Contingency and hidden-condition checks for a 240 m² Seoul renovation

[lookTheRiver]

The finishes are flexible; concealed defects are not. My main concern is committing too much of a ₩624,100,000 renovation allowance before we understand the structure, moisture exposure and building services in this 240 m² small multifamily property in Seoul.

The current plan includes new kitchen and bathroom work, replacement finishes, electrical assessment and some energy improvements, without adding an extension. Cosmetic items could be delayed, whereas unsafe wiring, leaks or structural repairs would have to take priority. How would you set the contingency, and what inspections or bidder questions would uncover exclusions, access costs and material lead times before a contract is signed?

 

[KeenInk]

Before choosing a contingency, separate the budget into essential concealed work and finishes that can wait. Then make every bidder state what is excluded: demolition and disposal, access openings, reinstatement, moisture repairs, electrical remedial work, testing and permit-related responsibilities.

Will the building be vacant during construction? Working around occupants could materially change sequencing and temporary protection.

 

[zia_titles]

Plumbing access may be the biggest unknown, especially if bathrooms or kitchens share ageing concealed lines. I’d ask for moisture readings around wet areas, inspection of accessible pipework and drains, and a clear price basis for opening and closing walls or floors.

For electrical, “checks” is too vague. Request a circuit and load assessment, identify what must be replaced, and distinguish mandatory remedial work from optional upgrades.

 

[bikesAndEcho]

I agree on defining the electrical scope, but I wouldn’t open numerous finished surfaces before a contractor is involved; exploratory work can create damage without answering the right questions. A limited, jointly planned investigation is more useful.

At this preliminary stage I’d hold roughly 15% separately—about ₩94 million—and only reduce it after access, moisture and electrical uncertainties are priced. That is a planning allowance, not a Seoul rule. The property’s age and any renovation history would affect whether it is enough.

 

[HanaVoss]

Build the programme around decisions that cannot easily be reversed: investigations first, then concealed electrical and plumbing work, then waterproofing and energy measures, and finishes last. Ask bidders to list material lead times, permit-dependent items, inspection points and the dates when selections must be frozen.

Also require separate prices for cosmetic packages. If hidden water damage consumes the reserve, you can defer flooring or paint without renegotiating the safety-critical work.