2026-10-23T18:50:32

Building Materials Wholesale Price Index September 2026: Up 9.63% Year on Year

The building materials wholesale price index September 2026 rose to 111.64 (2023=100), 9.63% above September 2025 and 0.19% above August 2026, per the BPS press release of 1 October 2026. Since December 2025 it is up 8.02%. This is a wholesale-level price, not a retail shelf price, but its direction is a reference for contractors and project buyers. This article summarises the fastest-rising commodities and how to budget a project as of 23 October 2026.

Building materials wholesale price index September 2026: rising commodities and project budget impact

Commodity	Index Sep 2025 → Sep 2026 (2023=100)	Change (BPS)	homeX note	Source
Building/construction group (overall)	101.83 → 111.64	+9.63% y/y; +0.19% m/m; +8.02% YTD	General reference; residential and non-residential buildings up 10.15% y/y	BPS
Rebar (concrete reinforcing steel)	95,53 → 106,98	+11,99% y-on-y; -0,10% m-to-m	High y/y but slightly down this month; see the homeX rebar price article	BPS
Cement	101,40 → 108,94	+7,44% y-on-y; +0,17% m-to-m	Moderate rise; lowest among the main structural materials	BPS
Sand	103,36 → 112,43	+8,78% y-on-y; +0,03% m-to-m	Almost flat this month; 0.70 points annual contribution to the building index	BPS
Crushed stone	100,76 → 112,71	+11,86% y-on-y; +0,32% m-to-m	Rising fast; 0.71 points annual contribution	BPS
Sirtu (sand and gravel mix)	106,63 → 123,81	+16,11% y-on-y; +0,25% m-to-m	One of the largest rises in the aggregate group	BPS
Ceramic tiles	100,57 → 113,17	+12,53% y-on-y; +0,49% m-to-m	Rising fast; see the tile installation cost article for the BoQ impact	BPS
Asphalt	102,77 → 131,45	+27,91% y-on-y; +0,54% m-to-m	Highest annual rise among the main materials in this table; relevant for roads and warehouse yards	BPS
Wall paint; ordinary roof tiles; PVC pipe	Index not shown in this summary	Paint +9.80% (m/m +1.05%); roof tiles +9.82% (+1.78%); PVC pipe +6.19% (-0.85%)	Roofing and paint rose quickly this month; PVC pipe fell	BPS
Ready mix (cement mortar); plywood	Index not shown in this summary	Ready mix +3.61% y/y; plywood +7.53% y/y	Ready mix rose far less than steel and stone, so concrete per m3 does not automatically rise 10%	BPS
Electrical cable; door/window frames; thinner	Index not shown in this summary	Cable +28.22%; frames +26.91%; thinner +30.71% (y/y)	Largest annual rises after asphalt; re-check cable and frame quotes more often	BPS
August 2026 (comparison)	+9.52% y/y; +0.41% m/m	Rebar +12.60%, cement +7.42%, sand +8.74%, crushed stone +11.50% (y/y)	Annual uptrend consistent from August to September; monthly pace slowed from 0.41% to 0.19%	CNBC Indonesia

Source: BPS, Official Statistics Release No. 95/10/Th. XXIX, 1 October 2026 (index, y/y, m/m); BPS August 2026 and CNBC Indonesia of 1 September 2026 for comparison. IHPB is a BPS wholesale price index (2023=100), not a retail shelf price or a per-brand price. Data gaps: this summary covers only some of the 65 building commodities; we did not find city-level (Jabodetabek) indices in the release; lead-time and factory stock figures are unavailable. Data as of 23 October 2026.

How to use the IHPB figures in a project budget

homeX analysis, not data: use the annual rise as a rough upper bound when comparing an old BoQ with a new quote, not as a shelf price. Simple example: a structural-concrete BoQ from last year that uses rebar and crushed stone should carry about 10–12% contingency for those two items, not the 9.63% average, because rebar is up 11.99% and crushed stone 11.86% y/y. Ready mix is only up 3.61% and PVC pipe fell 0.85% this month.

Government and contract price adjustment

detikFinance (2 June 2026) reported PU Minister Dody Hanggodo saying the ministry may ask for extra budget if material prices rise, and LKPP is said to issue a circular on contract price adjustment as in 2022; we have not found that circular published. For private contracts, write a price adjustment clause in from the start. Perpres 16/2018 Article 52 lists price adjustment among the contents of a government procurement contract.

Buyer tips

Compare quotes with the IHPB of the same commodity, not the 9.63% overall average.
Lock in rebar and crushed stone first: both are up more than 11% y/y.
Write the quote validity and a price adjustment clause into the contract.
Watch the BPS release at the start of each month; the next is usually on the first working day of next month.

Request a building materials wholesale price index September 2026 quote for your project

homeX can compare several brands at once and prepare a written quote for projects, renovations or shop stock. Send your needs (brand, size, quantity, location) via WhatsApp +62 821 1818 998, or visit the homeX showroom: Priskilla Tower, 6th floor, Jl. Atang Sanjaya No.21, Benda, Kota Tangerang, Banten 15125. Visit the homeX Showroom.

Disclaimer: prices change without notice and differ by store, city, pack size, grade and promotion. Data as of 23 October 2026; always confirm with the seller before buying.

FAQ

How much did building material prices rise in September 2026? Per BPS, the building/construction wholesale index is 111.64, up 9.63% y/y and 0.19% m/m. Rebar +11.99%, cement +7.44%, sand +8.78%, ceramic tiles +12.53% y/y.

Is IHPB the same as shop prices? No. IHPB measures wholesale prices (2023=100) and is a guide to direction; retail prices by brand and city can differ. Compare with shop price lists in the homeX price articles.

Which material rose the most? Among main materials, asphalt +27.91% y/y; from the wider BPS table, thinner +30.71% and electrical cable +28.22%. Rebar +11.99% and crushed stone +11.86% lead the structural materials.