Design-Build Contractor in Los Angeles

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Design-Build Delivery

Under design-build, Hades Construction is the sole responsible entity for your project. We subcontract architectural and engineering services and become the single point of accountability for design and construction under one contract, working with pre-qualified architects, engineers and consultants.


One contract, one team, one party answerable for the outcome — and an earlier cost commitment than design-bid-build can give you.

Why owners choose design-build


Single point of responsibility

Design and construction sit under one contract. There is no gap between the drawings and the build for a problem to fall into, and no argument about which side owns it.

Shortened timeline

Design and construction overlap rather than running end to end. Long-lead procurement and early trade packages can be released while later design packages are still being completed.

Early cost commitment

Because the builder is inside the design process, a reliable number arrives far earlier than it does on a project priced only when the set is complete.

Less owner involvement

Once the project is defined, the coordination load between designer and builder sits with us rather than with you.

Design-build projects we have delivered


IF&CO Custom Jewelry

Los Angeles · Retail

Luxury retail space designed and built in collaboration with Curious Minds LA, completed August 2020.

View project

Dr. Ying Peng Clinic

Mission Viejo · Medical

Design-build medical clinic completed August 2019.

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Club Lagree

Pasadena · Fitness

Design-build fitness studio delivered for Greystar, completed January 2020.

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Teddy’s Tacos

Culver City · Restaurant

Design-build restaurant project started May 2021.

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Amp Lofts

Arts District · Multifamily

Ongoing design-build work for Greystar, running since 2019.

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Hades Office

Northridge · Office

Our own headquarters, designed and built in-house and completed March 2020.

View project

“Beshoy came highly recommended to me, and as part of Hades Construction, has been instrumental in the development of my office. Organized, attentive, and readily available.”

Dr. Ying Peng, M.D. PhD — Comprehensive Neurology Care

What design-build asks of you, and of us


The project has to be defined

Design-build works when the brief is clear: what the space is for, how it operates, the quality level, the budget ceiling and the date. That definition is the owner’s contribution, and it is the thing that makes everything downstream fast.

Design decisions get costed as they are made

Because we hold both sides, every design option can be priced while it is still an option. Value engineering happens as a design conversation rather than as a cost-cutting exercise after the bids come in high.

Constructability is designed in

Details that cannot be built as drawn, conflicts between trades and assumptions that do not survive contact with the existing building get caught during design, when changing them costs a drawing revision instead of a change order.

Permitting is sequenced deliberately

Holding design means we can stage submissions — demolition or foundation packages ahead of the full set where the jurisdiction allows it — instead of waiting for one complete submission.

Procurement starts earlier

Long-lead equipment, mechanical plant, storefront and millwork can be specified and released while later packages are still in design. On projects with fixed opening dates this is usually where the time is won.

You still get an open book

Design-build does not mean an opaque price. Where you want cost certainty we work toward a Guaranteed Maximum Price with the subcontractor pricing visible behind it.

How a design-build project runs


  1. DefinitionBrief, site or lease position, budget ceiling and the date you need to be operating.
  2. Design and preconstruction togetherArchitect and engineers appointed under our contract, with costing, constructability and permit strategy running alongside the drawings.
  3. PriceGuaranteed Maximum Price or negotiated lump sum against a defined scope.
  4. ConstructionSingle team through permitting, procurement, build and inspection.
  5. CloseoutFinal sign-offs, as-builts, warranties and handover.

Common questions


Do you employ the architect?

We subcontract architectural and engineering services and hold those contracts, working with pre-qualified partners. You hold one contract, with us.

Can we bring our own architect?

Yes. If you have a designer you want to keep, we can either bring them into the design-build contract or deliver the project under general contracting or construction management instead. Compare the delivery methods.

When is design-build the wrong choice?

When the design is already complete, or when the project has to go out to open competitive bid. In those cases design-bid-build or a negotiated contract fits better, and we will say so.

How early can we get a reliable price?

Earlier than on a bid job, because we are pricing as the design develops. The number tightens as scope is fixed; we show you which parts are firm and which are still allowances.

Does design-build work for tenant improvements?

Frequently, yes — several of the projects above were leased-space fit-outs. See tenant improvement work.

Where do you deliver design-build?

Los Angeles County and the surrounding Southern California markets, including Ventura and Orange counties.

Discuss a design-build project


Tell us what you need the space to do and when you need to be operating in it. We will tell you whether design-build is the right structure and what it would take.

Or call (213) 652 2500 · Monday–Friday, 8:00–17:30 PST