Builder’s Risk Insurance？
以下情況，通常都會建議評估 Builder’s Risk：
- 自建 garage 或新建獨立結構
- 加建（addition），例如加蓋房間、樓層
- 大型翻修，動到結構、電線或管線
- 施工期間超過數週或數月
尤其是屋主自己擔任 general contractor（Owner-Builder）時，風險與責任通常全部落在屋主身上。
Builder’s Risk 通常會保什麼？
常見承保範圍包括：
- 火災、爆炸
- 風災、暴雨等天候事故
- 建材被偷竊或破壞
- 施工中意外導致的結構損壞
但需要注意的是：
- 多數 Builder’s Risk 不包含工人受傷
- 工人需由承包商自備 Workers’ Compensation
那 Homeowner Insurance 在施工期間就完全沒用嗎？
不一定。
在某些小型工程中，保險公司可能會透過：
- endorsement（附加條款）
- 短期調整保額
來延伸現有 homeowner insurance 的保障。
但是否足夠，取決於工程規模與風險程度，這也是為什麼大型工程通常會建議搭配 Builder’s Risk。
Builder’s Risk 和 Certificate of Occupancy（CO）的關係
Builder’s Risk 通常只在「施工期間」有效，一旦：
- 工程完工
- 取得 Certificate of Occupancy（CO）或 final approval
這份保險就會結束，風險才正式轉回一般 homeowner insurance。
這也是為什麼在還沒有 CO 之前，施工風險不能用「已完工住宅」的角度來看。
結語：Builder’s Risk 是風險過渡期的保護網
Builder’s Risk Insurance 的存在，不是多此一舉，而是用來填補：
- 「開始施工」與「正式入住」之間的風險空窗
在自建或擴建過程中，懂得把施工風險和居住風險分開管理，才是真正成熟的屋主思維。
🏗️ What Is Builder’s Risk Insurance? A Must-Know Coverage for Construction Projects
Homeowners planning to build a garage, add living space, or complete major renovations often ask:
“I already have homeowner’s insurance—why do I need builder’s risk insurance?”
What Is Builder’s Risk Insurance?
Builder’s risk insurance is designed to protect structures under construction. It covers property-related losses during the construction phase.
In simple terms:
Homeowner’s insurance covers a completed home. Builder’s risk covers a home while it’s being built.
When Is Builder’s Risk Needed?
- New garage construction
- Additions or structural expansions
- Major renovations involving framing or systems
- Projects lasting several weeks or months
Owner-builders often face higher exposure because they assume full responsibility.
What Does Builder’s Risk Typically Cover?
- Fire and explosion
- Wind and weather-related damage
- Theft or vandalism of materials
- Accidental damage during construction
Most builder’s risk policies do not cover worker injuries, which are typically handled through workers’ compensation.
How Does Builder’s Risk Relate to CO?
Builder’s risk coverage usually ends once construction is completed and a Certificate of Occupancy (CO) is issued.
This marks the transition back to standard homeowner’s insurance.
Final Thought
Builder’s risk insurance fills the critical gap between breaking ground and moving in.
Understanding this transition helps homeowners avoid costly coverage gaps.