
Is Builders FirstSource (BLDR) stock Halal?
Verdict for Builders FirstSource (BLDR): not Shariah compliant (FAIL). Screened October 2026 under AAOIFI Shariah Standard No. 21. Business activity: pass. Non-permissible income: pass. Interest-bearing investments: pass. Interest-bearing debt: fail. Preference shares: pass. Dividend purification factor: not applicable. Next review: November 2026.
Builders FirstSource is a prominent player in the construction materials sector, specializing in manufacturing and supplying a wide range of building products for residential and commercial constructions. The company's primary function is to provide essential building components such as prefabricated structural elements, lumber, windows, doors, and other critical materials used in the construction process. For Muslim investors, though, the most pressing question is simpler: is Builders FirstSource a Halal investment?
Is Builders FirstSource Shariah compliant?
No. In the October 2026 screening Builders FirstSource (BLDR) does not pass AAOIFI screening: it fails the interest-bearing debt screen. For industrial companies like Builders FirstSource, the product is rarely the problem; aircraft, vehicles and machinery are permissible. The exposure is leverage: fleets and factories are financed, and the 30% cap that AAOIFI Shariah Standard No. 21 places on interest bearing debt is the screen that decides most verdicts in this sector.
Does Builders FirstSource pass the business activity test?
The activity screen is only part of the picture this month: Builders FirstSource currently fails the interest-bearing debt screen, so the overall verdict is not compliant regardless of the business itself. The activity itself raises no Shariah objection; the scrutiny belongs to the financing.
Is Builders FirstSource's income Halal?
Yes, within AAOIFI's tolerance. Builders FirstSource's income from non-permissible sources stays below 5% of revenue in the October 2026 screening.
Does Builders FirstSource meet AAOIFI's debt and investment ratio requirements?
Not in full. Interest bearing debt currently exceeds the 30% cap, measured against a market capitalisation of $6.13B (market data as of 1 October 2026), while the other ratio stays within it. One breach is enough to fail the screening; the ratios are reassessed monthly under our Shariah Supervisory Board.
Why do other halal screeners show a different verdict for Builders FirstSource?
Screeners can disagree without either being wrong. AAOIFI Shariah Standard No. 21, which Tabadulat applies, measures interest bearing debt and investments against market capitalisation with a 30% ceiling. MSCI and FTSE measure them against total assets with a 33% ceiling, and S&P and Dow Jones Islamic use a multi year average of market capitalisation. Data dates differ too, because each provider reads filings and prices on its own schedule. The same company can therefore pass one standard and fail another in the same month. Tabadulat publishes one answer, the AAOIFI result as of October 2026, and re-screens it every month.
Tabadulat is an ADGM regulated brokerage whose license covers Shari'a Compliant Regulated Activities, as the FSRA permission names them. New to the terminology? Gharar and Maysir, Sukuk, Zakat and purification are all explained in plain English.
New to the screening method? Read AAOIFI Standards Explained: What Makes a Stock Halal?









