# Kitchen sink replacement estimate scope checklist Plan a UK kitchen sink replacement estimate with measured scope, product choices and exclusions. Review 7 fictional GBP lines and the matching £1,036.00 PDF example. Canonical: https://quicklyestimates.com/en-gb/guides/how-to-estimate-kitchen-sink-replacement/ Author: Estimates editorial team Published: 2026-09-25 Updated: 2026-09-25 Estimate kitchen sink replacement by measuring the defined one existing worktop opening, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Birmingham example uses 7 itemised lines totalling £1,036.00; its exact quantities and rates appear in the paired app PDF. THE ESTIMATING ANSWER Estimate kitchen sink replacement by measuring the defined one existing worktop opening, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Birmingham example uses 7 itemised lines totalling £1,036.00; its exact quantities and rates appear in the paired app PDF. The worked job is one existing worktop opening in Birmingham . The written scope is: Replace one sink at an existing worktop opening with a selected compatible sink, new waste connection parts and final seal. Retain the existing tap where suitable. Its matching itemised example (https://quicklyestimates.com/en-gb/samples/kitchen-sink-replacement-estimate/) shows how that description becomes quantities, allowances and a PDF. These figures are fictional inputs for learning the method, so check the real site, specification and supplier or subcontractor costs before quoting. 1. Define the measured job Replace one sink at an existing worktop opening with a selected compatible sink, new waste connection parts and final seal. Retain the existing tap where suitable. Measure the cutout, bowl depth, cabinet clearance and waste alignment before selecting the product. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote. Measure for this job: Measure the cutout, bowl depth, cabinet clearance and waste alignment before selecting the product. Record the measured basis next to the relevant cost lines, since a room count, fitted length and purchased product quantity may each use a different unit. 2. Build a product and labour schedule Separate sink, basket waste and fitting labour; identify whether tap reuse is confirmed. This example has 7 distinct lines, including measure and worktop protection, old sink removal, sink product allowance. Use actual supplier prices and labour inputs for a customer job; the displayed amounts are fictional document inputs. Choose before pricing: Separate sink, basket waste and fitting labour; identify whether tap reuse is confirmed. Keep a named allowance when the selection is open, and replace it once the actual product and delivery terms are known. 3. Sequence the work and handoffs Confirm the worktop material and shutoff access before the old sink is lifted. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote. Plan the handoffs: Confirm the worktop material and shutoff access before the old sink is lifted. State which stage needs access or inspection before the next can begin, especially if a concealed condition might stop the work. 4. Set a change boundary A cutout that does not fit or damaged worktop edge changes the base scope. The example excludes worktop replacement, new tap purchase or concealed cabinet repair. Record the discovery, agree the revised work and update the estimate before adding it to the job. Change trigger: A cutout that does not fit or damaged worktop edge changes the base scope. If this happens, write down the revised quantity and responsibility before adding an item to the customer estimate. Worked project calculation The paired PDF has 7 cost lines. For example, Measure and worktop protection is 1 lump sum × £76.00 = £76.00; Old sink removal is 1 each × £104.00 = £104.00. Each amount is the stated quantity multiplied by its unit rate. Recheck whether a line describes installed work, a material purchase allowance or a distinct visit before changing its quantity. Kitchen sink replacement example — GBP, fictional inputs Work item | Quantity | Unit rate | Amount | Measure and worktop protection | 1 lump sum | £76.00 | £76.00 | Old sink removal | 1 each | £104.00 | £104.00 | Sink product allowance | 1 each | £368.00 | £368.00 | Waste and connector allowance | 1 set | £92.00 | £92.00 | Sink fitting and seal | 1 each | £208.00 | £208.00 | Drain reconnection and test | 1 lump sum | £124.00 | £124.00 | Disposal and clean-up | 1 lump sum | £64.00 | £64.00 | Illustrative total | £1,036.00 | Adding the 7 exact line amounts gives £1,036.00 . The PDF uses a 0% tax input and no markup solely to display this arithmetic. Decide the appropriate tax, overhead and profit treatment for an actual job; the fictional rates are not local averages or price recommendations. Scope and price boundaries Replace one sink at an existing worktop opening with a selected compatible sink, new waste connection parts and final seal. Retain the existing tap where suitable. Outside this example: No worktop replacement, new tap purchase or concealed cabinet repair. The role in this brief is refurbishment contractor. Confirm who supplies the selected products, makes the site safe, removes waste and signs off the work. Where opening up reveals a different condition, document it and issue a revised scope and price rather than silently extending the base estimate. Also check access, drying or curing time, and the client handoff described in the work sequence. Before you send - Measure the cutout, bowl depth, cabinet clearance and waste alignment before selecting the product. - Separate sink, basket waste and fitting labour; identify whether tap reuse is confirmed. - Confirm the worktop material and shutoff access before the old sink is lifted. - A cutout that does not fit or damaged worktop edge changes the base scope. Compare the written scope with every line in the kitchen sink replacement PDF example (https://quicklyestimates.com/en-gb/samples/kitchen-sink-replacement-estimate/). The preview below is the first page of the actual app export; open the PDF to inspect its full scope, notes and amounts. (https://quicklyestimates.com/assets/guides/kitchen-sink-replacement/en-GB/estimate.pdf) Questions about this job Which quantity controls this kitchen sink replacement estimate? Measure the cutout, bowl depth, cabinet clearance and waste alignment before selecting the product. When should this kitchen sink replacement quote be revised? A cutout that does not fit or damaged worktop edge changes the base scope. No worktop replacement, new tap purchase or concealed cabinet repair. FROM SITE NOTES TO AN ITEMISED PDF Build your own kitchen sink replacement estimate Enter the project boundary and your measured lines in Estimates on iPhone or Android. Edit the fictional quantities and rates, add the actual business and client details, then inspect the PDF before sharing it. Create an estimate ↗ (https://quicklyestimates.com/en-gb/download/)Open the worked example → (https://quicklyestimates.com/en-gb/samples/kitchen-sink-replacement-estimate/) Get the app: https://quicklyestimates.com/en-gb/download/ App Store (iPhone): https://apps.apple.com/app/id6740389403 Google Play (Android): https://play.google.com/store/apps/details?id=com.uzel.contractorplus