Design-Phase and Pre-Construction Estimating: Conceptual to Construction Documents

Design Phase Estimating is estimating at each stage of design — conceptual, schematic, design development and construction documents — so cost decisions are made while changes are still inexpensive.

Early estimates help owners and designers make cost-informed decisions. We prepare estimates at each design milestone with a level of detail that matches the information available, and we document assumptions and allowances clearly.

Estimate levels

Estimates progress from order-of-magnitude (cost per square foot or parametric) to assembly-based and finally unit-cost estimates from complete documents. Estimate classes are commonly described by the maturity of project definition, and accuracy improves as definition improves.

Value engineering

When estimates exceed budget we propose value-engineering options with price, schedule effect and risk, so decisions are fast and documented.

What you receive

• Conceptual (order-of-magnitude) estimates
• Schematic and design-development estimates
• Value-engineering options
• Estimate reconciliation to the budget

Technical scope and terminology we work with

• Order-of-magnitude, parametric, assembly and unit-cost estimating
• Schematic design, design development and construction documents
• Allowances, contingency and escalation
• Value engineering, scope reconciliation and budget gap analysis

Who this service is for

Owners, developers, architects and contractors involved in preconstruction.

How it works

1. Send sketches or drawings at the current design stage.
2. We state assumptions and allowances.
3. We prepare the estimate.
4. We update it as the design develops.

Software, standards and file formats

We work in PlanSwift and Bluebeam Revu for digital takeoff and markup, Excel and RSMeans-style cost data for pricing, Oracle Primavera P6 and Microsoft Project for scheduling, and AutoCAD-compatible formats for drawings. Deliverables are provided as Excel, PDF and, where relevant, DWG files, organized by CSI MasterFormat.

When to use this service

Use design phase estimating when a bid date is close, when your team is stretched across projects, when you need an independent check of your own numbers or drawings, or when you want consistent deliverables in the same format every time. Tell us the due date when you request a quote so the schedule can be planned around it.

Engagement options

• One project: order design phase estimating for a single bid or job and receive a firm price and turnaround before we start.
• Several trades or divisions: combine this service with related scopes so quantities, drawings and pricing agree.
• Bid-season capacity: send multiple projects with their due dates and we schedule the work to hit each one.
• Ongoing support: repeat-volume contractors can agree standard formats, cost codes and turnaround so every delivery drops straight into their process.

Quality control, confidentiality and communication

Every deliverable is reviewed by a second team member before it reaches you, and assumptions, inclusions and exclusions are written down so they can be checked. If information is missing we send a short list of questions rather than guessing, and we tell you which assumption we used when a question cannot be answered in time. Your plans, specifications and files are used only to prepare your project work and are not shared publicly; see our privacy policy.

Related services, guides and pages

• Construction estimating and quantity takeoff
• Pre-bid, solicitation response and post-bid support
• Shop drawings, structural drafting and permit drawings
• Public bid estimating, pricing, samples, FAQ and bidding glossary

Why contractors outsource design-phase estimating

Bid season and permit queues compress the time your team has for each project. Outsourcing design-phase estimating adds capacity without adding permanent overhead, speeds up turnaround and gives you an independent check on your own numbers and drawings. You stay in control: you review the output, adjust assumptions and make the final decisions.

Estimates at every design milestone

• Conceptual (order-of-magnitude): cost per square foot or per unit, adjusted for location, quality level and market conditions, used for feasibility and budgeting.
• Schematic design: area-based and assembly-based estimates as the building massing and systems are chosen.
• Design development: assembly and early unit-cost estimates as materials, structure and systems are defined, with allowances for undeveloped scope.
• Construction documents: full quantity-takeoff estimates used for bidding or negotiation.

Cost models, contingency and escalation

Early estimates carry a design contingency that shrinks as the design develops, an escalation allowance to the planned construction midpoint and clearly stated exclusions such as land, owner costs and furniture. Estimate classes are commonly described by the maturity of project definition; the less defined the project, the wider the expected range of outcomes. Each estimate states its basis so the design team and owner understand what it covers.

Reconciling to the budget

When the estimate and budget differ, we prepare a reconciliation by division and propose value-engineering options with price, schedule effect and risk. Continue into bidding with pre-bid estimating support and construction estimating, and carry the result into cost control.