Buildings account for about 40% of global CO2 emissions, so it’s no wonder why so much focus goes toward green building systems and reduced emissions from corporate structures. Reducing this structural carbon footprint can help counter climate change and push us toward the goals outlined in the Paris Agreement and other climate action pacts.
To help you plan and work toward lowering emissions from corporate buildings, you can look to a GHG emissions reduction audit checklist for building owners. These audit checklists and GHG inventory management can all help you reach your carbon emissions goals.
Continue reading for more about these audits and the actions you can take to reduce your building’s emissions.
How Do You Reduce GHG in Buildings?
Reducing greenhouse gas emissions (GHG emissions) in buildings starts when construction begins and continues throughout the building’s lifespan. Let’s review how to reduce emissions in both stages to minimize a building’s environmental impact.
GHG Emissions Reduction Audit Checklist for Building Owners During Construction
Starting on the right foot regarding GHG emissions reductions for building owners begins at the construction phase. Of course, none of this will apply if we’re talking about an existing building. However, if you’re constructing a new building, these tips can help lower the carbon footprint of erecting a new building.
Reuse Old Buildings
Instead of commissioning a new building, you can reduce emissions by reusing an old building. In fact, by doing this, you can save 50% to 75% of the embodied carbon emissions — the emissions associated with the materials and construction process — relative to new construction.
So, when considering a new building, think to yourself, “Is there an existing building we can renovate to fit our needs?” If so, you can reduce carbon dioxide (CO2) emissions by rehabilitating the old building. Plus, you can use some of the character in older commercial buildings to your advantage in the design phase.
Remember, that when reusing older buildings, you’ll likely have some extra work for efficiency improvements, but the emissions savings will easily offset that need.
Use Low-Carbon Concrete
Concrete production isn’t known for its GHG emissions, but its sheer weight and the amount that goes into a new building make it the most significant embodied carbon source in many projects. In fact, cement accounts for a whopping 7% of all global emissions and 50% to 85% of the embodied carbon in a building project.
You can reduce your building’s carbon footprint by opting for lower-emission concrete, such as those with fly ash, slag, or calcined clays. You can even opt for lower-strength concrete where it makes sense.
Limit Carbon-Heavy Materials
Materials with big carbon footprints, such as metals, plastic, and foam, can be a part of the construction process but seek low-carbon alternatives where possible to help with the decarbonization of your project.
So, consider a wooden instead of a steel structure to reach your building’s GMG emissions reduction goals. Or maybe opt for wooden siding instead of vinyl.
Reuse Materials
During the construction or renovation process, don’t immediately scrap all the old materials. Many of those materials, such as metal, bricks, concrete, and wood, are reusable. And each item you reuse directly reduces your project’s emission factors. Plus, it’s a more cost-effective way to build.
Focus on Recycled Materials
Recycled materials can help greatly lower the GHG emissions in your building or renovation project. For example, new steel can have five times the carbon footprint of recycled steel. On top of lowering your carbon footprint, recycled materials are often less expensive than new materials.
Minimize Finished Materials
Finishings like vinyl flooring or carpeting add to the carbon footprint of your project. Instead of going with these finishings, choose materials that don’t need finishings, such as polished concrete for the floors.
GHG Emissions Reduction Audit Checklist for Building Owners After Construction
After construction, you are still responsible for keeping the ongoing building emissions as low as possible, whether through improved energy efficiency, reduced waste, or improved sustainability. Let’s review some action plans building owners can take to ensure they improve their energy conservation and the building’s ongoing GMG emissions remain low.
Update Heating and Cooling
Heating, ventilation, and air conditioning (HVAC) make up 40% to 60% of all building carbon emissions, so this area is ripe for cutting. First, ensure you have an efficient system installed, such as some of the newer passive heating and cooling setups.
It’s also a good idea to have a programmable system. You can program it to a warmer setting during off-hours and a comfortable setting during occupancy hours.
Also, most buildings have outdoor air ventilation to keep the inside fresh, but the issue is this system runs constantly and always needs to be heated or cooled. You can counter this by installing air-quality sensors that detect when ventilation is necessary and activate this system only when needed.
This will help reduce your energy consumption, lower overall energy costs, and shrink your building’s footprint.
Perform Lighting Upgrades
Up to 40% of a commercial building’s energy consumption goes toward lighting, making this another prime target for reducing building emissions and adding in some cost savings.
Some ways to immediately lower the carbon footprint of your lighting is to install smart lights that only turn on when an area is in use and to replace all inefficient incandescent lights with more eco-friendly LED lighting. You can also add some daylighting to certain areas of the building, taking advantage of the greenest of all lights — the sun.
Install Renewable Energy
Offset some or all of your buildings’ energy use by installing renewable energy, such as solar panels. These energy efficiency measures may have significant upfront expenses, but federal and local government incentives and overall electricity savings can help make up for this cost.
By installing green appliances, you can lower energy consumption and increase energy savings. For example, you can replace old and inefficient boilers and water heaters with more efficient solar water heaters to lower electricity or natural gas usage when generating hot water. You can even swap old hard-wired ventilation fans with solar-powered ones to improve energy performance.
Reduce Water Waste
Sustainable water use can also go a long way in reducing your environmental impact and cutting operational costs. Some ways to help lower water use and waste include retrofitting low-flow water fixtures, reclaiming water systems for non-potable water recycling, and collecting rainwater for use in on-site irrigation and decorative water features.
How Do You Conduct a GHG Inventory?
First, what is a greenhouse gas (GHG) inventory? According to the U.S. Environmental Protection Agency (EPA), it is “a list of emission sources and the associated emissions quantified using standardized methods.”
The EPA outlines the GHG inventory development process in four steps: scope and plan, collect and quantify data, create a GHG inventory management plan, and set targets, track, and report. Let’s review these four steps in more detail.
Step 1: Scope and Plan
To conduct a GHG inventory, you start by reviewing the organization’s GHG accounting methods and how it reports on these emissions. The organization and its stakeholders must then determine the organization’s emissions boundaries, select a base year to start from, and consider bringing in a third party to verify the improvements.
Step 2: Collect and Quantify Data
In the second step, you’ll identify all the GHG data required and the preferred data-collection methods. Then, you’ll develop procedures, tools, and guidance that adhere to these requirements. After that, gather and review all the facility data, such as electricity and natural gas consumption from the baseline year you chose, and use estimation to fill in any data gaps. From there, you can calculate your emissions.
Step 3: Create a GHG Inventory Management Plan
Next, you‘ll create formal data collection procedures and document processes in the inventory management plan. This will include all institutional, managerial, and technical arrangements made for data collection, inventory preparation, and implementation of steps to manage inventory quality.
This management system ensures a systematic process is in place to help prevent and correct errors and identify where investments net the greatest improvements in inventory quality. However, this system’s main focus is to ensure the credibility of the organization’s GHG inventory data using five key GHG accounting principles, which we’ll cover later.
Overall, your inventory management plan will have seven key steps:
- Create an inventory quality team.
- Create a quality management plan.
- Perform generic quality tests.
- Perform source-specific quality tests.
- Review final inventory estimates and reports.
- Institutionalize formal feedback loops.
- Report, document, and archive data.
Step 4: Set Targets, Track, and Report
With the process in place, it’s now time to set your building-emissions-reduction targets relative to the base year you selected and, if you like, bring in a third party to verify your targets are attainable and helpful. You’ll then report all data as needed, publish a public GHG target report, and track your progress toward effective energy management and emissions reductions.
What Is the Standard for GHG Accounting?
Greenhouse gas emissions accounting and reporting must be based on five key principles. The principles are as follows:
- Relevance: The GHG inventory must appropriately reflect the company’s GHG emissions and serve internal and external users’ decision-making needs.
- Completeness: The organization must account for and report all sources of GHG emissions and activities within the chosen boundaries. It must also disclose and justify any GHG emissions it excluded.
- Consistency: An organization’s methodologies must remain consistent to allow accurate and meaningful GHG emission comparisons.
- Transparency: Address all relevant issues factually and coherently using a clear audit trail. If relevant assumptions are used, the organization must disclose them and make appropriate references.
- Accuracy: Ensure the GHG emissions quantification is neither over nor under the actual emissions and that uncertainties are reduced as much as possible. The organization must also ensure sufficient accuracy so users can decide based on the reported information’s integrity.
How Do You Measure GHG Emissions in a Building?
Emissions from a building can come in all three scopes: scope one, scope two, and scope three. When calculating GHG emissions from a building, you must consider all three scopes, which can make it tricky.
Scope one emissions are relatively simple to track, as these are direct GHG emissions, such as burning fossil fuels. To calculate GHG emissions in this scope, review resource consumption on utility bills, and use a calculator to determine the GHG emissions that amount of consumption made.
Scope two emissions are indirect GHG emissions that stem from the building’s energy usage from the electrical grid. So, if your company’s electricity comes from a coal-fired plant, this would include your building’s share of that plant’s emissions based on your energy consumption.
You can estimate your scope two emissions using a GHG emissions calculator and the building information, such as square feet. Keep in mind, getting a precise number is generally not possible because many power grids include multiple energy sources, including coal, natural gas, nuclear, and solar.
Finally, scope three emissions include GHG emissions from all other sources, including the supply chain and other business operations that are not within the organization’s control. In terms of a building, this can include all embodied carbon too.
Scope three emissions are difficult to track and are generally not in the organization’s control, for this reason, organizations normally aren’t required to report on them. However, monitoring, understanding, and reducing scope three emissions can help you create a green building.
Help Fight Global Warming by Auditing and Reducing Your Building’s GHG Emissions
Global warming and climate change are critical, and it’s time for everyone to chip in and do their part. This includes building owners reducing their buildings’ carbon footprints. Fortunately, GHG emissions reduction audit checklists for building owners can help in this process by giving you firm steps to follow and the data you need to successfully reduce your structural carbon footprint.
If you’re not yet ready to take on the task of reducing building emissions or already have and want to further decrease your corporate carbon footprint, we have options for you at Terrapass. Check out our voluntary carbon credits, and see how they can help offset any remaining corporate emissions, helping you attain or get closer to being a net-zero carbon emitter.
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Carbon Footprint
Climate-Linked Supply Chain Risk Is Already in Your P&L
The earnings calls that quietly reframed climate from sustainability question to operating risk.
Three earnings calls in the last 18 months tell the story without any help from a press release.
Hershey, May 2024: cocoa price exposure compresses margin, and the company attributes part of the cost shock to West African weather. Olam, July 2024: coffee climate exposure quantified in the annual report. JBS, January 2025: supply chain climate disclosures expanded materially in response to investor pressure and regulatory expectation. None of these companies issued the announcement as climate news. They issued it as financial news. The climate-linked supply chain risk did not arrive with a sustainability framing; it arrived as a P&L line.
You are probably reading this article because you suspect the same thing is happening to your business. This piece walks through what is showing up on which earnings calls, how procurement and finance leaders are quantifying the exposure, and what serious corporates are doing about it before the regulator asks.
Where climate risk has already appeared in earnings
The pattern is consistent across resource-intensive sectors. A weather event compresses supply, the price spikes, the cost flows through the income statement, and the analyst on the call asks whether the event is anomalous or structural. Increasingly, the honest answer is the second one.
Cocoa is the cleanest example. The 2023 to 2024 West African harvest fell sharply on the back of erratic rainfall and disease. Cocoa futures more than tripled. Companies with concentrated West African sourcing absorbed the cost; companies with diversified sourcing absorbed less. The exposure was not climate as ESG topic. It was climate as cost of goods.
Coffee follows the same pattern. Brazilian and Vietnamese harvests have moved on weather more sharply across the last several seasons. Roasters with long-tenor supplier relationships and origin diversification have managed the volatility; roasters with spot-market exposure have not. Wheat, sugar, palm oil, beef: the same dynamic in different commodities, a pattern the IPCC AR6 Working Group II report projects will intensify across agricultural systems through mid-century.
What this means: climate risk is no longer a footnote in the 10-K. It is a line item the CFO has to explain on the call.
The three commodity exposures that hit margin first
For most companies with material Scope 3 exposure, three exposures dominate the near-term P&L risk.
- Concentrated single-origin sourcing in a climate-vulnerable region. If your tier-one supply for any material commodity sits in one geography, you have a concentration risk that climate amplifies. Diversification across origins is the obvious hedge, but it takes years to build and requires relationships you cannot acquire by tender.
- Supplier financial fragility under climate stress. Smallholder farmers, who supply a large share of the global cocoa, coffee, and palm oil market, do not carry the balance sheets to absorb yield shocks. When yields collapse, they exit. When they exit, your supply base shrinks, and the surviving suppliers raise prices. The risk is structural, not cyclical.
- Logistics and storage exposure to extreme weather. Hurricane disruptions to Gulf shipping, drought-driven Panama Canal restrictions, flooding in European inland waterways: each of these has moved input costs in the last three years, a pattern documented in Munich Re’s natural catastrophe data. The exposure shows up as a one-quarter event in the financial press but accumulates over time on the cost line.
TCFD and ISSB disclosure changes
The disclosure architecture has now caught up with the risk. The Task Force on Climate-related Financial Disclosures, whose recommendations are now embedded in the ISSB’s IFRS S2 climate standard, requires companies to disclose climate-related risks across physical and transition categories, with quantification where possible.
For physical risk specifically (the climate-linked supply chain risk you are reading about), the disclosure must address both acute exposures (extreme weather events) and chronic exposures (gradual changes in temperature, precipitation, and growing seasons). The disclosure must address the time horizon over which the risk is material, the parts of the value chain exposed, and the financial impact under different scenarios.
The CSRD imposes similar requirements under European law, with double materiality (both financial and impact materiality) embedded in the assessment. The practical effect: your auditors and your investor relations team now need a defensible answer to the climate-linked supply chain risk question, and the answer needs to be quantified.
What procurement and finance can do now
Three actions matter near-term.
Map your exposure. Most companies do not have a clear view of which tier-one and tier-two suppliers sit in which climate-vulnerable geographies. Without the map, you cannot quantify the risk, and without the quantification, you cannot disclose it credibly. The map is the foundation, and World Resources Institute climate risk research provides useful public tooling to start.
Diversify and deepen, in that order. Diversification across origins reduces concentration risk, but the deeper move is to invest in the resilience of the suppliers you already have. Regenerative practices, agroforestry, soil health interventions: these reduce yield volatility under climate stress and protect your input cost trajectory.
Embed the climate spend inside procurement, not outside it. Treating climate risk as a sustainability cost line subordinates it to the ESG budget. Treating it as a procurement and resilience investment puts it in the budget that matters, which is the cost-of-goods budget that the CFO defends quarterly.
Nature-based supply chain investments are the asset class designed for exactly this purpose. They sit inside the value chain, they reduce climate-linked supply risk, they generate verifiable Scope 3 reductions, and they produce the documentation an auditor and a regulator can both test.
If you are quantifying climate-linked supply chain risk in advance of the next earnings cycle or the next disclosure period, the carbon and sustainability experts at Carbon Credit Capital can help you map your exposure and structure a Dual-Value Model response that addresses reduction, resilience, and disclosure-readiness in a single program. Schedule a consultation.
Carbon Footprint
Where should an SME start with a carbon action plan?
More and more small and medium-sized businesses are hearing the same question from their larger customers: What is your carbon footprint? That question now travels down entire supply chains, and it arrives next to tender requirements, certification criteria, and rising customer expectations.
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Carbon Footprint
Insetting vs Offsetting: Which Actually Counts Toward Your Scope 3 Targets
The accounting differences that decide whether your nature investment shows up in inventory, in BVCM, or nowhere at all.
The question reaches a procurement team about three weeks before the next sustainability committee meeting. Someone has read about insetting. Someone else has just signed off on an offset purchase. The CSO wants to know if the two are interchangeable. The answer is no, and the GHG Protocol Land Sector and Removals Standard is the reason why.
This article walks through what each term means at audit-grade specificity, what the standards actually say about how each gets counted, and how to decide which tool fits which target. The insetting vs offsetting question is one of the most-searched in corporate climate strategy, and one of the most poorly answered. By the end of this piece, you should be able to brief a committee on the difference without notes.
The two definitions, in plain English
Offsetting means buying carbon credits generated outside your value chain and retiring them against your residual emissions. The reduction happens somewhere else, financed by you, and the credit is the receipt.
Insetting means investing in emission reductions or removals inside your own value chain, typically with suppliers, where the reduction is directly linked to the products and services you buy. The reduction happens inside the boundary of your Scope 3 inventory, and the accounting treatment is fundamentally different.
The shorthand from the University of Oxford’s Nature-based Insetting Initiative is useful: insetting is what you do with the supply chain you have; offsetting is what you do with the supply chain you do not have.
What the GHG Protocol Land Sector Standard actually says
The GHG Protocol Land Sector and Removals Standard, finalised in 2024 after a multi-year pilot, sets the rules for how land-based emission reductions and removals enter corporate inventories. The Standard distinguishes between inventory accounting (Scope 1, 2, and 3) and project or intervention accounting (a separate methodology for crediting).
For insetting, the practical implication is that supplier-level interventions, when properly measured and attributed, can reduce your Scope 3 category 1 (purchased goods and services) emissions in your inventory. The reduction is not a credit retired against the inventory; it is a lower inventory number, period.
For offsetting, the credit is retired separately. It can be reported as a contribution toward a net-zero claim under the SBTi Beyond Value Chain Mitigation framework or as part of a VCMI Carbon Integrity claim, but it does not lower the inventory number.
A practical consequence: if your Science Based Target requires a 50% absolute reduction in Scope 3 emissions by 2030, insetting moves you toward the target. Offsetting does not. This single point of difference reshapes the procurement decision.
When insetting counts toward Scope 3 (and when it does not)
Insetting counts toward Scope 3 only when several conditions are met:
- The intervention must occur with an entity in your value chain.
- The emissions reduction or removal must be measured against a defensible baseline.
- The reduction must be attributed to your share of that supplier’s output, not double-counted with other buyers.
- It must follow the inventory accounting rules in the GHG Protocol Land Sector Standard, not the project accounting rules used to generate credits.
The most common failure mode is double counting. If your supplier sells the same reduction as a credit on the voluntary market and also reports it to you as a Scope 3 reduction, the math breaks. The Standard requires you to address this risk, typically by purchasing and retiring the supplier-issued credit as part of your inventory or by contractual provisions that prevent the supplier from selling the reduction twice.
When insetting does not count toward Scope 3: when the intervention sits with a supplier you do not buy from, when the baseline is not defensible, when the attribution is unclear, or when the documentation does not survive audit. Those cases default to Beyond Value Chain Mitigation, which is still useful but operates on a different ledger.
The procurement and supplier engagement question
Insetting is harder than offsetting. That is the unfashionable truth most buyers eventually confront. Offsetting is a transaction; insetting is a relationship.
To run an insetting program, you need supplier mapping precise enough to know which farms or facilities sit at which Scope 3 boundary. You need an engagement model that gets suppliers to participate, which usually requires multi-year commitments and shared economics. You need an MRV architecture that measures the right things and produces audit-ready documentation. And you need a contractual structure that prevents double counting and protects both sides.
The trade-off you receive in return is significant. Reductions count against your inventory rather than your residual. Supplier relationships deepen, which protects sourcing continuity. Yield and quality improvements often follow regenerative interventions, which reduces your input cost over time. And the regulatory file, under CSRD, CSDDD, EUDR, and the SBTi FLAG Guidance, is materially stronger.
Choosing the right tool for the right target
A practical decision rule. If your target is a science-based Scope 3 reduction and you operate in a FLAG sector or source FLAG commodities, insetting is the structurally correct tool. If your target is a net-zero claim that includes neutralising hard-to-abate residual emissions outside your value chain, BVCM via high-integrity offsets is the structurally correct tool. Most companies with material Scope 3 exposure need both, in different proportions, sequenced over time.
The sequencing matters. Insetting takes longer to stand up but produces a permanent reduction in the inventory. Offsetting can be transacted faster but does not change the inventory and now sits under tighter claim restrictions. Treat them as complementary tools with different jobs, not as substitutes. The Accountability Framework Initiative and the IUCN Global Standard for Nature-based Solutions both provide useful guardrails for the insetting side, with biodiversity, human rights, and benefit-sharing requirements that go beyond carbon math.
If you are mapping a Scope 3 reduction roadmap and need to scope which interventions count toward your inventory versus which sit in Beyond Value Chain Mitigation, the carbon and sustainability experts at Carbon Credit Capital can help you structure a nature-based supply chain investment program that fits your FLAG exposure, your target architecture, and your audit horizon. Schedule a consultation.
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