Contingency and hidden risks for a 120 m² student housing renovation in Riyadh

[ledger.easy]

SAR 914,600 is my working allowance for renovating 120 m² of student housing in Riyadh, and I need to judge how much of that should remain uncommitted. The work includes kitchens and bathrooms, new finishes, electrical review and some efficiency improvements, but no added floor area.

I’m less worried about choosing finishes than discovering moisture, plumbing or structural problems after work begins. Which areas would you open up or survey before contractors price the job, and what exclusions should be challenged in their quotations? I’d also like to allow realistically for material lead times and trade sequencing.

 

[ledger.easy]

To clarify, SAR 914,600 is the current working budget rather than a settled contractor price. I’d particularly like to know what should be investigated before pricing, versus what can reasonably remain as a construction contingency.

 

[yuki_north]

Before any opening-up work, I would keep a fairly cautious reserve—perhaps 15% to 20%—and only reduce it once the electrical, plumbing and moisture risks are better understood. Is the building currently occupied, and can selected ceilings, service ducts or bathroom areas be opened for inspection? Access may matter more than the headline percentage.

 

[hugo.sage]

Ask bidders to state exactly what “electrical checks” means. Does their price cover testing only, minor repairs, replacement of damaged wiring, distribution-board work, additional outlets, and making good afterward? Do the same for plumbing: where are the isolation points, drains and concealed pipe runs, and who pays if access requires removing sound finishes?

 

[nova.pike]

I would not use contingency to compensate for an undefined scope. Split the uncertainty into provisional allowances for identifiable items and a separate owner-held reserve for genuinely concealed conditions. Otherwise every contractor can price the same description differently while appearing competitive.

 

[tradeTheChart]

Moisture deserves its own investigation, especially around bathrooms, the kitchen and any adjoining walls. Ask for evidence of active leakage, failed waterproofing, damaged substrates and previous patch repairs. Also require the contractor to describe the repair sequence; replacing tiles without resolving the underlying water path would consume budget without removing the risk.

 

[measureTheStory]

Sequencing could be tested during tender. Request a simple programme showing investigation and approvals first, then demolition, concealed services, waterproofing, testing, finishes and final commissioning. For specified materials, ask for lead times and acceptable alternatives before work starts. A cheap substitution decision made during a delay can undermine the durability you need for student housing.

 

[hugo.sage]

One caveat to “no structural extension”: are any internal walls being removed, door openings altered, or heavy equipment relocated? Those actions can still trigger structural questions even though the footprint stays unchanged. If none of that is happening, say so explicitly in the contractor scope to prevent either unnecessary allowances or later claims.

 

[tradeTheChart]

The total is difficult to assess from area alone. Does SAR 914,600 include loose furniture, appliances, professional fees, permit-related costs and temporary accommodation or storage, or only building work? For student housing, room count and bathroom intensity could influence cost more than the 120 m² figure.

 

[nova.pike]

Marco’s point also affects contingency. I would issue an exclusions schedule and make every bidder complete it rather than merely attaching their own terms. Look closely for disposal, protection of retained areas, after-hours work, utility interruptions, testing, making good, cleaning and permit coordination. Those smaller exclusions often become sequencing disputes.

 

[hana.march]

A practical route would be: limited opening-up survey, marked service drawings, moisture investigation, room-by-room scope, then comparable contractor pricing. Keep long-lead selections separate from demolition decisions. Before award, hold one meeting devoted only to assumptions and interfaces—who disconnects, who tests, who approves concealed work, and when areas become available to the next trade.

 

[FreyaReese]

I would also clarify whether cooling equipment, controls or insulation are included in the “moderate energy upgrades.” If they are excluded, state that plainly; if included, coordinate them with electrical capacity, ceilings and permit timing before finishes are ordered. For Riyadh, confirm the required approval path and expected timing with the relevant local parties rather than letting the programme assume permits will be instantaneous.