Contingency for a 230 m² Santiago warehouse renovation

[direct_map]

CLP 120,600,000 is my early allowance for renovating a 230 m² warehouse in Santiago, but too much of the existing condition is still unverified. The works would update the kitchen and washrooms, renew surfaces, review the electrical installation and improve energy performance. I am not proposing an extension.

Before selecting finishes, I want to test the building and the estimate. Which inspections would best uncover structural or moisture problems, and what should contractors be required to state about exclusions, sequencing and long-lead materials? I’d also like views on a sensible contingency before those checks are complete.

 

[knitsAndAtlas]

If the electrical, drainage and roof conditions are still largely unknown, I would initially allow 20% rather than treating this as a finishes-led renovation. That could come down toward 15% after targeted inspections and a properly itemised tender. Ask each contractor to list exclusions explicitly, including demolition, waste removal, making good, utility interruptions and work discovered after opening walls or floors.

 

[IsaWilde]

What will the warehouse be used for after renovation? Kitchen and bathroom requirements can vary considerably with the intended use and occupancy. Also clarify whether CLP 120,600,000 includes design work, permits, taxes and temporary services, or only construction. A contingency cannot compensate for entire cost categories sitting outside the estimate.

 

[oren_young]

I would investigate moisture before finalising flooring or paint specifications. Have someone inspect the roof, wall junctions, slab edges and any staining, then ask whether concealed areas can be opened selectively. The energy upgrades also need to be considered alongside ventilation; otherwise a measure intended to improve performance could leave condensation issues untreated.

 

[pine.still]

“No structural extension” does not necessarily mean no structural work. New service penetrations, cutting the slab for drainage, hanging equipment or changing openings can all affect the existing structure. Confirm the proposed routes first and obtain a structural opinion where they interfere with structural elements. Otherwise that risk will either appear as a broad contractor exclusion or an expensive variation.

 

[AriRidge]

I’d sequence it as investigation, outline design, permit discussion, intrusive checks, coordinated scope, then comparable contractor pricing. Identify any materials or equipment with long lead times before setting the programme, but do not order them until dimensions and service requirements are settled. Ask contractors to show dependencies in their schedule rather than submitting only a start date and total duration.

 

[knitsAndAtlas]

I’m less convinced that 20% should be the default. A large allowance can hide an incomplete scope without making the final price more reliable. Spend part of the available buffer on drainage tracing, electrical assessment and selective openings first; then assign separate allowances to unresolved items. Keep a smaller general contingency for genuinely unforeseeable conditions.

 

[sage_quill]

The phrase “electrical checks” needs tightening. Ask what is actually being inspected, tested, replaced and documented: incoming capacity, panel condition, earthing, existing circuits, new kitchen loads and emergency systems if relevant to the intended use. Also ask who is responsible for any required sign-off in Santiago. A contractor may price inspection while excluding every resulting correction.

 

[AishaSage]

Plumbing access could be the biggest sequencing trap. Establish where existing water and waste lines run, whether drains can be inspected, and whether new bathrooms require opening the slab. Quotes should separate service installation from excavation and reinstatement. That makes it easier to compare an accessible route with one that looks shorter on plan but creates much more demolition.

 

[direct_map]

This is helpful. I’m going to stop treating the contingency as one undifferentiated percentage. I’ll request separate allowances for electrical corrections, concealed plumbing, moisture repairs and any structural intervention, while retaining a smaller owner-held reserve. I’ll also ask for permit assumptions and lead-time items to be shown in the programme. The exclusion list now seems just as important as the priced scope.

 

[liv.ash]

For the tender comparison, use the same work breakdown for every bidder and place exclusions beside each line rather than at the end. Include investigation assumptions, demolition, disposal, protection, making good, testing and permit responsibility. Where one bidder gives a fixed sum and another gives an allowance, do not compare the totals without adjustment. Keep the owner contingency outside the contract price so its use requires a described change, cost and schedule effect.