Professional Cleaning Case Study: Multi-Tenanted Business Park in Seven Hills

We were engaged to clean a multi-tenancy retail complex in Seven Hills that had been struggling with tenant retention partly due to poor common area maintenance. Our team walked the centre with the property manager and immediately identified issues that were driving tenants away — stained ceiling tiles in the main corridor, a bathroom block that smelled of blocked drains, and a car park where graffiti had not been addressed in months. Our Sydney commercial cleaners programme was designed to turn the centre around within 60 days, and we delivered on that commitment across Seven Hills, Prospect, and Winston Hills.

Initial Assessment and Restoration Plan

Initial Assessment and Restoration Plan covers specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We documented 28 deficiencies during our first walk-through, categorising each by urgency and impact on tenant experience. Our team prioritised the bathroom block and main entrance corridor because these were the first things visitors encountered. We also noted that the fire detection system panel covers in the corridor ceiling had accumulated significant dust, which we flagged as a potential compliance issue under AS 1851.1 (routine service of fire detection and alarm systems). Our report recommended that the property manager arrange a licensed fire service technician to inspect the detectors while we cleaned the covers and surrounding ceiling tiles. The manager acted on our advice and discovered two detectors that had failed sensitivity testing — an issue that could have had serious consequences if left unaddressed.

We priced the restoration phase separately from the ongoing maintenance contract. Our team completed the initial deep clean over two weekends, working overnight to avoid disrupting tenants. We stripped and resealed the corridor vinyl, replaced damaged ceiling tiles, deep-cleaned the bathroom block including descaling all fixtures and clearing blocked floor drains, and pressure-washed the car park stairwells. We also arranged graffiti removal from the car park walls through a specialist subcontractor we have worked with for years. The total restoration cost came to $1,270 above the base contract, and the property manager approved it without hesitation because we had documented every deficiency with photographs and cost justifications.

Ongoing Maintenance Programme

We designed a maintenance programme that covers trading-hours attendant service, nightly deep cleaning, and monthly specialist tasks. Our day attendant handles bathroom checks every 60 minutes, spill response, litter management in the car park and common areas, and bin servicing. We have found that the visible presence of a uniformed cleaner during trading hours reassures tenants and their customers that the centre is being actively maintained. Our Prospect retail clients, who manage a similar-sized complex, adopted this model after visiting our Seven Hills site and seeing the results firsthand.

Our night crew machine-scrubs all hard floors, sanitises all touchpoints, and cleans the tenants’ shared loading dock and waste storage area. We schedule specialist tasks on a rotating monthly calendar — escalator detailing in week one, high-level dusting in week two, car park pressure washing in week three, and grease trap servicing in week four. We have maintained this rotation for over a year and it keeps every zone on a predictable maintenance cycle that prevents the kind of gradual decline we found when we first took over the site.

Office Area Cleaning Frequency Guide

Tenant Satisfaction and Retention Results

Office Area Cleaning Frequency Guide requires specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We measure our success on this contract through tenant feedback and retention rates. Our team conducts a quarterly tenant satisfaction survey that covers common area cleanliness, bathroom condition, car park presentation, and responsiveness to cleaning requests. The average satisfaction score rose from 2.9 out of 5 when we started to 4.4 out of 5 after our first year. More importantly, the property manager told us that tenant retention improved significantly — two tenants who had been considering leaving renewed their leases, citing the improved presentation of the centre as a key factor in their decision.

Tenant Satisfaction and Retention Results includes specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We also tracked cleaning-related complaints, which dropped from an average of 12 per month to fewer than two. Our Winston Hills clients, who referred us to the Seven Hills property manager, have experienced similar improvements across their portfolio. We believe that consistent, documented cleaning performance is one of the most effective tools a property manager has for retaining tenants and attracting new ones, and our programme is built around making that performance visible and measurable.

We welcome enquiries from property managers and retail centre owners across Seven Hills, Prospect, and Winston Hills. Our team will walk your site, document every issue, and present a restoration and maintenance proposal with transparent pricing. Read our Eastern Creek cleaning case study for another example from our retail portfolio.

Frequently Asked Questions

What condition was the Seven Hills retail complex in when you started?
We documented 28 deficiencies including stained ceiling tiles, a bathroom block with blocked drains, graffiti in the car park, and dusty fire detection panel covers that posed a compliance risk under AS 1851.1.

How long did the restoration take?
We completed the initial deep clean over two weekends working overnight. This covered floor stripping and resealing, ceiling tile replacement, full bathroom restoration, car park pressure washing, and graffiti removal.

What fire safety issues did you identify?
We flagged dust accumulation on fire detection panel covers under AS 1851.1 routine service standards. The subsequent inspection by a licensed technician revealed two detectors that had failed sensitivity testing and needed replacement.

How much did the restoration cost?
The restoration phase came to $1,270 above the base maintenance contract. We documented every deficiency with photographs and cost justifications so the property manager could approve the work with full transparency.

What tenant satisfaction improvements did you achieve?
Tenant satisfaction scores rose from 2.9 to 4.4 out of 5 over our first year. Cleaning complaints dropped from 12 per month to fewer than two. Two tenants who had been considering leaving renewed their leases.

What does the ongoing maintenance programme include?
We provide a trading-hours attendant, nightly machine scrubbing and sanitisation, and monthly specialist tasks on a four-week rotation covering escalator detailing, high-level dusting, car park washing, and grease trap servicing.

Which suburbs does this case study cover?
This case study covers our work in Seven Hills, with related operations in Prospect and Winston Hills. Our team services retail complexes across the Hills District and western Sydney.

Do you conduct tenant satisfaction surveys?
We run quarterly tenant satisfaction surveys covering common area cleanliness, bathroom condition, car park presentation, and responsiveness to requests. We share the results with property managers as part of our monthly reporting dashboard.

About Clean Group

Clean Group is a Sydney-based commercial cleaning company with over 25 years of industry experience. Founded by Suji Siv, our team of 50+ trained professionals services offices, warehouses, medical centres, schools, childcare facilities, retail stores, gyms, and strata properties across Sydney, Melbourne, and Brisbane.

We are active members of ISSA and the Building Service Contractors Association of Australia (BSCAA). Our operations align with ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Workplace Health and Safety) standards. We hold membership with the Green Building Council of Australia and use eco-friendly, TGA-registered cleaning products wherever possible.

Every Clean Group cleaner is police-checked, fully insured, and trained in safe work procedures under SafeWork NSW guidelines. We operate 7 days a week, including after-hours and weekend services, to minimise disruption to your business.