Land acquisition and due diligence

Once the search has produced a short list, the developer must secure land without committing to a site that later proves unbuildable. Data centre parcels are large, often assembled from several owners, and their value depends on facts that take months to establish: whether the land can be zoned, whether power and water can reach it, what lies under its surface, and what rights others hold over it. This lesson covers the agreements used to secure land, title and survey, environmental and physical investigations, utility and access confirmation, yield studies that estimate how much capacity a parcel can hold, and the planning of the due diligence period itself.

Securing the land

Developers rarely buy land outright at the start. The usual tools are:

• Option agreements: the developer pays the owner for the exclusive right to buy the land at an agreed price within a set period (often one to three years, sometimes with paid extensions). If the site fails, the developer walks away, losing only the option payments.
• Conditional agreements of purchase and sale: the purchase is binding only if conditions are satisfied or waived by set dates, typically a due diligence condition (60 to 180 days), a rezoning or approvals condition, and sometimes a power condition tied to a utility commitment.
• Ground leases: long leases (often 50 to 99 years) where owners will not sell, or where public bodies, utilities or Indigenous communities prefer to retain ownership.
• Assemblies: where a site requires several parcels, each is secured under its own agreement, ideally with conditions that let the developer proceed only if the whole assembly closes.

Prices for data centre land have risen sharply in active markets, and owners near transmission lines or substations increasingly know their land's value. Agreements often include price escalators for extensions, payments released in stages as conditions are satisfied, and provisions on who pays for rezoning applications and studies. The agreement also needs to give the developer access to the land for surveys, drilling and environmental sampling during the due diligence period, with obligations to restore it.

Some Canadian sites involve additional parties: Crown land requires provincial disposition (sale or lease) through the relevant ministry; reserve lands and lands subject to Indigenous claims require partnership or agreements with the First Nation; and agricultural land in some provinces is protected (for example, Quebec's Commission de protection du territoire agricole must authorize non-agricultural use in the agricultural zone, and British Columbia's Agricultural Land Reserve is similarly protected).

Title and survey

A title search confirms who owns the land and what rights others hold over it. The issues that matter most for data centres are:

• Easements: rights of way for transmission lines, pipelines, roads and drainage. A high-voltage line crossing the middle of a parcel can remove a strip 30 to 60 m wide from use and restrict building near it, while a gas pipeline easement limits grading, crossings and heavy equipment.
• Restrictive covenants: private restrictions on use, height or building materials, sometimes registered decades ago by a developer of a business park.
• Subsurface and mineral rights: in parts of Canada, especially the Prairies, mineral rights may be held separately from the surface, by the Crown or by private holders, who may have rights of access for exploration and production.
• Leases and occupancies: farm leases, billboard leases and telecommunications towers that must be terminated or relocated.

A legal survey by an Ontario Land Surveyor (or the equivalent in other provinces) fixes boundaries and shows easements, encroachments and improvements; a reference plan is often needed to divide or consolidate parcels. Title insurance is available in Canada and increasingly used in commercial transactions, though lawyers' title opinions remain common.

Environmental site assessment

Contamination can make a site expensive or impossible to use, and in many jurisdictions an owner can be liable for cleaning up contamination it did not cause. Environmental due diligence proceeds in phases:

• A Phase One Environmental Site Assessment, following CSA Z768 or, in Ontario, the regulation for records of site condition, reviews historical records, aerial photographs, regulatory databases and a site visit to identify areas of potential environmental concern.
• A Phase Two (or Phase II) assessment samples soil, groundwater and sometimes soil vapour where the first phase found concerns, such as former fuel tanks, landfills, industrial uses or pesticide storage.
• If contamination is confirmed, remediation or risk assessment may be needed. In Ontario, a Record of Site Condition is required when the use of a property changes to a more sensitive use, such as from industrial to residential; a change from agricultural to industrial use does not normally require one, but lenders and buyers may still require clean-up.

Former power plants, factories and mines can make excellent data centre sites because they bring transmission interconnections, water rights and industrial zoning, but they need especially careful environmental assessment of ash ponds, fuel storage and buried structures.

Physical investigations

• Geotechnical investigation: boreholes and test pits establish soil and rock conditions, groundwater levels, bearing capacity and seismic site class, which govern foundation design and earthworks (DCE-430). Soft clays, karst (limestone prone to sinkholes), high groundwater and expansive soils add cost and risk.
• Topographic survey and grading study: data centre buildings need large flat pads; a sloping site may require extensive cut and fill and retaining walls.
• Floodplain and drainage: confirm flood mapping, local drainage patterns and the outlet for stormwater (Lesson 7).
• Natural heritage: wetland evaluation, species at risk surveys and habitat assessment, timed for the right seasons (Lesson 5). Conservation authority regulated areas around watercourses and wetlands limit development.
• Archaeology: in Ontario, a Stage 1 archaeological assessment (background study) and usually a Stage 2 field survey are needed for development on land with archaeological potential, with Stages 3 and 4 if significant sites are found.

Seasonal timing matters: some species surveys can only be done in spring or early summer, and archaeological field surveys require ploughed fields or suitable ground conditions, so a due diligence plan that starts in late autumn can lose six months waiting for the field season.

Utilities and access

Physical suitability means little without services:

• Power: a formal request to the utility or system operator, leading to a feasibility or system impact study that states available capacity, required upgrades, costs and dates (DCE-420). For large loads this can take months and require deposits.
• Water and wastewater: written confirmation from the municipality or utility of available capacity, or a hydrogeological study for wells (Lesson 7).
• Fibre: confirmation from carriers of available routes, diverse entrances and construction costs.
• Road access: approvals for new entrances and the capacity of roads for construction traffic and heavy deliveries such as transformers and generators (Lesson 6).
• Gas: where on-site generation is planned, capacity on nearby pipelines.

Yield studies

A yield study estimates how much data centre capacity a parcel can support once constraints are removed. Starting from the gross area, it subtracts wetlands and buffers, floodplains, easements, setbacks, road widenings, stormwater facilities and the utility substation, then applies a building coverage and a power density to the net developable area.

# Yield study for a 60 ha parcel: how much IT capacity can it support?
gross_ha = 60.0
constraints_ha = {"wetland and buffer": 4.5, "floodplain": 3.0, "transmission easement": 2.2, "road widening and setbacks": 3.8,
                  "stormwater ponds": 4.0, "substation": 2.0}
net_ha = gross_ha - sum(constraints_ha.values())
print(f"gross {gross_ha:.1f} ha; constraints {sum(constraints_ha.values()):.1f} ha; net developable {net_ha:.1f} ha")

# Of the net area, buildings cover 40%; the rest is generators, cooling yards, roads and parking.
coverage = 0.40
building_m2 = net_ha * 10000 * coverage
for label, w_per_m2 in (("air-cooled, 1.5 kW/m2 of building", 1500), ("liquid-cooled AI, 3.0 kW/m2 of building", 3000)):
    it_mw = building_m2 * w_per_m2 / 1e6
    print(f"{label}: about {it_mw:.0f} MW of IT capacity on {building_m2 / 1e4:.1f} ha of building footprint (single storey)")

pue = 1.25
print(f"utility demand for the AI case at PUE {pue}: about {building_m2 * 3000 / 1e6 * pue:.0f} MW")

gross 60.0 ha; constraints 19.5 ha; net developable 40.5 ha
air-cooled, 1.5 kW/m2 of building: about 243 MW of IT capacity on 16.2 ha of building footprint (single storey)
liquid-cooled AI, 3.0 kW/m2 of building: about 486 MW of IT capacity on 16.2 ha of building footprint (single storey)
utility demand for the AI case at PUE 1.25: about 608 MW

Constraints remove about a third of this parcel. The capacity estimate depends heavily on the cooling technology: liquid-cooled AI halls pack roughly twice the power into the same footprint, so the binding constraint shifts from land to power, here more than 600 MW of utility demand, far beyond what most single connections can supply. Multi-storey buildings, increasingly common where land is scarce, raise capacity further. A yield study also checks that the layout can meet noise limits at property lines (Lesson 6) and that generator and fuel areas satisfy fire separation requirements.

Planning the due diligence period

Due diligence is a project in itself, with a budget, schedule and risk register. Its order matters: investigations that can reveal fatal flaws cheaply come first.

Typical red flags that end or reprice a deal include: no credible power date; a major easement or pipeline that splits the site; significant contamination; wetlands or species habitat covering much of the parcel; a floodplain designation; unresolvable access; an archaeological site of high significance; strong organized local opposition with a council that has signalled it will not rezone; and an owner unable to give clean title.