Best Practice Aia

Best Practices
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Defining the Architects Basic Services

Contributed by the AIA Knowledge Resources Staff
The AIA collects and disseminates Best Practices as a service to AIA members without endorsement or recommendation.
Appropriate use of the information provided is the responsibility of the reader.
SUMMARY
DESIGN DEVELOPMENT PHASE SERVICES
A clients unfamiliarity with the process of

architectural design should not hinder that clients
comprehension of the phases of design services.
This Best Practice introduces first-time clients to
the common services of architectural design and the
process of design-bid-build.
Design development (DD) services use the initial design

documents from the schematic phase and take them one
step further. This phase lays out mechanical, electrical,
plumbing, structural, and architectural details.
Note: The deliverables listed below are examples of

common architectural deliverables for each phase
but are not required of AIA members.
SCHEMATIC DESIGN PHASE SERVICES

During the first phaseschematic designan architect
consults with the owner to determine project goals and
requirements. Often this determines the program for the
project.
The program, or architectural program, is the term used to
define the required functions of the project. It should
include estimated square footage of each usage type and
any other elements that achieve the project goals.
During schematic design, an architect commonly
develops study drawings, documents, or other media that
illustrate the concepts of the design and include spatial
relationships, scale, and form for the owner to review.
Schematic design also is the research phase of the project,
when zoning requirements or jurisdictional restrictions are
discovered and addressed.
This phase produces a final schematic design, to which
the owner agrees after consultation and discussions with
the architect. Costs are estimated based on overall project
volume. The design then moves forward to the design
development phase.
Deliverables: Schematic design often produces a site
plan, floor plan(s), sections, an elevation, and other
illustrative materials; computer images, renderings, or
models. Typically the drawings include overall
dimensions, and a construction cost is estimated. Note:
The contract may actually spell out what is to be
delivered.
The AIA
Typically referred to as DD, this phase results in drawings

that often specify design elements such as material types
and location of windows and doors. The level of detail
provided in the DD phase is determined by the owners
request and the project requirements. The DD phase often
ends with a formal presentation to, and approval by, the
owner.
Deliverables: Design development often produces floor
plans, sections, and elevations with full dimensions. These
drawings typically include door and window details and
outline material specifications.
CONSTRUCTION DOCUMENT PHASE

SERVICES
The next phase is construction documents (CDs). Once
the owner and architect are satisfied with the documents
produced during DD, the architect moves forward and
produces drawings with greater detail. These drawings
typically include specifications for construction details
and materials.
Once CDs are satisfactorily produced, the architect sends
them to contractors for pricing or bidding, if part of the
contract. The level of detail in CDs may vary depending
on the owners preference. If the CD set is not 100percent complete, this is noted on the CD set when it is
sent out for bid. This phase results in the contractors final
estimate of project costs. To learn more about the most
common ways owners select a contractor, see Best
Practice 05.03.01, Qualifications-Based vs. Low-Bid
Contractor Selection.
Deliverables: The construction document phase produces
a set of drawings that include all pertinent information
required for the contractor to price and build the project.
BID OR NEGOTIATION PHASE SERVICES

The first step of this phase is preparation of the bid
documents to go out to potential contractors for pricing.
The bid document set often includes an advertisement for
bids, instructions to bidders, the bid form, bid documents,
the owner-contractor agreement, labor and material
Knowledge gained from experience immediately applicable to a task at hand.
BP 15.01.01
Best Practices
payment bond, and any other sections necessary for
successful price bids. For some projects that have unique
aspects or complex requirements, the architect and owner
elect to have a prebid meeting for potential contractors.
After bid sets are distributed, both the owner and architect
wait for bids to come in. The owner, with the help of the
architect, evaluate the bids and select a winning bid. Any
negotiation with the bidder of price or project scope, if
necessary, should be done before the contract for
construction is signed.
The final step is to award the contract to the selected
bidder with a formal letter of intent to allow construction
to begin.
Deliverables: The final deliverable is a construction
contract. Once this document is signed, project
construction can begin.
CONSTRUCTION PHASE SERVICES

Contract administration (CA) services are rendered at the
owners discretion and are outlined in the owner-architect
construction agreement. Different owner-architectcontractor agreements require different levels of services
on the architects part. CA services begin with the initial
contract for construction and terminate when the final
certificate of payment is issued.
The architects core responsibility during this phase is to
help the contractor to build the project as specified in the
CDs as approved by the owner. Questions may arise on
site that require the architect to develop architectural
sketches: drawings issued after construction documents
have been released that offer additional clarification to
finish the project properly. Different situations may
require the architect to issue a Change in Services to
complete the project.
page 2 of 2
For More Information on This Topic
See also the 14th edition of the
Handbook, which can be ordered from
the AIA Store by calling 800-242-3837
(option 4) or by email at
bookstore@aia.org.
See also Defining Project Services
beginning on page 952 of the 15th
Edition of the Architects Handbook of
Professional Practice. The Handbook
can be ordered from the AIA Store
online at www.aia.org/store, by calling
800-242-3837 (option 4), or by email
at bookstore@aia.org.
Feedback
The AIA welcomes member feedback on Best Practice
articles. To provide feedback on this article, please
contact bestpractices@aia.org.
Key Terms
Design
Preliminary design
Schematic design
Design development
Construction documents
Bidding or negotiation
Construction contract administration
July 2007
Deliverables: A successfully built and contracted project.
RESOURCES
More Best Practices
The following AIA Best Practices provide additional
information related to this topic:
10.08.01 Qualifications-Based vs. Low-Bid Contractor
Selection
09.04.02 How Roles Change in Design-Build
10.10.04 Terminology: As-Built Drawings, Record
Drawings, Measured Drawings
The Knowledge Resources Staff based this Best Practice
on definitions in the AIA Contract Documents as well as
in the 12th, 13th, and the 14th editions of The Architects
Handbook of Professional Practice.
The AIA
Knowledge gained from experience immediately applicable to a task at hand.
BP 15.01.01

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Best Practices

Defining the Architects Basic Services

DESIGN DEVELOPMENT PHASE SERVICES

A clients unfamiliarity with the process of

Design development (DD) services use the initial design

Note: The deliverables listed below are examples of

SCHEMATIC DESIGN PHASE SERVICES

Typically referred to as DD, this phase results in drawings

CONSTRUCTION DOCUMENT PHASE

BID OR NEGOTIATION PHASE SERVICES

Knowledge gained from experience immediately applicable to a task at hand.

CONSTRUCTION PHASE SERVICES

Deliverables: A successfully built and contracted project.

Knowledge gained from experience immediately applicable to a task at hand.

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