Know the cost before you commit to the price.
Win the job then lose money on it, and the shortfall is yours. We break the whole job down and price it to NRM2 on real UK rates, so you set the budget on real numbers, not a guess. Send your drawings today, get a fixed fee quote back, full cost plan delivered to your deadline.
Set the budget before you're committed on price
A cost plan is a full breakdown of what the job will cost, worked out from your drawings and priced to NRM2 on real UK rates. Unlike a one-off estimate, we keep it up to date as the drawings develop, so the budget stays right. It breaks the whole job down by element, structure, finishes, services and external works, so you can see where the money goes and where you've room to move before you commit to a price.
Works from what you have
Your drawings and any estimate you already have, whatever stage the design is at.
Priced element by element
Every building element priced to NRM2 on real UK rates.
Kept up to date
The numbers move with the drawings, so costs drifting get flagged before they eat your margin.
You can carry the same numbers from a construction estimate through to a full cost plan, a quantity takeoff and a bill of quantities, without losing consistency.
A clear cost plan you can build a bid on
Every cost plan is laid out clear and priced to NRM2, so you and anyone pricing with you work from the same numbers. Built for contractors and subcontractors who need the budget straight before the job starts.
See exactly what lands in your inbox
The real estimate, open on screen, no email needed. Your cost plan follows the same layout, broken down by element.
| 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 receive
A full cost breakdown with subtotals, VAT and total project value, laid out so you can build a bid on it and keep the budget straight as the job develops.
Set a budget the job can actually be built to
Win the job then lose money on it, and the shortfall is yours. We break the whole job down and price it to NRM2 on real UK rates, so you set the budget on real numbers and know it holds before you commit.
Budget that holds
Priced to NRM2 on real UK rates, so the budget you set is one the job can actually be built to.
Nothing slips through
Every element measured off your drawings, so no cost is left out to surprise you on site.
See where the money goes
The whole job broken down by element, so you know exactly what sits behind every figure.
Catch overruns early
We flag where costs are drifting before they eat your margin, not after you're on site.
Kept up to date
As the drawings develop, the cost plan moves with them, so your budget never goes stale.
25+ years, contractor-side
Your job is priced by a team with 25+ years on UK sites who know how a real job gets built.
From your drawings to a budget you can build to
Send your drawings
Send us your drawings, sketches or specs, whatever stage they're at.
We measure and price it
We take off the whole job and price it to NRM2 on real UK rates, costs grouped by element.
Delivered to your deadline
You get the cost plan ready to bid from, before your deadline.
Built for UK contractors and subcontractors
No two jobs price the same, so we don't guess. Whatever you're pricing, we break the whole job down to NRM2 on real UK rates, so you set a budget you can build to and bid from.
Main Contractors
Setting the budget for a full tender? We break the whole job down to NRM2, so you commit to a number the job can be built to.
Subcontractors
Pricing your package and need the budget straight? We cost your scope off the drawings, so you bid keen without getting caught short.
Small & Medium Builders
No QS in the office? You don't need one. Send the drawings, we cost the whole job, and you get a budget you can stand behind.
Trades
Quoting a client and want the budget right? We turn your drawings into a clear, priced breakdown you can stand behind.
Related estimating and cost planning
Got the budget sorted and need the next piece? We can price the whole tender, measure the quantities, or turn your drawings into a bill of quantities.
Construction Estimating
A full priced estimate you can bid from.We measure the whole job off your drawings and price it to NRM2 on real UK rates, so you bid from a number you can stand behind.
See construction estimating →Quantity Takeoff
Measured quantities for accurate pricing.Precise measured quantities for every trade off your drawings, so you and your suppliers price from the same numbers.
See quantity takeoff →BOQ Preparation
Itemised BoQ ready for tender.A clean, itemised schedule to NRM2, so every trade prices the same scope and your tender goes out consistent.
See BoQ preparation →FAQs about our cost planning
Not sure how it works or what you get? Here are the questions contractors ask us most about cost planning, answered straight.
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Set the budget before you commit to the price.
Tender due and no time to measure it all? Send us your drawings and we do the takeoff. Fixed fee agreed up front, full cost plan to NRM2, delivered to your deadline.