Construction Estimating for UK Contractors | Costable
Independent Quantity Surveyors ■ UK-Wide
Open 9–22 · 7 days   +44 7825 421686
Now pricing August tender deadlines

Your evenings are for anything but take‑offs.
We price. You build.

Send us the drawings, specification or scope of works. A tender-ready estimate comes back in 3 to 5 working days, with a 48-hour priority service for tight deadlines. Then a QS gets on the phone and walks you through margin, risk and pricing before you submit. The call is the product. The spreadsheet is just the paperwork.

No sign-up · Price & turnaround confirmed within 24 hrs · Confidential
15+
Years' experience
£200m+
Projects priced
300+
Estimates delivered
48h
Priority service available
Estimating & tender support ■BOQ / take-offs ■Margin & risk calls ■JCT / NEC contract review ■Valuations & final accounts ■Confidential ■ Estimating & tender support ■BOQ / take-offs ■Margin & risk calls ■JCT / NEC contract review ■Valuations & final accounts ■Confidential ■
01

How it works

Three lines.
One of them nobody else offers.
1.0

Send us the tender

Send over whatever you have, drawings, specification or scope of works, by email, WhatsApp or upload. Tell us your deadline and we will personally come back to you within 24 hours to confirm price and turnaround.

Any format accepted
2.0

Priced in 3 to 5 working days

We price it properly: an itemised, tender-ready estimate with labour and materials breakdown, bill of quantities and a risk review. Need it faster? A 48-hour priority service is available for tender deadlines.

48h priority available
3.0

We talk it through

Before you submit, we set up a call or video meeting and go through the estimate together, line by line. We talk margin, risk and pricing strategy until we both agree exactly how the costs go in.

The Costable difference
02

What comes back

A real Costable estimate · Nov 2025
Tender-ready means tender-ready

Clear enough to submit as-is. Detailed enough to defend in the room.

  • →Itemised estimate, structured to your tender
  • →Labour & materials breakdown
  • →Bill of quantities / take-off
  • →Risk review, where the job could bite
  • →Margin call with your QS before submission
Priced in 36 hrs
Costable. Tender EstimateSide & rear extension · Nov 2025
Work sectionTotal (excl. VAT)
1.0Site preparation & clearance£2,855
1.1Piled foundations£14,692
1.2Ground floor construction£6,443
1.3External walls, brick & block£10,506
1.6Pitched roof structure & insulation£11,172
1.13Electrical installation£2,522
+13 further work sections£59,516
Tender total (excl. VAT)£107,706
↳ Margin & risk call included
03

What we do

From one tender
to your whole pipeline

Built for growing contractors without a full-time commercial team. Whether you are a specialist subcontractor pricing £100k packages or a main contractor tendering multi-million-pound projects, you get experienced QS support exactly when you need it.

3.1→

Estimating & tender support

Full pricing, BOQs and cost analysis, tender-ready in 3 to 5 working days, with 48-hour priority available. Then we sit down together and agree the margin before you commit to a number.

Most popular · Start here
3.2→

Contract review (JCT & NEC)

We flag the clauses that bite: payment terms, liability, risk transfer. Plain-English summary and your negotiation points.

Before you sign
3.3→

Project QS support

Valuations, variations and final accounts handled properly, so you get paid what the work is worth, on time.

Through the job
3.4→

Commercial & profit control

See, job by job, where the profit actually is, so you chase the right work and price it with confidence.

Know your numbers
04

The person behind the numbers

"You are pricing work worth hundreds of thousands of pounds. That deserves more than a spreadsheet in your inbox. At Costable, you are working with a QS with main contractor background, and every figure is explained before you submit."
DavidFounder & Quantity Surveyor
15+
Years' QS experience
Top 5
UK contractor background
7/7
Days open, 9–22h
"
His attention to detail and clear breakdown of costs really helped strengthen our tender submission. We were able to submit a strong and competitive bid and successfully win the job.
Darenth Housing Properties Ltd · Contractor
Enquiry · Ref 05

Got a tender on your desk right now?

You send drawings today ← 3 to 5 days, 48h priority → You submit with confidence
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