# How to estimate interior door installation for a UK job

Plan the scope, check quantities and review an itemised interior door installation estimate in pounds with a matching UK example PDF.

Canonical: https://quicklyestimates.com/en-gb/guides/how-to-estimate-door-installation/
Author: Estimates editorial team
Published: 2026-09-25
Updated: 2026-09-25

Use a measured three pre-hung interior doors example to separate the scope, quantities, product allowances and labour, then review the £1,196.00 illustrative PDF before making your own estimate.

THE SHORT ANSWER

Estimate interior door installation by opening, door type and included finishing work. Separate the door-unit allowance from installation, hardware, casing and painting so a customer can compare like-for-like scopes.

Use this fictional three pre-hung interior doors in York to plan the estimate. The agreed work is: Replace three pre-hung interior doors in existing suitable openings. Include removal, a standard door-unit allowance, installation labour, casing allowance, customer-supplied handle fitting and clean-up. Painting excluded. The matching interior door installation example and PDF (https://quicklyestimates.com/en-gb/samples/door-installation-estimate/) 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. Identify the replacement type

A slab-only replacement and a pre-hung unit involve different assumptions. This example uses pre-hung interior units. Record each opening, swing direction and selected style, then confirm dimensions before purchasing.

2. Check the existing opening

The price assumes suitable existing openings. If correction or resizing is required, list it separately after inspection. A standard installation line should not imply that damaged framing or extensive wall repair is included.

3. Track hardware and casing

Handles, hinges, casing and consumables can be overlooked when only the door price is considered. State which items arrive with the unit and which are supplied by the customer. Avoid charging a separate allowance for something already included in the purchased package.

4. Define the finish at handoff

A fitted door may still need painting or adjacent wall touch-up. Explain exactly what is included in the quoted finish. Record whether disposal of old units and packaging is included so the final handoff is clear.

Calculate the measured lines

The PDF uses 6 separate items. For example, Existing door-unit removal is 3 each × £36.00 = £108.00; Pre-hung interior door allowance is 3 each × £152.00 = £456.00. 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 £1,196.00 . 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

- Confirm sizes, swing directions and styles.
- Verify slab-only versus pre-hung replacement.
- Assign hardware and casing responsibility.
- State painting and wall-repair exclusions.

Outside the base scope: No opening resizing, framing repair, exterior doors, specialty assemblies, painting or surrounding wall refinishing.

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 door installation estimate include the door?

Not always. Label a labour-only quote clearly, or list the door-unit material allowance separately as this sample does.

Can I use one price for all interior doors?

Only when the openings and scope are comparable. Different sizes, conditions, products and finishing requirements should be identified before grouping them.

(https://quicklyestimates.com/en-gb/samples/door-installation-estimate/) Preview of the matching estimate PDF · View the matching example (https://quicklyestimates.com/en-gb/samples/door-installation-estimate/)

FROM SITE NOTES TO AN ITEMISED PDF

Make your own interior door installation 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.

Create an estimate ↗ (https://quicklyestimates.com/en-gb/download/)Explore the interior door installation PDF example → (https://quicklyestimates.com/en-gb/samples/door-installation-estimate/)

Get the app: https://quicklyestimates.com/en-gb/download/
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