Most strata committees discover the difference between a cleaning contract and a cleaning service the hard way - after a contractor has cracked terracotta tiles using high-pressure cleaning, lost their insurance certificates mid-program, vanished without finishing a quoted scope, or returned a quote so low it bears no relationship to what the building actually needs.
This guide is for the strata manager, executive committee chair, or owners corporation member who is about to procure exterior cleaning services and wants to do it once, properly. It covers the eight criteria that separate strata-grade contractors from operators who will cost the scheme money, the red flags that should disqualify a quote on sight, how to structure a like-for-like comparison across multiple contractors, and what scheduled-program contracts should contain.
Why Strata Cleaning Procurement Is Different to Residential
Exterior cleaning for a residential home and exterior cleaning for a strata building share almost nothing operationally. Residential work is single-property, single-decision-maker, and runs at owner-occupier cost expectations. Strata work involves common property obligations under the Strata Schemes Management Act 2015, multi-storey access, formal procurement decisions answerable to lot owners, documentation that flows into the capital works fund and AGM reporting, insurance values an order of magnitude larger, and contractors working at heights where a single safety failure exposes the scheme to seven-figure liability.
The contractors who deliver exterior cleaning well at the residential level are not always the contractors who deliver it well at strata level. Different equipment. Different documentation. Different compliance posture. Different communication discipline. Committees that treat strata cleaning as “a bigger residential job” consistently end up with disappointing results or insurance-claim exposure they did not anticipate.
The eight criteria below are how strata managers in Sydney, Newcastle, and the Central Coast - the regions where SOAKD operates - separate a true strata contractor from a residential operator chasing larger jobs.
The 8 Criteria That Define a Strata-Grade Cleaning Contractor
1. Public Liability Insurance: Minimum $20 Million
Public liability insurance is the single most important contractor attribute for strata work. The $20 million minimum is not arbitrary - it reflects the value of a typical mid-rise strata building, the cost of a serious height-related injury claim, and the standard insurance position that lift companies, height-access contractors, and commercial-grade exterior cleaners hold.
Request a current Certificate of Currency at procurement, not just a “yes we are insured” statement. The certificate must show the insurer, policy number, insured amount, period of cover, and the specific activities covered. Confirm the renewal date. A policy that expires three weeks into a 12-month contract puts the owners corporation in an exposed position the moment lapsed cover is discovered.
Ask one further question: “Does your public liability cover specifically include exterior cleaning at heights?” Generic builders’ insurance sometimes excludes height work above six metres. The exclusion is rarely highlighted to clients.
2. Workers Compensation for All On-Site Staff
Every person on site - including subcontractors and labour-hire - must be covered by current workers compensation insurance. The Certificate of Currency for workers compensation is a separate document from public liability and must be requested separately.
For strata work this matters more than for residential work because injury rates on multi-storey exteriors are higher than at ground level, and uninsured contractor injuries on common property can create complex liability questions the owners corporation does not want to be answering.
3. Safe Work Method Statements (SWMS) Before Every Visit
Under the Work Health and Safety Act 2011, a Safe Work Method Statement is required for “high-risk construction work”, which includes any work at heights over two metres. Most strata exterior cleaning meets this threshold.
A professional contractor will produce a site-specific SWMS for the building before the first visit and update it for each subsequent visit if conditions have changed. The SWMS should identify the hazards, controls, equipment, training requirements, and emergency response for the specific work to be performed.
Generic, template SWMS that reference no actual site features are a red flag. So is reluctance to provide the SWMS in advance.
4. Height-Access Qualifications and Equipment
Multi-storey strata work requires either elevated work platforms (scissor lifts, boom lifts), industrial rope-access certification, or roof-anchor and harness systems with appropriate fall-protection plans. Ladders are not an acceptable primary access method for most strata work and using them as such breaches WHS obligations.
Ask: what access method will be used, what certifications does the team hold, and how is fall protection structured? A contractor who answers with confidence and specifics is a strata-grade contractor. A contractor who answers vaguely is not.
5. Surface-Specific Methodology Documentation
Strata buildings contain a mix of surfaces - rendered walls, painted weatherboard, Colorbond steel, terracotta or concrete tile roofs, brickwork, fibre-cement cladding, polycarbonate or glass balustrades, painted timber trim. Each requires a specific cleaning method. Using the wrong method on the wrong surface causes damage the contractor’s insurance may not cover (because the damage was foreseeable and the method was a choice, not an accident).
A strata-grade contractor provides a written methodology document explaining what method is used on each surface category and why. The most common method for walls and roofs is softwash - low-pressure cleaning with biodegradable solutions that kill biological growth at the cellular level. High pressure is reserved for hard ground surfaces like driveways and concrete common areas.
If a contractor quotes “we use high pressure on everything”, they are not a strata contractor. They are a residential pressure cleaner working above their service level.
6. Photographic Before-And-After Documentation
Photo documentation is not a nice-to-have for strata work - it is essential evidence for the maintenance record, the AGM presentation, the capital works fund justification, and any future insurance claim or NCAT dispute. Every visit should include systematic before-and-after photography of each surface category, time-stamped, captioned, and delivered in a standard format within 48 hours of the visit.
Committees frequently discover that contractor photo documentation is the difference between getting an insurance claim paid and having it denied. The cost of producing the documentation is built into the quote. Contractors who do not include photo documentation are not actually cheaper - they have moved the cost of evidence to the owners corporation.
7. Scheduled Program Structure, Not Ad-Hoc Bookings
A scheduled program is a written contract specifying visit frequency (typically quarterly or bi-annually), scope per visit, pricing per visit and per annum, change-order process, and cancellation terms. It transforms exterior cleaning from a reactive expense into a planned operating cost the committee can budget against.
Scheduled programs cost 15 to 30 percent less per visit than ad-hoc bookings because the contractor amortises mobilisation, equipment, and access setup across multiple visits. They also produce better outcomes because the contractor learns the building, the surface conditions, and the access patterns over time.
Procuring an ad-hoc one-off visit is appropriate for a trial run before committing to a program. After the trial, move to a scheduled contract.
8. Documented Defect Callback Response Time
Even excellent contractors occasionally leave defects - a missed section, a streak on a window, a piece of equipment debris on common property. The contract should specify the response time for returning to address defects: 48 hours for visible defects, seven days for non-urgent items.
A contractor who refuses to specify a defect callback timeframe in writing is a contractor who is hard to manage when something goes wrong. Strata committees never want to discover that their contractor takes three weeks to return phone calls.
Red Flags That Should Disqualify a Quote on Sight
In addition to the positive criteria above, several quote characteristics should eliminate a contractor from consideration without further evaluation:
- No Certificate of Currency provided within 24 hours of request - if they cannot find their own insurance documents quickly, they are not insurance-disciplined enough for strata work.
- No height-access certification when the building is multi-storey - this is not optional.
- Quote significantly below the market range (more than 30 percent under comparable quotes) - either they have misunderstood the scope, plan to use unsafe methods, or do not plan to actually complete the work.
- Inability to produce a sample SWMS for review - generic templates are an indicator the contractor does not actually produce site-specific SWMS.
- Quote is verbal only or by SMS without a written scope - the contractor is not built for procurement-grade work.
- References cannot be verified or are not from strata buildings - residential references are not a substitute.
- High-pressure cleaning recommended for tile roofs or rendered walls - indicates a fundamental method gap that will cause damage.
- No itemised pricing in the quote - prevents like-for-like comparison and creates dispute exposure when the scope inevitably needs to change.
Any one of these is enough to remove a contractor from the shortlist. Two or more is a contractor who should not be receiving strata work at all.
How to Compare Strata Cleaning Quotes Side-By-Side
The most common procurement error in strata committees is comparing quotes on price alone without normalising the scope. Three contractors quoting “exterior cleaning for the building” can return wildly different prices because each is quoting a different scope, frequency, method, and reporting standard.
The fix is to provide each contractor with a written scope-of-work document before they quote. The scope document should specify:
- Surfaces to be cleaned: roof, walls, gutters, common area paths, driveways, car parks, balustrades, windows (common area only, or also external face of lot windows), signage, and any other elements.
- Frequency: quarterly, bi-annually, annually, or scheduled per surface.
- Exclusions: lot owner balconies (typically excluded from common-property programs), private window faces, lot owner courtyards.
- Reporting deliverables: SWMS before visit, photo documentation, written completion report, annual summary.
- Insurance requirements: $20M public liability minimum, current workers compensation, product liability.
- Access constraints: parking, lift access, residential quiet hours, scheduling requirements.
- Defect callback expectations: response time and inclusion in standard quote.
Quotes returned against this scope can be compared directly. Quotes returned against different scopes cannot be compared - they are different products.
Cost vs Value: Why the Cheapest Quote Usually Costs the Most
Strata committees operate under genuine cost pressure. Levy contributions are a sensitive topic and exterior cleaning costs are large enough to attract scrutiny. The instinct to award contracts on lowest price is understandable.
But strata exterior cleaning is one of the work categories where lowest price most reliably produces highest total cost over the contract life. The mechanisms are:
- Method damage: high-pressure cleaning on render or terracotta tile damages surfaces that cost more to repair than the entire annual cleaning program would have cost to deliver correctly.
- Insurance gaps: under-insured contractors leave the scheme exposed to claims the contractor cannot pay.
- Defect rectification: contractors who cut corners on the initial clean leave work that the committee then has to re-procure to fix.
- Documentation gaps: missing photo evidence weakens insurance claims, NCAT submissions, and capital works fund justifications.
- Mid-contract failure: contractors who quote unsustainably low prices frequently abandon contracts after one or two visits.
The realistic price range for strata exterior cleaning across Sydney, Newcastle, and the Central Coast - for a comparable scope - typically clusters within 20 percent of the median quote. Contractors quoting 40 percent below the median are not offering better value. They are offering a different (worse) product. See the related article on exterior cleaning cost benchmarks for typical pricing ranges.
What a Strata Cleaning Contract Should Contain
A written strata cleaning contract should include:
- Parties: owners corporation (with the strata plan number) and contractor (with ABN and trading name).
- Scope of work: the document described above.
- Pricing schedule: per visit and annualised, with itemisation per surface category.
- Term: typically 12 months with renewal provisions; termination clauses for both parties.
- Insurance schedule: required levels, contractor’s current certificates attached as schedules.
- Documentation deliverables: SWMS, photos, completion reports, annual summary.
- Variation and change-order process: how additional work outside scope is requested, quoted, and approved.
- Defect callback terms: response times and inclusion in standard pricing.
- Cancellation and pause terms: notice periods, what happens if access becomes unavailable.
The contractor should provide the draft contract. If they will not, that is itself an indicator they are not built for this kind of work.
Procurement Process Recommendation
For an NSW strata committee procuring exterior cleaning for the first time or replacing an underperforming incumbent, the process that produces the best outcomes is:
- Draft a written scope of work (the committee, with input from the strata manager).
- Shortlist three contractors who service the relevant region and have demonstrable strata experience.
- Request quotes against the scope with a 14-day return window.
- Verify insurance certificates for each shortlisted contractor before evaluating quotes.
- Compare quotes on a like-for-like basis, scoring on price, methodology, documentation, references, and insurance position.
- Conduct a trial visit with the preferred contractor before committing to a scheduled program (most contractors accept this as a normal step).
- Move to a scheduled program if the trial confirms the procurement assessment.
- Review annually with input from the strata manager and recent service reports.
Done well, this process takes six to ten weeks and produces a contract the committee can sit behind for years. Done poorly - on a verbal quote and a phone-call decision - the committee will be re-procuring in six months.
How SOAKD Approaches Strata Cleaning
SOAKD Exterior Cleaning provides scheduled exterior cleaning programs to NSW strata and body corporate committees across Sydney, the Central Coast, Newcastle, Lake Macquarie, and the Hunter Valley. Our programs include site-specific SWMS for every visit, current certificates of currency for $20M+ public liability and workers compensation, photographic before-and-after documentation, structured completion reporting, and annual summaries formatted for AGM presentation.
We work with strata managers managing single buildings and portfolios. For committees comparing providers, we welcome scope-of-work documents and quote against them directly. Sample completion reports, references, and current insurance certificates are available within 24 hours of request.
For more detail on our strata service offering, see strata and body corporate cleaning. For NSW-specific compliance context, see our companion guide strata exterior maintenance schedule for NSW committees. To request a quote against your scope of work, call 0418 167 798 or request a quote online.
For related procurement frameworks see: commercial building wash tendering for facility managers running formal RFP processes; school exterior cleaning compliance for NSW school business managers; builder’s handover cleaning standards for PCG-window construction work.