Preliminary Estimating Services for Early Stage Project Planning and Budget Development

A preliminary estimate is an early-stage construction cost forecast prepared during the conceptual or schematic design phase before detailed drawings are complete. It uses square foot costs, assembly pricing, and parametric models to produce a budget range rather than a fixed bid. Preliminary estimates help owners, architects, and developers evaluate project feasibility, compare design options, and set realistic budgets before committing to full design development.

Conceptual estimates typically have an accuracy range of plus or minus 15 to 30 percent depending on the level of design information available. Estimates based on schematic drawings with defined square footages and basic assemblies are more accurate than those based on program requirements alone. We clearly communicate the expected accuracy range with every preliminary estimate so owners and design teams can make informed decisions about contingency and budget.

Square foot estimating uses historical cost data per square foot of building area to produce a rapid budget range. The estimator selects comparable project types from cost databases such as RSMeans, adjusts for regional labor and material factors, applies escalation for current market conditions, and multiplies by the project's gross square footage. Square foot estimates are most useful in the earliest design phases when only building size and use type are known.

The level of information required depends on the estimate type. For square foot estimates we need building type, approximate square footage, location, and quality level. For assembly estimates we need schematic floor plans, building sections, and elevations. For parametric estimates we need program requirements including room counts, building systems, and site conditions. More detailed information produces a narrower accuracy range.

A preliminary estimate is prepared during early design using broad cost metrics like cost per square foot or cost per assembly. A detailed estimate is prepared from final construction documents using material takeoffs, labor productivity rates, and vendor pricing. Preliminary estimates carry wider accuracy ranges and are used for feasibility and budgeting. Detailed estimates are used for bidding and procurement. Both are essential at different project stages.

Yes. We regularly prepare preliminary estimates from hand sketches, concept renderings, bubble diagrams, and program requirement lists. Our estimators work with the available information to produce the most accurate budget range possible and clearly document all assumptions. As the design develops we can refine the estimate with additional detail.

An assembly estimate breaks the project into major building systems or assemblies such as foundations, superstructure, exterior enclosure, roofing, interior construction, mechanical systems, electrical systems, and sitework. Each assembly is priced using historical unit costs that include material, labor, and equipment. Assembly estimates provide more accuracy than square foot estimates because they account for the specific building systems being designed.

Most preliminary estimates are completed within 2 to 5 business days depending on the estimate type and available design information. Square foot estimates for standard building types can be completed in 1 to 2 days. Assembly and parametric estimates for complex projects with multiple design options may require up to 5 business days. We provide a timeline when scoping each project at no charge.

Yes. Preliminary estimates are often prepared as range estimates showing a low, most likely, and high scenario. We also prepare options-based estimates that compare different design approaches, material selections, and quality levels. For example, we can show the cost difference between a wood frame and steel frame structure, or between standard and premium finish levels, enabling informed value engineering decisions.

You should get a preliminary estimate at project inception, during feasibility studies, before site acquisition, during schematic design, ahead of financing applications, and before value engineering exercises. Early cost insight helps owners avoid committing to projects that exceed their budget, supports informed design decisions, and strengthens financing and investor proposals.