I often get asked by facilities managers and procurement teams how to write cleaning specifications that reliably win sustainability credits under schemes like BREEAM or LEED—without inflating tender prices. Over 12 years in operations and consulting, I’ve learned that the trick is to shift the conversation from specifying expensive brands to specifying measurable performance, lifecycle outcomes, and fair evaluation criteria. Below I share practical, field-tested ways to do that, plus sample wording you can drop into a tender.
Focus on outcomes, not brands
Specifying a particular brand or model is the fastest way to push tender prices up. Instead, write requirements that describe the outcome you need—reduced VOCs, percentage of reclaimed water used, microfiber performance, or measurable reductions in waste. Contractors will compete on how they achieve those outcomes, often proposing cost-effective methods you didn’t consider.
Set measurable, verifiable performance criteria
Buyers respond best to clear metrics. Here are practical examples you can include as minimum requirements:
When you require measurable specs, tenders can be evaluated objectively using a simple points system. That discourages padding bids with expensive brand-name solutions because bidders must demonstrate cost-effectiveness to score.
Use total cost of ownership (TCO) instead of first-cost
Cleaning tends to be procured on price per hour or price per square metre. That prioritises labour over performance and sustainability. I recommend asking bidders to provide a TCO breakdown covering:
Ask for a 3- to 5-year TCO model. In many cases, a slightly higher equipment cost (e.g., durable microfiber systems, dosing regulators) pays back quickly in reduced chemical use and longer-lasting consumables—without increasing overall tender price.
Encourage concentration-based chemicals and dosing controls
Dosing systems and concentrates slash transport and packaging costs while reducing the risk of overuse. Require these points:
These controls are inexpensive to implement and are often included as standard by professional contractors—so specifying them rarely drives up bids but helps secure green credits through reduced packaging waste and transport impacts.
Specify reusable microfiber systems and laundering standards
Single-use wipes and disposable mop heads generate a lot of waste. Microfiber systems are low-cost over time and improve cleaning outcomes when laundered correctly. Include:
Many contractors already provide microfiber systems; by specifying laundering standards you prevent subcontractors from cutting corners and ensure the lifecycle benefits are realised.
Write compact, non-prescriptive tender clauses (sample wording)
Below is a sample clause you can paste into tenders. It focuses on outcomes while allowing bidders flexibility:
| Requirement | Specification |
| Chemical use | Provide cleaning chemicals as concentrated solutions with closed dosing systems. Products must be certified to a recognised eco-standard (EU Ecolabel, Green Seal, or equivalent) and contain ≤5% VOC by weight. Supply technical data sheets and COSHH assessments. |
| Equipment | Provide vacuum cleaners with HEPA H13 filtration and minimum 200 AW suction for carpet areas. Equipment must meet relevant UK safety standards and include maintenance schedule. |
| Microfiber | Use reusable microfiber cloths and mops with documented particle removal performance. Provide laundering schedule and service records proving compliance with hygiene and lifecycle targets. |
| Waste | Demonstrate procedures to divert ≥70% of cleaning-related waste from landfill (recycling or energy recovery) and provide monthly waste reports. |
Make verification painless—ask for records you can audit
Sustainability credits need evidence. Don’t ask for exotic audits; ask for simple, standard records contractors already keep:
These documents are low-effort for good contractors but provide the verification auditors want for BREEAM/LEED credits.
Use weighted scoring to balance price and sustainability
In the tender evaluation matrix, allocate weight to lifecycle costs and sustainability performance rather than 100% to lowest price. For example, a practical split could be: 50% commercial price, 30% technical & sustainability performance, and 20% quality & delivery. That structure encourages bidders to present realistic, cost-neutral sustainability measures.
Train and incentivise staff—low-cost, high-impact
Behavioural measures often cost nothing but deliver creditable outcomes: programme of microfiber handling, correct dosing, and low-moisture cleaning saves chemicals, water, and time. Ask for a training plan with competency checks and include a small KPI-based bonus (e.g., credits for reducing chemical use by X%) to align contractor incentives with your sustainability goals.
Bringing sustainability into cleaning specifications doesn’t require expensive products or rigid brand lists. By setting clear, measurable outcomes, using TCO, demanding simple verification, and rewarding performance, you’ll make it possible for contractors to propose solutions that achieve BREEAM/LEED credits without pushing up tender prices. If you want, I can help convert your current spec into a lean, credit-focused version you can use in your next procurement.
