Hidden renovation costs in Dubai and the contingency that absorbs them

# Hidden renovation costs in Dubai and the contingency that absorbs them

Most articles on this subject hand you a list of frightening line items and stop there. The line items are real, but they are manageable. What decides whether a Dubai renovation lands on budget is whether the risk was written into the contract before signing, through the contingency, the provisional sums, the retention and the rate schedule that prices whatever demolition uncovers.

The contingency number that matches your building's age

Our cost guides quote 10 to 15 per cent as the standard contingency, and that band holds for a building under about fifteen years old. A flat at Dubai Creek Harbour or in Dubai Hills has as-built drawings on file, an MEP system still inside its first service life, and a management office that can tell you what runs behind the ceiling void. Strip-out rarely produces anything the survey missed.

Past twenty years the arithmetic changes. On a Jumeirah or Umm Suqeim villa built in the late 1990s, the drawings are often lost, the drainage is gravity-fed cast iron, the distribution board was never sized for a modern kitchen, and at least one previous owner did unpermitted work that you will now inherit. Budget 20 to 25 per cent there. We have opened walls in that part of town and found a shower waste discharging into a void rather than a stack.

The towers in Dubai Marina and JLT that came up between 2006 and 2010 sit in the awkward middle. They are hitting the first full replacement cycle on fan coil units, valves and riser connections, so 15 per cent is a floor rather than a comfortable position.

A contingency only works if it stays yours. Release it only against written instruction, never as a fee the contractor has already earned and never as budget for upgrades you thought of in month two. That last habit is what turns a 15 per cent buffer into a 40 per cent overrun.

One honest caveat. If the property is a rental unit rather than your home, the better commercial decision is usually a smaller scope with a bigger buffer. A cosmetic refresh at around AED 1,500 per square metre with 20 per cent held back beats a capital job at AED 3,000 that leaves you nothing when the AC packs up in August.

What the approvals actually cost, and who charges what

Nobody quotes approvals accurately at the first meeting because the fee depends on the jurisdiction, and the jurisdiction depends on the plot. Dubai Municipality handles most of the city. Trakhees regulates the Nakheel-developed areas including Palm Jumeirah and Jumeirah Islands. The Dubai Development Authority covers the TECOM free zones such as Dubai Media City and Barsha Heights, and JLT answers to DMCC. Same scope of work, different fee table, different drawing standards, different waiting time.

The working bands we see:

• Building or Owners Association NOC on an apartment: AED 500 to 3,000
• Developer NOC on a villa community: AED 2,000 to 5,000
• Dubai Municipality plan check and permit: AED 3,000 to 15,000 for structural or layout change, less for a contained apartment scope
• DEWA approval for electrical or plumbing modification: AED 500 to 5,000
• Refundable security deposit held by the building or developer: AED 2,000 to 20,000

Total approvals commonly land between AED 8,000 and 30,000, most of which is a genuine cost and part of which comes back. The deposit is worth planning for separately, because it is cash tied up for the whole programme and released only after the building inspects common areas.

Two things drive that number up. Structural change requires stamped drawings from an approved consultant, whose fee sits outside the permit fee. Retail carries its own layer: hoarding, out-of-hours access, fire watch and a fit-out deposit, all set by mall management rather than the authority and all payable before the first tool is lifted. The retail approvals file is consistently the thicker one, as the mix on our completed projects page shows.

Variation orders: the 5 to 15 per cent that appears after you sign

A variation order is a written instruction that changes the scope, the cost or the programme of a signed contract. In UAE residential and fit-out work, variations typically run 5 to 15 per cent of the base contract value, and that is a normal figure rather than a sign of a bad contractor.

They come from four places. The client changes their mind, usually about the kitchen or the joinery. The site reveals something the survey could not see. The authority attaches a condition to the permit, such as a fire-rated ceiling or a revised extract route. Or the drawings were never complete enough to build from, which is the expensive one.

The problem is rarely the variation itself. It is the timing. Once demolition has happened and your flat is a shell, you have no leverage and no alternative contractor, so a rate you would have argued over in week one gets accepted in week six. That is why a lowball quote is not cheap: the missing lines return as variations at the moment you can least afford to negotiate them.

Two clauses fix most of this. Insist on a schedule of rates in the contract covering the trades most likely to change, so a variation is priced against an agreed unit rate rather than invented on the spot. And require that every variation is issued in writing with both a cost and a time impact, approved before the work proceeds. A contractor who resists writing down the delay caused by a change is telling you something.

We price differently. The quote is fixed by contract, and we do not add to it after the start. If you change the scope, we re-quote that change in writing before anyone touches it, and the original number for the original scope stays where it was.

Provisional sums: how to price what nobody can see yet

A provisional sum is an allowance carried in the contract for work that cannot be measured at tender stage. Waterproofing to an unknown extent, replacement of drainage behind a wall, structural strengthening that only a stripped slab will confirm. A prime cost item does the same job for a material you have not chosen yet, such as an allowance of AED 180 per square metre for floor tile.

Both are adjusted at final account against actual cost. That is the point of them: a contractor can give you a real fixed price for 90 per cent of the job instead of padding every line to cover the unknown 10 per cent.

They are also the easiest thing in a quote to abuse. A tender that looks 15 per cent cheaper than the others often achieves that by carrying thin provisional sums for the items most likely to blow up. So ask two questions before you compare quotes. How many provisional sums are in this contract, and what do they total as a percentage of the contract value. If the answer is above about 15 per cent, you are not holding a fixed price. You are holding an estimate with a signature on it.

The right use of a provisional sum on an old villa is narrow and specific. One for below-slab drainage, one for waterproofing, one for the distribution board upgrade, each with a stated basis of measurement. Anything vaguer than that is a blank cheque.

What old Dubai stock hides behind the wall

MEP is where old properties eat budgets. A full replacement of mechanical, electrical and plumbing services runs anywhere from AED 30,000 on a small apartment to well past AED 200,000 on a villa, and it is invisible in every photograph of the finished job.

Air conditioning is the single biggest item. On a twenty-year-old Jumeirah villa the ducted units are usually at the end of their life and often still on refrigerant that is no longer economic to service, so replacement lands at AED 20,000 to 80,000 per unit depending on tonnage and whether the ductwork survives. A villa with four zones therefore carries an AC risk larger than most people's entire contingency.

Towers on district cooling behave differently. You do not own a chiller, you own fan coil units fed by Empower or Emicool. Moving an FCU, changing capacity or altering the chilled water route needs approval from the provider as well as the building, and the demand charge on your account is set by connected capacity rather than by consumption. Increasing capacity to serve a new open-plan layout is therefore a commercial decision as much as a mechanical one.

Then the electrical side. Older villas frequently need a DEWA load increase before a modern kitchen and additional AC can be connected, and that application carries its own lead time. Add rewiring, and a new distribution board with submains climbs quickly.

One item specific to new property. A recently handed-over unit carries the developer's own defects liability period, generally one year on non-structural work. The moment your contractor opens the same wall, the cover on that area is arguable at best. Get in writing what remains covered before you start, particularly if you are renovating inside the first twelve months. The numbers behind full scopes on both old and new stock are set out in our villa renovation cost breakdown.

The costs that never appear on the contractor's quote

These are the lines that sit outside the contract entirely and still come out of the same bank account.

• Construction waste removal: AED 3,000 to 25,000 for the project, depending on volume, tipping fees and whether skips can reach the unit
• Service charges on the property, which continue while it is a building site
• The 5 per cent housing fee attached to the DEWA account, which does not pause because nobody is living there
• Alternative accommodation, and the rent you are not collecting if the unit was let
• Storage for furniture, commonly a few hundred to over a thousand dirhams a month
• An independent snagging inspection at handover, priced by unit size
• Summer programme drag: the midday work ban from 15 June to 15 September, 12:30 to 15:00, plus slower drying times for screed and paint in high humidity

The last one gets dismissed and then paid for. A July programme is not a January programme. High humidity extends curing times on screed, plaster and paint, so a schedule built on winter drying assumptions slips by days per stage without anyone doing anything wrong.

For commercial work, add the cost of the space not trading. On a mall unit that figure usually exceeds every construction line above it combined, which is why fit-out programmes are built backwards from the opening date. Our fit-out rates per square foot show how that pressure lands in pricing.

Retention, snagging and the defects liability period

Retention is a percentage of each payment that the client holds back as security against defects. In UAE fit-out contracts it typically runs 5 to 10 per cent of the contract value, often released in two halves: part at practical completion, the balance at the end of the defects liability period.

The DLP is usually twelve months from handover for finishes and MEP work. Structural work sits under a separate ten-year decennial liability, which is a different mechanism and does not depend on a retention being held. During the DLP, defects in workmanship are the contractor's cost to put right. Damage from use, from owner-supplied materials, or from a third party working in the same space afterwards is not.

Snagging is the inspection that starts the clock. A proper snag list is written item by item, with a location and a photograph, and agreed before final payment moves. Treating handover as a walk-through with a coffee is the first mistake. Releasing the full retention the day the site is clean, before a seasonal cycle has tested the silicone and the joinery doors, is the more expensive one.

For a homeowner this has one practical consequence: the last 5 to 10 per cent of your budget is not spendable money. It is a year-long hold. Plan the cash flow accordingly, and do not book the furniture delivery against it.

We carry a one-year workmanship warranty on our work, and our schedule and quote are fixed by contract with a daily percentage payable by us for delay. That combination is deliberate. It puts the cost of a slipped programme where the control over it sits.

Writing the contingency into the contract instead of your head

A contingency that exists only in your own spreadsheet does nothing. It has to appear in the contract structure, or it will simply be spent as the price of the first surprise.

The version that works looks like this:

1. 1. A bill of quantities with real line items, not a lump sum with four headings
2. 2. Named provisional sums for the specific unknowns, with a stated basis of measurement
3. 3. A schedule of rates covering the trades most likely to vary
4. 4. A written variation procedure requiring cost and time impact before approval
5. 5. Retention at 5 to 10 per cent, with release tied to the end of the defects liability period
6. 6. A stated position on cost escalation, so a material price move has a defined home

That last point matters more on long programmes. On a six-week apartment refresh material prices barely move; on a six-month villa with imported stone and joinery they can. Some contractors carry an escalation clause allowing an adjustment if a named material moves beyond a threshold. We hold the quoted price and absorb that risk instead, which is one reason we quote after the specification is locked rather than before.

Read whichever version you are offered carefully. An open escalation clause turns a fixed price into an estimate, and so do thin provisional sums. If you want the numbers checked against your own drawings and building, send us the scope and the building name and we will tell you where the risk actually sits.

FAQ

What percentage contingency should I budget for a Dubai renovation?

Between 10 and 15 per cent for a building under about fifteen years old, where drawings exist and the MEP is still in its first service life. For property past twenty years, such as older Jumeirah and Umm Suqeim villas, budget 20 to 25 per cent. Towers from the 2006 to 2010 wave sit in between, and 15 per cent is the floor rather than a comfortable margin.

What is a variation order and why does it happen during renovations?

A variation order is a written instruction changing the scope, price or programme of a signed contract. Variations typically run 5 to 15 per cent of contract value in the UAE, and they come from client changes, site conditions found at strip-out, permit conditions imposed by the authority, or incomplete drawings. Require every variation in writing, with both cost and time impact, before the work proceeds.

What is retention in a fit-out contract and how long until I get the money back?

Retention is 5 to 10 per cent of the contract value held back as security against defects. It is usually released in two parts, some at practical completion and the balance at the end of the defects liability period, which is normally twelve months from handover. Treat that money as unavailable for a year rather than as budget you might get back early.

What are provisional sums and when should I use them?

A provisional sum is an allowance for work that cannot be measured before demolition, such as waterproofing of unknown extent or below-slab drainage. It is adjusted at final account against actual cost. Use them narrowly and name them specifically. If provisional sums exceed roughly 15 per cent of the contract value, the quote is an estimate rather than a fixed price.

Why do old Dubai properties cost more to renovate than new ones?

Missing drawings, end-of-life MEP and unpermitted work by previous owners. AC replacement alone runs AED 20,000 to 80,000 per unit on an older villa, full MEP replacement can pass AED 200,000, and older properties often need a DEWA load increase before a modern kitchen can be connected. None of it is visible until the walls are open, which is precisely why the contingency band is higher.