Construction Cost Inflation in Saudi Arabia: How to Build It Into Your Budget

An illustrative method for escalating a Saudi construction budget over a multi-year build, showing how material, labour and delay assumptions change the final cost.

When many large projects compete for the same materials, contractors and labour, construction costs can rise faster than general inflation, and a budget prepared at today's prices will understate a project that completes in three years. The fix is not to guess a trend but to escalate each cost category separately and test the effect of delay. The example below uses invented rates to show how.

The situation

An investor is budgeting a mid-rise residential building in a Saudi city, with construction spread over three years. The quantity surveyor has priced the works at current rates. The investor wants to know how much to add for escalation and what happens if the programme slips by a year.

Assumptions (illustrative)

• Construction cost at current prices: SAR 40,000,000 (illustrative).
• Split: materials 50 per cent, labour and subcontracts 35 per cent, equipment and site overheads 15 per cent.
• Assumed annual escalation: materials 5 per cent, labour 4 per cent, overheads 3 per cent.
• Spending profile: 30 per cent in year one, 45 per cent in year two, 25 per cent in year three.
• Escalation applied from today to the middle of each year, simplified here to one full year of escalation per year of spending.

Step 1: Weighted annual escalation

(50 per cent times 5) plus (35 per cent times 4) plus (15 per cent times 3) equals 2.5 plus 1.4 plus 0.45, equal to 4.35 per cent per year.

A single blended rate is easier to apply, as long as the category weights reflect the actual project.

Step 2: Year one cost

SAR 40,000,000 times 30 per cent equals SAR 12,000,000; multiplied by 1.0435 equals SAR 12,522,000.

Even early spending carries some escalation, because it happens after pricing.

Step 3: Year two cost

SAR 40,000,000 times 45 per cent equals SAR 18,000,000; multiplied by 1.0435 twice (about 1.0889) equals about SAR 19,600,100.

The heaviest spending year carries two years of escalation.

Step 4: Year three cost

SAR 40,000,000 times 25 per cent equals SAR 10,000,000; multiplied by 1.0435 three times (about 1.1363) equals about SAR 11,362,600.

Late items such as finishes and systems see the most escalation.

Step 5: Total escalated cost

SAR 12,522,000 plus SAR 19,600,100 plus SAR 11,362,600 equals about SAR 43,484,700, an escalation allowance of about SAR 3,484,700.

Escalation adds about 8.7 per cent to the current-price budget under these assumptions.

Step 6: Effect of a one-year delay

Delaying every year of spending by one year multiplies the total by 1.0435 again: SAR 43,484,700 times 1.0435 equals about SAR 45,376,300.

A year of delay adds about SAR 1,891,600 before counting extra financing and overhead costs.

What changes the answer

• Steel, cement, MEP equipment and finishes can each move differently, so a single rate may hide a large swing in one category.
• Contract form matters: a lump-sum contract shifts escalation risk to the contractor, who will usually price it in.
• Labour costs are affected by Saudisation requirements and competition for skilled workers during periods of heavy project activity.
• Imported items expose the budget to supplier-country inflation and shipping costs, even though the riyal is pegged to the dollar.
• Delays also add financing and site overhead costs not captured in escalation alone.

What the numbers tell you

• Escalate each major cost category separately, then combine them.
• Apply escalation according to when money is spent, not to the whole budget at once.
• Price the cost of a one-year delay explicitly and decide whether to hold a contingency for it.
• Use GASTAT price indices and recent tender results as inputs rather than a single guessed rate.
• Revisit escalation assumptions at each design stage and before signing the construction contract.

Limits of this example

Every figure above is an illustrative assumption used to show the method, not a quote, valuation or market rate. Costs, rates, fees and regulations change and must be confirmed with the relevant authority, lender or supplier before you commit.

If a Vision 2030 programme or market trend is shaping your investment case, Domira can test it against real land, construction costs and local demand in the city you are considering before you commit capital.