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You run the site, chase the materials, sort the labour, and then price the next job when everyone has gone home. There is no QS in the office to hand it to, so the measure gets rushed, and a rushed measure is where the margin leaks. One line left off is money out of your own pocket once you're on site.
We are your estimating team, without the payroll. Send the drawings, we measure the whole job to NRM2 and price it on real UK rates, and you get a clean estimate you can bid from and hand to the client. You get your evenings back.
Price the job right without a QS on the payroll
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| Prepared for | Mr & Mrs Sample |
| Prepared by | My Project Estimating |
| Reference | MPE-2026-014 |
| Date | 4 July 2026 |
| Valid for | 90 days from date of issue |
Contents
- 1. Executive Summary
- 2. Basis of Estimate
- 3. Drawings & Information Relied Upon
- 4. Pricing Summary by Stage
- 5. Preliminaries
- 6. Detailed Stage Breakdown
- 7. PC Sums & Provisional Sums
- 8. Value Engineering Options
- 9. Assumptions
- 10. Exclusions
- 11. Qualifications & Site Verification
- 12. Stage Payment Schedule
- 13. Next Steps
- 14. Standard Terms
1Executive Summary
This report sets out our estimate for the construction of a single storey rear extension at 14 Oakfield Road, London SW00 0AA, providing approximately 42 m² additional floor area. It has been prepared for Mr & Mrs Sample on the basis of the drawings and information listed in Section 2.
The net total of £128,788.03 includes overheads and profit at 8% and a construction contingency at 5%. With VAT at 20%, the total is £154,545.64.
The estimate carries PC and provisional sums totalling £27,414.00 for items not yet finally selected (Section 7). We have also set out value engineering options in Section 8 that could reduce the cost by up to £7,150.00 if adopted.
This is an estimate rather than a fixed-price tender. It should be read together with the assumptions, exclusions and qualifications, which define exactly what is and is not included. All dimensions must be verified on site before ordering or starting work.
2Basis of Estimate
This estimate has been prepared on the following basis. Where information was not available, a reasonable allowance has been made and identified as a PC or provisional sum.
| Project | Single Storey Rear Extension, 42 m² additional floor area |
| Location | 14 Oakfield Road, London SW00 0AA |
| Scope | Construction of the extension including groundworks, structure, roof, external envelope, first and second fix, finishes, kitchen and sanitaryware installation, and associated external works. |
| Measurement | Quantities measured from the listed drawings in accordance with NRM2 principles. |
| Pricing | Current UK market labour and material rates at the date of issue. |
| Programme | Single continuous build assumed. No allowance for phasing or accelerated working. |
| Contract | Assumed a standard domestic building contract. Not yet agreed. |
If any of the above changes, in particular a drawing revision or a change of specification, the estimate should be revisited.
3Drawings & Information Relied Upon
This estimate is based on the following drawings and their revisions. Pricing relates to these revisions only. A later revision may change quantities and cost.
| Drawing | Title | Rev | Originator |
|---|---|---|---|
| A-100 | Existing plans and elevations | Rev C | Sample Architects Ltd |
| A-101 | Proposed ground floor plan | Rev D | Sample Architects Ltd |
| A-102 | Proposed elevations and section | Rev D | Sample Architects Ltd |
| A-200 | Proposed roof plan | Rev B | Sample Architects Ltd |
| S-01 | Structural layout and beam schedule | Rev B | Consulting Structural Engineer |
| S-02 | Foundation details | Rev A | Consulting Structural Engineer |
4Pricing Summary by Stage
The table below summarises the net cost of each stage of the works, excluding VAT. Preliminaries are shown in Section 5 and a full breakdown of every stage follows in Section 6.
| Stage | Net (excl. VAT) |
|---|---|
| Preliminaries | £17,640.00 |
| Groundworks & Foundations | £10,452.40 |
| Superstructure & Walls | £21,350.00 |
| Roofing | £9,976.00 |
| Windows & External Doors | £8,020.00 |
| First Fix M&E | £6,478.00 |
| Internal Finishes | £15,585.30 |
| Kitchen & Sanitaryware | £17,550.00 |
| External Works | £6,920.00 |
| Net works | £113,971.70 |
| Overheads & profit @ 8% | £9,117.74 |
| Construction contingency @ 5% | £5,698.59 |
| Net total (excl. VAT) | £128,788.03 |
| VAT @ 20% | £25,757.61 |
5Preliminaries
Preliminaries cover the cost of running the project that is not tied to a single trade, site set-up, management, access, welfare, temporary works and general attendance. They are listed as items and priced for a build of this size and duration.
| Item | Qty | Unit | Rate | Net |
|---|---|---|---|---|
| Site set-up, welfare unit and temporary fencing | 1 | item | £2,850.00 | £2,850.00 |
| Scaffolding to rear elevation, 12 week hire | 1 | item | £3,420.00 | £3,420.00 |
| Skip hire and waste removal, 6 x 8yd | 6 | each | £285.00 | £1,710.00 |
| Site management and supervision | 12 | week | £640.00 | £7,680.00 |
| Temporary services, protection and general attendance | 1 | item | £1,980.00 | £1,980.00 |
| Total preliminaries | £17,640.00 | |||
Preliminaries are time-related. A longer programme, or a stop-start programme, would increase this figure.
6Detailed Stage Breakdown
Each stage is broken down into its works. Under every work, costs are grouped into materials, labour and plant. Rates are net of VAT and reflect current UK market prices.
| Description | Qty | Unit | Rate | Net |
|---|---|---|---|---|
| Labour | ||||
| Reduce level dig and cart away spoil | 38 | m3 | £46.50 | £1,767.00 |
| Excavate for trench fill foundations | 22.4 | m3 | £52.00 | £1,164.80 |
| Plant | ||||
| 3 Tonne excavator hire | 3 | day | £195.00 | £585.00 |
| Description | Qty | Unit | Rate | Net |
|---|---|---|---|---|
| Material | ||||
| Ready-mix C25 concrete | 22.4 | m3 | £142.00 | £3,180.80 |
| Sand blinding and 1200g DPM | 42 | m2 | £9.80 | £411.60 |
| 100mm PIR floor insulation | 42 | m2 | £21.40 | £898.80 |
| Labour | ||||
| Pour foundations, lay and power-float slab | 42 | m2 | £58.20 | £2,444.40 |
Remaining stages (Superstructure, Roofing, Windows, M&E, Finishes, Kitchen, External Works) follow in the full document, each priced the same way.
7PC Sums & Provisional Sums
The items below are allowances, not fixed prices. A Prime Cost (PC) sum is money set aside for materials or fittings not yet finally selected. A provisional sum is money set aside for work that cannot yet be precisely measured.
| Item | Type | Allowance (excl. VAT) |
|---|---|---|
| Facing bricks to match existing | PC Sum | £2,304.00 |
| Rooflights (2 no.) | PC Sum | £2,500.00 |
| Aluminium bi-fold doors, 3.6m | PC Sum | £4,200.00 |
| Windows to extension (4 no.) | PC Sum | £2,720.00 |
| Floor finish supply | PC Sum | £1,890.00 |
| Kitchen units and worktops | PC Sum | £12,000.00 |
| Sanitaryware to WC | PC Sum | £1,800.00 |
| Total allowances | £27,414.00 | |
8Value Engineering Options
The following options could reduce the cost without changing the size or layout of the extension. They are optional. Each shows the saving against the net total.
| Option | Area | Saving |
|---|---|---|
| Single-ply membrane roof to a high-performance felt system Proven felt build-up. Slightly shorter guarantee period. | Roofing | −£1,260.00 |
| Aluminium bi-fold to uPVC French doors with side lights Lower-cost door set. Reduces the slimline appearance. | Windows | −£2,350.00 |
| Client-supplied kitchen Client procures kitchen directly. MPE installs only. | Kitchen | −£2,000.00 |
| Maximum saving if all options adopted | −£7,150.00 | |
Standard Terms
This estimate is issued as an estimate of likely cost based on the information available at the date of issue and is not a fixed-price tender or an offer to contract. Prices are held for 90 days from the date of issue. Quantities are measured from the drawings listed and must be verified on site before ordering or commencing works. PC and provisional sums are allowances only and are reconciled against actual cost.
Company No. 11255002
info@myprojectestimating.co.uk • myprojectestimating.co.uk
What you get back
A full estimate you can bid from and hand to the client, everything laid out clear.
Send the drawings, get your evenings back
Send your drawings
Your plans, sketches or CAD files, whatever you have.
We measure and price it
The whole job measured to NRM2 and priced on real UK rates.
You get your estimate
A clean, itemised estimate you can bid from and hand to the client.
Whole-job pricing without the overhead
Get your evenings back
We take the takeoff off you so you can run the job.
Nothing missed
Every element to NRM2 so nothing slips through.
Protect your margin
Bid a number you can stand behind, not one cobbled together at night.
No QS on the payroll
Whole-job pricing without the overhead.
Need more than the estimate? We also handle full cost planning and a complete bill of quantities, all measured to the same standard.
Whatever you need priced for tender
We measure it off your drawings to NRM2 and price it on real UK rates. Send your drawings and get a number you can bid from, whether it is the whole job or a single package.
Construction Estimating
The whole job priced, ready to bid. Every element to NRM2, nothing missed, nothing padded.
Cost Planning
Keep the budget straight from the start, with a clear breakdown across structure, finishes and services.
Quantity Takeoff
Exact quantities for every trade off your drawings, so you price the job accurately for tender.
BOQ Preparation
A full bill of quantities to NRM2, ready for tender and clear enough to bid the job from.
FAQs for small and medium builders
The questions builders ask most before they send us a job, answered plain.
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Send the drawings, get your evenings back.
Send us your drawings and get a fixed fee quote back, with the whole job measured to NRM2 and delivered to your deadline.