This is Owl Standard's compliance knowledge hub compiled for landlords. We believe landlords should understand the ordinance, standards, and timeline before making any decisions — not be pushed straight into a sales funnel.
A complete guide to the BHU Ordinance and landlord obligations.
Specific technical requirements on floor area, ceiling height, ventilation, and facilities.
Critical dates for legislation, registration, enforcement, and the grace period.
17+ questions and answers on the topics landlords care most about.
Understanding the most common BHU certification failures helps landlords address issues before submission — saving time and money.
Not all subdivided flats can obtain BHU certification. Learn which unit types are ineligible and why — before spending money on an assessment.
BHU ventilation requirements explained: mechanical ventilation specs, air change rates, and what landlords need to know about the most commonly failed certification step.
Internal floor area must be at least 8 sq m (bathroom included) and ceiling height at least 2.3m (measured at lowest point). Includes calculation methods and solutions for non-compliant units.
With 500+ subdivided units under management over 8 years, Owl Square Group shares the 5 most common misconceptions landlords hold about BHU compliance.
Hiring a consultant typically adds HKD 5,000–15,000 in coordination fees but saves 20–40 hours of landlord time and reduces rejection risk. A complete cost comparison to help you decide.
The question every landlord asks: what does BHU certification actually cost in total? This guide combines all three stages into one complete picture.
Market cost ranges for fire doors, mechanical ventilation, and independent utilities metering — the three most common BHU renovation items.
A complete breakdown of BHU compliance costs, including HKIS market benchmarks and hidden costs landlords often overlook.
Form BHU-01 is the official Buildings Department application for BHU certification. This guide walks through each section, required attachments and common rejection reasons.
An Authorized Person (AP) is legally central to BHU certification. Learn what APs do, what they're responsible for, and what to look for when selecting one.
From initial assessment to receiving the BHU certificate, a typical case takes 4–8 months. Here's what determines the timeline.
Landlords with multiple subdivided units in one property face unique strategic decisions. Here's how to prioritise and sequence BHU certification.
Pre-1980 tenement buildings face specific BHU challenges. Here's the checklist of works most commonly required before certification.
A complete guide for mainland China and overseas landlords with Hong Kong subdivided flats who cannot handle compliance procedures in person.
If you start the BHU certification process today, can you realistically complete it before the March 2027 enforcement deadline? The numbers tell the story.
BHU landlords face two compliance approaches. This guide analyses the real costs, risks and conditions of each option to help you decide.
Analysis of OC deed restrictions, their legal weight against BHU ordinance requirements, and three compliance paths available to landlords.
With fewer than 11 months until the 1 March 2027 BHU enforcement date, there are three things landlords must act on immediately.
How the 8 sq m is measured, bathroom inclusion rule, and the 2.3m measurement point.
Natural vs mechanical ventilation routes, technical requirements, and when ventilation cannot be achieved.
Six ineligibility criteria: floor area, ceiling height, ventilation, building type, public housing, and rooftop structures.
The knowledge hub provides general information. For your unit's specific situation, we recommend a direct WhatsApp consultation — get an assessment within 30 minutes.
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