Design-Builder vs. Architect: Stamp, Scope & Fee Boundary

When evaluating a design builder vs architect for a residential or commercial project, separate the individual architect’s professional stamp from the builder’s construction scope before signing an agreement. Start with the verification worksheet below, then review how state licensing laws and published contract families divide design control, construction evaluations, and fee structures. Use this guide alongside our design-build topic collection and our overview of what design-build delivery covers.

According to DBIA, FMI Corporation projects design-build to represent over 47% of spending by 2028 and account for $2.6 trillion of construction spending over the 2024 – 2028 forecast period.

According to CMAA’s Owner’s Guide to Project Delivery Methods, in Design-Build the owner does not receive the checks and balances that exist when contracting separately with a designer and a general contractor.

Comparison design builder vs architect: stamp and scope worksheet

Use this comparison design builder vs architect worksheet when reviewing proposals for an architect vs design build firm. Copy the rows into your preconstruction review log and leave the verification column blank until you locate the named individual and written contract provision.

If you are comparing contractor qualifications, bonding, and reference scorecards, see our guide on how to choose a design-build firm.

Registered architect stamp boundary vs. design build architecture firms

When reviewing design build architecture firms or contractor-led proposals, distinguish corporate contracting permission from individual responsible control and plan stamping rules under the California Architects Practice Act and California Architects Board regulations:

Under California BPC 5535.3, a corporation may contract out architectural services as long as those services are under the responsible control of a licensed architect.

Under California BPC 5535.1, responsible control is the control over the content of architectural instruments of service during their preparation ordinarily exercised by an architect applying the required professional standard of care.

Under California BPC 5536.1, an architect in responsible control of plans, specifications, and instruments of service for others must sign and stamp them and all contracts therefor.

Effective January 1, 1991, California BPC section 5536.1(a) requires architects to stamp and sign plans, specifications, and other instruments of service as evidence of their responsibility.

Under California CCR section 136, an architect’s stamp must have a 1” minimum–2” maximum diameter circular shape and shall not be of the embossing type.

California BPC 5536.22(a) requires that any written contract for architectural services be executed by the architect and include their name, address, and license number.

Under California Section 5536.22(a)(8), an architect’s written contract must include a statement in at least 12-point type noting that architects are licensed and regulated by the California Architects Board.

Under California BPC 5582.1 and CCR 151, an architect who signs instruments of service not prepared by them or under their responsible control is subject to disciplinary action.

Under California Section 5536(a), unlicensed practice of architecture is a misdemeanor punishable by a fine of $100 to $5,000, or imprisonment in a county jail not exceeding one year.

Business name rules and residential woodframe exemptions

Check whether the proposing company uses architectural terms in its business name or service description, as that changes how residential woodframe exemptions apply under California regulations:

Under California Section 5537(a)(1), unlicensed persons are not prohibited from preparing plans for single-family dwellings of woodframe construction not more than two stories and basement in height.

Under California CCR 134(a), a business using architectural terms in its name must have a licensed architect in management control who is an owner, part-owner, officer, or employee.

Under California CCR 134(b), all professional services of a business using architectural terms must be under a licensed architect’s responsible control, including structures otherwise exempt under BPC 5537.

Record the individual architect’s license number and management role on the worksheet before relying on a firm’s marketing description.

Delegated design seal vs. Architect of Record seal

Even when a licensed architect stamps the primary drawings, structural connections, trusses, or specialty assemblies may be assigned to a trade contractor’s engineer. Review how AIA agreements and New York Regents Rules divide the delegator and delegatee seals, and see our companion guide on delegated design versus design-assist:

Under AIA Document A201-2017 Section 3.12.10.1, when design is delegated to a contractor, the architect must specify the performance and design criteria that the contractor is required to achieve.

Under AIA Document A201-2017 Section 3.12.10.1, a contractor providing delegated design services does so through an appropriately licensed design professional who uses its own signature and seal.

In AIA B141-2024 and B141PDB-2024, when portions of design are delegated, the delegated designer signs and seals the Drawings and Specifications while the Architect signs and seals the Construction Documents.

Under New York Regents Rule Section 29.3(b)(2)(d), a delegated design professional (delegatee) must be licensed or legally authorized and is required to sign and certify any design prepared.

Under New York Regents Rule 29.3(b)(2)(e) & (f), the delegating design professional of record must review and approve the delegated design in writing for conformance with the established specifications and parameters, and must determine in writing that the design conforms to the overall project design and can be integrated into such design.

Architect vs design build firm: contract scope and flow-down

When evaluating an architect vs design build firm, compare the direct Owner–Architect contract structure against the downstream Design-Builder–Architect contract structure. For prime Owner–Design-Builder agreement provisions, see our design-build contracts guide.

Independent architect scope and Spearin risk in conventional delivery

In a conventional Owner–Architect arrangement under the AIA contract family, review the phased service scope, cost-estimating assumptions, and plan-accuracy allocation:

AIA Document B101–2017 is a standard form of agreement between Owner and Architect requiring five phases of Basic Services: Schematic Design, Design Development, Construction Documents, Procurement, and Construction.

AIA Document B101–2017 assumes the Architect will provide cost estimates and design the Project to meet the Owner’s budget for the Cost of the Work, whereas the parties should consider using B103™–2017 if the Owner retains a third-party cost estimator or the Project uses fast track, phased, or accelerated scheduling.

On a design-bid-build project, under the Spearin doctrine, the Owner impliedly warrants the accuracy of the plans and specifications and carries the risk of construction following defective plans.

Downstream architect menu and non-incorporation in design-build

In a design-build arrangement, the Owner contracts with the Design-Builder while the Design-Builder contracts separately with the Architect. Check how the AIA design-build documents structure entity eligibility, service menus, flow-down, and construction evaluations:

AIA Document A141®–2024 replaces AIA Document A141–2014 as the agreement between Owner and Design-Builder and includes Exhibit B, the Design-Build Amendment executed when the parties agree on the Contract Sum.

In AIA Document A141–2024, the Design-Builder may be a design-build entity, an architect, construction contractor, real estate developer, or any entity legally permitted to do business as a design-builder in the jurisdiction.

AIA Document B141™–2024 replaces B143®–2014 as the agreement between Design-Builder and Architect for a traditional design-build project and uses an extensive menu of services rather than a fixed scope.

Under AIA Document B143, a design-build entity may retain an Architect only to provide a Preliminary Design while using a separate Architect or its own forces to develop the Construction Documents.

Under B141-2024, the Design-Build Agreement between the Owner and the Design-Builder is not incorporated by reference into the Design-Builder/Architect Agreement, making it a stand-alone document.

Because the Owner–Design-Builder agreement is not incorporated into B141-2024, if the Design-Builder wants to flow obligations down to the Architect, it must restate those obligations in B141-2024, including the Owner’s criteria and scope.

Unlike traditional B141-2024, Progressive Design-Build agreement B141PDB-2024 removes the menu approach for Design Services and makes Evaluations of the Work Related to the Architect’s Portion of the Project mandatory rather than optional.

Under Section 3.1.4 of B141-2024 and B141PDB-2024, the Architect’s basic coordination services cover only the Design-Builder and its Consultants and Subcontractors, while coordinating with the Owner’s Consultants is a Supplemental Service.

Bridging architect and independent Owner Advisor options

An Owner who wants design-build delivery without relinquishing early design definition or independent review can retain a bridging architect or an Owner Advisor before procuring the design-builder:

AIA Document C141-2024 can be used by an Owner to hire a bridging architect to prepare bridging documents containing technical requirements, plans, and project constraints to alleviate the Owner’s loss of control in design-build.

In CMAA’s Bridging method, the owner’s bridging architect (or owner’s design consultant, ODC) prepares preliminary design and bid documents, while the Design-Build contractor’s designer prepares the final construction documents.

Under the Owner Advisor Agreement Section 6.11, the independent Owner Advisor agrees not to participate on any Design-Build team to pursue or execute the Project without the Owner’s advance written consent.

Fee structures, redesign duties, and residential deposit caps

Compare how independent architect compensation, budget-overrun redesign duties, design-build GMP conversions, and California residential home improvement deposit caps operate across these agreements:

Under AIA Document B101–2017 § 11.1, two popular methods for compensating Architects for Basic Services are Stipulated Sum and Percentage Basis, alongside optional hourly billing rates or multiple of direct salary expense.

Under AIA Document B101–2017 § 11.6, percentage-basis progress payments to the Architect are calculated against the Owner’s most recent budget for the Cost of the Work and are not retroactively adjusted.

Under AIA Document B101–2017 § 6.7, the Architect must provide redesign services without additional compensation if the lowest bona fide bid exceeds the Owner’s budget, except for unanticipated market conditions.

In AIA design-build agreements, cost estimating by the Architect is an optional menu service in the Traditional method, whereas in Progressive design-build the Design-Builder is responsible for performing cost estimating.

According to CMAA, a common Design-Build contracting method starts with a fixed-fee contract for design and pre-construction costs plus agreed General Conditions and a percentage construction fee, later converted to a Guaranteed Maximum Price (GMP).

In California, the Contractors State License Board (CSLB) requires a written contract for all home improvement projects over $500, and any change to contract price or scope requires a signed written Change Order.

Under California CSLB home improvement contract rules, a contractor’s down payment cannot exceed $1,000 or 10 percent of the contract price, whichever is less, excluding finance charges.

Questions to verify before signing

Before executing an owner agreement, ask the proposing team to provide written answers to these verification prompts:

• Who is signing and stamping as the licensed architect in responsible control? Request the individual architect’s full name, state license number, business address, and employment or subconsultant relationship, and confirm which drawings and specifications will carry their circular stamp and signature.
• Where in the contract is the architect’s design scope defined? Request the exact article or service menu showing whether the architect’s scope covers preliminary design only or continues through construction documents, cost estimating, delegated-design submittal review, and site evaluations during construction.
• Are owner criteria restated in the downstream architect agreement? Confirm that the owner’s program, performance criteria, and coordination duties with separate owner consultants are written directly into the architect’s contract rather than assumed to flow down automatically.

Save the written responses alongside your contract package and return to our design-build topic collection for related preconstruction and contract guides.

Sources

• California Architects Board — Responsible Control Within the Design-Build Model
• California Architects Board — Stamp Requirements for Licensed Architects
• AIA Contract Documents — Agreement Between Owner and Architect Summary
• AIA Contract Documents — Agreement Between Owner and Design-Builder Summary
• AIA Contract Documents — Agreement Between Design-Builder and Architect Summary
• AIA Contract Documents — Design-Build Guide
• AIA and AISC — Design Collaboration on Construction Projects: Delegated Design and Design Assist
• New York State Education Department — Office of the Professions Design Delegation Guideline
• Design-Build Institute of America — What Is Design-Build and Owner Advisor Agreement
• Construction Management Association of America — Owner Guide to Project Delivery Methods
• California Contractors State License Board — Home Improvement Contracts Guide