Future-Proofing Your Property for EV Charging: Infrastructure Planning Guide
Installing one or two EV chargers today is relatively straightforward. The challenge comes when demand grows — and it will. Industry projections indicate that by 2030, over 50 per cent of cars on UK roads will be electric or plug-in hybrid. For property owners across Manchester, whether you manage a commercial building, a residential development or a portfolio of rental properties, the question is not whether you will need more EV charging capacity in the future, but how much and how soon.
Future-proofing means installing the underlying infrastructure now — cable routes, supply capacity, containment and distribution — so that adding more chargers in the future is fast, affordable and minimally disruptive. Getting this right at the outset can save tens of thousands of pounds compared to retrofitting infrastructure later.
Why Future-Proofing Matters
The cost of installing EV charging infrastructure breaks down into two categories: the charger units themselves and the supporting electrical infrastructure. The charger units are the visible, relatively affordable part. The infrastructure — cable routes, distribution boards, supply connections and civil works — is where the real cost sits, and where future-proofing delivers the greatest return.
The maths are compelling:
- Installing a cable route (duct and containment) across a car park during initial construction or renovation costs approximately £20 to £40 per metre.
- Retrofitting the same cable route later — excavating tarmac, laying duct, reinstating the surface — costs £80 to £150 per metre.
- A typical 50-metre cable route across a commercial car park: £1,000–£2,000 if done upfront vs. £4,000–£7,500 if retrofitted.
Building Regulations Part S: The Minimum Standard
Since June 2022, Building Regulations Approved Document S sets minimum requirements for EV charging infrastructure in new buildings:
New residential buildings:
- Every dwelling with an associated parking space must have an EV charge point installed.
- At least one EV charge point must be installed.
- Cable routes must be provided for one in five of the total parking spaces.
- At least one EV charge point must be installed.
- Cable routes for one in five of total parking spaces.
What Future-Proofing Looks Like in Practice
1. Cable Routes and Containment
The single most valuable future-proofing measure is installing cable routes — ducts, trunking and containment — from the electrical distribution point to every parking space that might need a charger in the future. Even if you only install chargers in five spaces today, running empty ducts to another twenty spaces costs very little during construction but saves thousands later.
What to install:
- Underground duct — 50 mm or 63 mm HDPE duct from the distribution board location to each future charger position. Lay ducts in trenches during groundworks, before tarmac or paving is laid.
- Draw cords — Install draw cords (pull ropes) inside each duct so cables can be pulled through easily in the future without excavation.
- Junction chambers — Install access chambers at key points along the duct route for future cable pulling and jointing.
- Wall-mounted containment — For indoor car parks or buildings, install cable tray or trunking sized for future expansion.
2. Electrical Supply Sizing
When applying to the DNO for a new supply or upgrade, size the connection for your full future EV charging demand, not just your day-one requirement. The cost difference between a 200 A and a 400 A supply connection at the time of initial installation is far less than the cost of upgrading from 200 A to 400 A later.
Planning your supply capacity:
| Scenario | Day-One Requirement | Future Requirement | Recommended Supply | |---|---|---|---| | Small office (20 spaces) | 4 x 7 kW chargers (28 kW) | 10 x 7 kW chargers (70 kW) | Size for 70 kW + load management | | Medium commercial (50 spaces) | 10 x 7 kW (70 kW) | 25 x 7 kW (175 kW) | Size for 175 kW + load management | | Large site (200 spaces) | 20 x 7 kW (140 kW) | 80 x 7 kW (560 kW) | Dedicated EV supply + load management | | Residential development (50 units) | 20 x 7 kW (140 kW) | 50 x 7 kW (350 kW) | Dedicated EV supply + load management |
Important: Load management dramatically reduces the actual supply capacity needed. With dynamic load management, 25 chargers rated at 7 kW each (175 kW total) may only require 80–100 kW of actual supply capacity, because not all vehicles charge simultaneously at full rate. Factor this into your supply sizing calculations.
3. Distribution Board Provision
Install a distribution board (or sub-distribution board) dedicated to EV charging with enough spare ways for future expansion. If you need six circuits today, install a board with eighteen or twenty-four ways. The cost of a larger board is marginally more than a smaller one, but adding a second board later requires significant additional work.
Specification guidance:
- Minimum 30 per cent spare ways beyond day-one requirements.
- Type A or Type B RCD protection (increasingly required for EV charging circuits).
- Adequate busbar rating for future total load.
- Located in an accessible position for future cable additions.
4. Transformer and Substation Provision
For larger developments — typically those requiring more than 150 kW of EV charging capacity — consider whether a dedicated transformer or substation for EV charging should be included in the development. This is particularly relevant for:
- Large residential developments (50+ units).
- Commercial developments with 100+ parking spaces.
- Mixed-use developments where EV charging demand will grow significantly.
- Fleet depots and logistics centres.
5. Smart Infrastructure
Future-proofing is not just about cables and capacity. The digital infrastructure matters too:
- Network connectivity — Ensure reliable WiFi or 4G/5G coverage at all charger locations. Smart chargers require network connectivity for load management, billing, monitoring and firmware updates.
- Back-end platform — Choose a charger manufacturer and management platform that supports future expansion. Avoid proprietary systems that lock you into a single vendor.
- Payment infrastructure — If public or visitor charging is planned, ensure the back-end supports contactless payment (mandatory for new public charge points above 8 kW since January 2024).
- Data connectivity — Install CAT6 or fibre cabling to charger locations alongside power cables. This provides a reliable wired network connection as a backup to wireless.
Future-Proofing for Different Property Types
Commercial Offices
Office buildings should plan for 20 to 30 per cent of parking spaces to have active chargers by 2030, with cable routes to 50 per cent or more. Employee EV adoption will accelerate as lease cycles turn over and company car schemes increasingly favour electric vehicles.
Key actions:
- Install cable routes to at least 50 per cent of parking spaces.
- Size the electrical supply for 30 per cent simultaneous active chargers with load management.
- Choose chargers with employee billing capability.
- Consider solar panels to offset charging costs.
Residential Developments
Every new home with a parking space must have a charger under Part S. For existing developments, plan for 100 per cent provision over time. EV ownership among residents of new-build developments in Manchester is already significantly above the national average.
Key actions:
- Install chargers in every space with dedicated parking (Part S requirement for new builds).
- For communal parking, provide cable routes to every space and install a load-managed system.
- Ensure the communal electrical supply is sized for full future demand.
- Implement billing and access control from day one.
Retail and Hospitality
Customer-facing EV charging is a revenue opportunity and a footfall driver. Research consistently shows that EV drivers actively choose destinations with charging facilities, particularly for visits of one to four hours.
Key actions:
- Start with rapid or fast chargers (22–50 kW) in prominent positions.
- Provide cable routes for expansion as demand grows.
- Implement pay-per-use charging from day one.
- Consider prominent branding and signage to attract EV drivers.
Industrial and Logistics
Fleet electrification is accelerating. Logistics companies, delivery operators and service businesses are transitioning fleets to electric vehicles. Depot charging requires careful planning due to the concentrated demand pattern — many vehicles charging simultaneously overnight.
Key actions:
- Plan for 100 per cent fleet electrification within 5 to 10 years.
- Size the supply for full fleet charging with load management and overnight scheduling.
- Consider on-site battery storage to reduce peak demand charges and supply requirements.
- Investigate time-of-use tariffs optimised for overnight charging.
Manchester and Greater Manchester Context
- Electricity North West network investment — ENW is investing heavily in network reinforcement across Greater Manchester to support the transition to electric vehicles. Areas with known capacity constraints are being prioritised for upgrade.
- Greater Manchester Transport Strategy 2040 — The Combined Authority's transport strategy includes targets for comprehensive EV charging coverage across the region. Properties that contribute to this vision may benefit from future policy support.
- Local planning policies — Manchester City Council and several Greater Manchester district councils are strengthening planning conditions around EV charging provision for new developments. Future-proofing beyond Part S minimums helps secure planning approval.
- Air quality targets — Greater Manchester's air quality objectives create additional momentum for fleet electrification and workplace charging provision.
The Cost of Not Future-Proofing
The financial case is clear. For a typical 50-space commercial car park:
| Approach | Estimated Cost | |---|---| | Install 10 chargers now, full duct provision for 50 spaces | £18,000–£25,000 | | Install 10 chargers now, no future provision. Retrofit 15 more in 3 years | £12,000 now + £35,000–£50,000 later = £47,000–£62,000 |
Future-proofing during the initial installation saves 40 to 60 per cent compared to retrofitting. The larger the site, the greater the savings.
Get Expert Future-Proofing Advice
Planning EV charging infrastructure that works today and scales for tomorrow requires electrical engineering expertise and a clear understanding of your property's long-term needs. Our NICEIC approved team designs and installs future-proofed EV charging systems across Manchester and Greater Manchester.
Contact us for a free site assessment:
- Call: 0161 706 1360 (Monday–Friday, 8 AM–5 PM)
- Email: Info@manchestercompliance.co.uk
- Address: 25 Holden Clough Drive, Ashton-under-Lyne, OL7 9TH