Softwr

Construction · head to head

Primavera P6 vs Siteline

Primavera P6 logo

Primavera P6

Construction

Enterprise project portfolio management for construction

From
$2500/year
Rated
-
Full reviewWebsite
Siteline logo

Siteline

Construction

Pay application and billing workflow built only for speciality subcontractors

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Primavera P6 listed on G-Cloud 14 by reseller RPC UK Limited at £165 to £439 per user per month for Oracle Primavera P6 EPPM; Siteline it serves subcontractors only, so a general contractor evaluating it is looking at the wrong side of the transaction entirely.
  • They diverge on capability: Primavera P6 covers CPM scheduling, Siteline covers Pay application generation.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Primavera P6 and Siteline actually diverge.

Attributes where Primavera P6 and Siteline differ
AttributePrimavera P6Siteline
Starting price$2500/yearOn request
Pricing modelsubscriptionquote
PlatformsWindows, WebWeb
Founded1977Unknown

Identical on both: free tier (No), user rating (Not yet rated), category (Construction).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Primavera P6

  • CPM scheduling
  • Resource management
  • Cost management
  • Risk analysis
  • Portfolio management
  • Oracle ERP
  • Unifier
  • Aconex

Only in Siteline

  • Pay application generation
  • Lien waiver management
  • Compliance document tracking
  • Billing status visibility
  • Accounting system integration
  • Accounts receivable reporting

What people use each for

The jobs each tool is most often brought in to do.

Primavera P6

  • Project schedulingnot Siteline
  • Resource planningnot Siteline
  • Cost controlnot Siteline
  • Portfolio managementnot Siteline

Siteline

  • A trade contractor whose billing team rebuilds the same pay application in four different general contractor formats each monthnot Primavera P6
  • A subcontractor losing a billing cycle to rejected applications over missing lien waiversnot Primavera P6
  • A finance director trying to forecast collections across dozens of general contractors and retention balancesnot Primavera P6
  • A growing subcontractor whose billing process depends entirely on one person and a spreadsheetnot Primavera P6

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Primavera P6

  • Listed on G-Cloud 14 by reseller RPC UK Limited at £165 to £439 per user per month for Oracle Primavera P6 EPPM

Siteline

  • It serves subcontractors only, so a general contractor evaluating it is looking at the wrong side of the transaction entirely.
  • It does not do job costing, project management or payroll, so it is an addition to your systems rather than a consolidation of them.
  • Value depends on a clean integration to your construction accounting system, and contractors with heavily customised or elderly installations should confirm the connection before signing.
  • General contractor portals and billing formats change without warning, and although the vendor absorbs that maintenance you still feel it as occasional friction in a month-end window with no slack.
  • The billing team has to adopt it fully in the first month-end or they revert to spreadsheets under deadline pressure, which makes the implementation timing more delicate than the software suggests.

Pricing, plan by plan

Primavera P6

$2500/year
  • P6 Professional$2500/year
    • Project scheduling
    • Resource management
    • Cost tracking
  • P6 EPPMFree
    • Enterprise PPM
    • Portfolio management
    • Advanced analytics

Siteline

On request
  • Siteline$undefined/year
    • Pay application workflow
    • Lien waiver and compliance tracking
    • Accounting system integration

Which should you pick?

Choose Primavera P6 if

  • You need cpm scheduling.
  • You work on Windows, Web.
  • You also want resource management.
Primavera P6 review

Choose Siteline if

  • You need pay application generation.
  • You also want lien waiver management.
Siteline review

Questions people ask

Is Primavera P6 or Siteline better?
Neither clearly leads. Primavera P6 starts at $2500/year and Siteline at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Primavera P6 or Siteline?
Primavera P6 starts at $2500/year and Siteline at On request.
Does Primavera P6 or Siteline run on more platforms?
Primavera P6 runs on Windows, Web. Siteline runs on Web.
What is Primavera P6 best used for?
Primavera P6 is most often used for project scheduling, resource planning, cost control, portfolio management. Of those, project scheduling and resource planning are not what Siteline is typically brought in for.
What can Primavera P6 do that Siteline cannot?
Primavera P6 covers CPM scheduling, Resource management, Cost management, Risk analysis. Siteline covers Pay application generation, Lien waiver management, Compliance document tracking, Billing status visibility.

Answered from the vendors’ own pages

Siteline: Does it replace our accounting system?

No. It reads from Sage 300 CRE, Vista, Foundation and similar systems and handles the billing workflow those systems handle poorly.

Siteline: What should we measure in a trial?

Days sales outstanding and the number of rejected or delayed pay applications. The case is about cash timing, not headcount.

Siteline: Is it useful for general contractors?

No. It is built for the party submitting pay applications, not the party receiving them.

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