Design and Build Fit Out vs Traditional Procurement: Which Is Right for You?

If you’re planning a commercial fit out — whether it’s an office, gym, or leisure facility — one of the first decisions you’ll face is how to procure the project. Do you appoint an architect separately to design it, then go out to tender to find a contractor? Or do you use a design and build contractor who takes on both roles?

It’s a decision that significantly affects your cost, risk, programme, and ultimately the quality of the finished space. Here’s an honest assessment from Design Business Interiors, who have delivered both types of project over 30 years.

What is design and build?

Design and build (sometimes called D&B or turnkey) means appointing a single contractor who is responsible for both the design and construction of your project. You deal with one company, sign one contract, and have a single point of accountability throughout.

The design and build contractor employs or manages the design team in-house — typically including interior designers, space planners, structural engineers, and M&E consultants — alongside their site management and construction teams.

What is traditional procurement?

Traditional procurement separates the design and construction functions. You appoint an architect (and often a quantity surveyor, structural engineer, and M&E consultant) to develop the design and produce a full set of drawings and specifications. You then invite a number of contractors to price against that information, appoint the preferred contractor, and the architect administers the contract on your behalf.

Comparing design and build vs traditional procurement

Cost

Design and build is generally more cost-efficient for fit out projects in the £100,000–£2,000,000 range. Because the contractor controls both the design and specification, they can engineer value from the outset — selecting materials, systems, and methods that they know to be cost-effective and practically buildable. There’s also less wasted professional fees — in a traditional project, a significant budget goes on architect, QS, and engineer fees before a contractor is even appointed.

Traditional procurement can achieve competitive pricing if the market conditions are right and you receive multiple keen tender returns. However, the separate professional fees can add 10–20% to the total project cost, and the risk of design-to-construction cost increases is higher.

Risk

Design and build places the risk with the contractor — if the design changes cause cost increases, those are generally the contractor’s problem (subject to contract terms). As the client, you have clear price certainty from a relatively early stage.

Traditional procurement leaves more risk with the client. If the architect’s design cannot be built for the budgeted price, you either have to re-design or find more money. Variations issued during the build phase are common and can significantly inflate the final account.

Timescale

Design and build is typically faster. Design and construction can be overlapped — while detailed design of later phases is being completed, early phases can be under construction. The programme is controlled by a single entity.

Traditional procurement requires the full design to be completed before tendering, which must be completed before the contractor is appointed, which must happen before construction starts. The sequential nature of the process adds months to the programme.

Design quality

This is where many clients worry about design and build — the perception being that a contractor-led process will compromise design quality in favour of cost-cutting. In our experience, this is a concern rooted in the quality of the contractor, not the procurement method.

A design and build contractor with genuine in-house design capability — like Design Business Interiors — can produce spaces of exceptional quality. We have delivered gym, office, and leisure fit outs to the standards demanded by major national brands. The key is to look at the contractor’s portfolio before you appoint, not to assume that architect-led means better designed.

Communication

Design and build: One point of contact. Clear ownership. Faster decisions.

Traditional procurement: Multiple consultants, multiple contracts, and the potential for each party to attribute problems to another. Managing the communication between an architect, engineer, and contractor requires significant client time and often a dedicated project manager.

When is traditional procurement the right choice?

Traditional procurement works best for very large, complex projects — typically above £5–10 million — where independent cost management, detailed specification control, and the ability to test the market competitively are worth the additional cost and time. Heritage buildings with complex conservation requirements or projects requiring unusual specialist procurement can also benefit from the traditional route.

For the vast majority of commercial fit outs — offices, gyms, leisure facilities, and retail — design and build is the more efficient, more controllable, and often better-value approach.

Why Design Business Interiors operates as a design and build contractor

We believe the design and build model is the right way to deliver commercial fit outs for our clients. We hold full responsibility — for the design, the cost, the programme, and the quality. Our clients get one number, one programme, and one team to call if anything needs resolving.

We have delivered over 30 years of projects on this basis, working with clients ranging from independent businesses to national franchise operators. Our record of delivering on time, every time, is built on the clarity and accountability that design and build provides.

Ready to discuss your project?

Whether you’re weighing up your procurement options or ready to move forward, the team at Design Business Interiors is here to help. Contact us for a free, no-obligation consultation.