Before comparing home-charger quotes, write a short brief: exact vehicle, usual parking place, arrival and departure times, and any unusual driving days. Ask every provider to price the same professionally assessed outcome. A quote that installs equipment at a different location or serves a different use pattern is an alternative scope.
Ask what the assessment actually covers
DOE's Alternative Fuels Data Center explains that qualified electrical help is needed to establish capacity and that state and local installation requirements apply. Ask who supplies the assessment, determines applicable approvals and documents completion. This checklist supplies no electrical sizing, testing, wiring or outlet-use instructions.
Free seven-part scope checklist
Copy the following rows with columns for Offer A, Offer B, evidence and unanswered question. A blank answer is an unknown, not an included service.
- Vehicle and parking: exact model, compatibility confirmation, location and provider-assessed cable reach.
- Equipment: accepted model, who supplies it, delivery, returns and any recurring service charges.
- Assessment: the report reference and charging-use assumptions supporting the proposed option.
- Installation quantity: included provider-defined route units, access scope and the written rule for extra work.
- Supporting work: fixed prices versus allowances, restoration and costs outside the installer agreement.
- Permissions and timing: responsible parties, applicable applications, inspections and external dependencies.
- Handover: accepted equipment, required final records, provider demonstration, warranty and service contacts.
Check a quantity adjustment without paying twice
Original fictional example: an installed $2,400 baseline includes 18 billable route feet. The provider later confirms 45 feet and a written $19 charge per additional foot for the same defined work. Extra quantity is 45 − 18 = 27 feet, so the incremental charge is 27 × $19 = $513. The revised analysis is $2,913 before any other changes.
Charging all 45 feet again would count the included quantity twice. Ask the provider to state the revised total and which work it fixes. These numbers are teaching inputs, not national prices, an installation route or evidence that your home needs this work.
Check the actual vehicle and product, not a sales category
The EPA home-charging guide identifies vehicle connectors, charging needs and parking considerations. Give the provider the actual model documents and request compatibility confirmation. Do not assume an adapter or a similar connector name establishes suitability for the proposed equipment.
ENERGY STAR's charger page offers certified-product listings and describes connected features on some models. Record which features the actual offer includes. An app label does not answer what happens without internet, whether a subscription applies or who can access charging data.
Keep the next question specific
Instead of asking only whether installation is included, ask: 'Which route quantity is fixed?', 'Who pays the application fee?', or 'Which document confirms completion?' Keep the original offer and any owner calculations separate until the provider issues a written revision.
Use the free quote comparison tool for general scope. The EV Charger Installation Quote Planner adds the vehicle/window brief, four checked cases, six reusable sheets, 30 fillable fields and two completed records across 25 pages for £7.99 GBP. Its other cases address energy boundaries, allowance replacement and whole-house tariff effects.
Primary links retrieved October 29, 2026. All numerical examples are invented. No actual customer outcome, guaranteed charging speed, market-price range, incentive eligibility or validated purchase demand is claimed. Qualified providers and relevant authorities must determine the actual installation and permissions.