THE SHORT ANSWER
Estimate garage door replacement from the measured opening, selected door assembly, track condition and disposal. Treat the motor and damaged framing as separate scope decisions.
Use this fictional one double-width sectional garage door in Brighton to plan the estimate. The agreed work is: Replace one selected sectional garage door in an existing suitable opening. Include old-door removal, panel and track allowance, installation labour, perimeter seal allowance, balance and operation check, and disposal. Motor motor and opening repair excluded. The matching garage door replacement example and PDF shows the same inputs. These quantities and rates are teaching examples; use your own site measurements, product selections, supplier information and labour figures for a customer job.
1. Measure and specify the opening
Record width, height, headroom and the selected door configuration. A nominal two-car label is not enough to order the correct assembly.
2. Inspect supporting conditions
The example assumes suitable framing and room for the selected track. Note any damaged jamb, slab or ceiling obstruction for separate review.
3. Keep the motor decision visible
State whether the existing motor is retained, adjusted or replaced. This example prices a door assembly without a new motor motor.
4. Include safe handoff work
List balance, travel and operation checks by a qualified installer, plus old-door disposal. Assign any required local approval to the actual project.
Calculate the measured lines
The PDF uses 6 separate items. For example, Existing door removal is 1 each × £208.00 = £208.00; Door and track product allowance is 1 set × £1,160.00 = £1,160.00. Check that each unit describes the work being priced: area for a surface, metres for a run, and a count or defined lump sum for a discrete task. A material purchase allowance can differ from the installed quantity when product sizes, cuts or layout require it.
Adding the 6 rounded line amounts gives £2,456.00. The example PDF uses a 0% tax input and no markup; those settings do not determine how to price or treat an actual job. Do not copy the rates as a local price guide.
Check the scope before sending
- Measure opening and clearance.
- Select door and track assembly.
- Inspect jamb and motor assumptions.
- Assign disposal and approval work.
Outside the base scope: No new motor, framing repair, slab correction, electrical work or specialty opening modification.
Confirm the site address, selected products, access, quantities, customer details and validity date. If opening the work reveals a different condition, record the change and update the relevant line before asking the customer to approve the revised work. Preview every page of the PDF so the written scope, line amounts and total tell the same story.
Common questions
Does a garage door price include a motor?
Only if listed. The door and motor motor are separate products and installation scopes.
Can the old tracks stay?
That depends on the selected assembly and site inspection. This example allows a matching door-and-track set.

FROM SITE NOTES TO AN ITEMISED PDF
Make your own garage door replacement estimate.
Enter the scope in Estimates on iPhone or Android, edit each quantity and rate in pounds, add your business and customer details, and review the PDF before sharing it.