build on sand

Foundation will fail

To build on sand is to establish something on an unstable or unreliable foundation, guaranteeing eventual collapse.

The phrase comes from a biblical parable contrasting a house built on rock with one built on sand.

Their business model was built on sand—one regulation change and the whole thing crumbled.

Related

downfall · doomed to fail · fragility · house of cards · unsoundness · precariousness · erosion · vulnerability · collapse · unpredictability · ruin · parable · insecurity · gamble · volatility · hazard · overconfidence · danger

Opposites
foundation stability

build on sandset in stone

Permanently fixed, unalterable

entrench · fortify · cement · shore up · buttress

prudence in planning

build on sandhedge one's bets

Reduce risk by diversifying

leave nothing to chance · think ahead · lay the groundwork · cover all bases · play it safe

Family

build, sand, builds, built, building, builder, builders, buildings, sands

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G