Design and build is a streamlined approach to construction. One company handles design and construction. You have one contract. One point of contact. One team is responsible for everything. Understanding how design and build works helps you see whether this approach suits your project. Design and build eliminates coordination between separate architects and builders. It simplifies the process. It often delivers projects faster and more efficiently than traditional approaches.
What Does Design and Build Mean
Design and build means one company designs and builds your project. The same team creates the design and executes the construction. There’s no separation between designer and builder.
Traditional approaches separate design from construction. An architect designs. A contractor builds. You coordinate between them. You manage two separate contracts. Communication happens indirectly.
Design and build combines these roles. One company handles everything. They design with their own construction expertise in mind. They know what they can build efficiently. They design accordingly.
This integration creates benefits. Design considers construction realities. Cost estimates are accurate because the builder is involved in design. Problems get solved collaboratively during design rather than during construction.
The design and build company takes responsibility for the complete project. They manage quality. They manage budget. They manage timeline. You’re not juggling multiple contractors.
Benefits of Using a Design and Build Company
Design and build offers significant advantages over traditional approaches.
Streamlined communication is a major benefit. You have one point of contact. One team. One chain of command. Questions get answered quickly. Decisions get made efficiently.
Cost certainty is another major benefit. The design and build company provides a fixed price. You know what you’re paying. There are no surprise bills from architects billing separately or contractors billing extras.
Timeline certainty matters too. Design and build companies commit to completion dates. They manage the whole process. They work efficiently because they’re responsible for both design and construction.
Quality is managed throughout. The same company designing is responsible for building quality. They design to their own standards. They ensure execution matches design.
Efficiency is built in. Designers and builders work together. Design decisions consider constructability. Materials are specified for buildability and cost. The process is efficient because one team manages everything.
Risk is reduced. One company takes responsibility for the complete project. If something goes wrong, one company fixes it. You’re not caught between contractor and architect arguing about responsibility.
Flexibility is easier to manage. If you want changes, one company implements them.
Design and Build Process Explained
Detailed design follows. Once you approve a concept, detailed designs are created. These show exactly what will be built. Materials are specified. Costs are estimated accurately.
Planning permission is prepared and submitted. If needed, the company handles applications. They manage the approval process.
Building Regulations approval comes next.
Costs and Timelines for Design and Build Projects
For single storey extensions in London, design and build costs typically run 60000 to 100000 for a 30 square meter extension. Costs vary by complexity and finishes.
Outside London, costs are lower. Similar extensions might cost 45000 to 75000.
Timelines are typically guaranteed. Design and build projects typically take 6 to 9 months total. This includes design, planning, and construction.
Single storey extensions might take 4 to 6 months from start to finish if Permitted Development applies.
Why Clients Choose Extension Architecture for Design and Build Projects
Extension Architecture offers complete design and build services. They handle everything from initial consultation through final completion.
They assess properties thoroughly. They understand what’s possible.
They take responsibility for everything. If something goes wrong, they fix it. You’re not caught between separate contractors.
For London homeowners wanting extensions or renovations, Extension Architecture provides complete solutions. One company. One contract. One team responsible for everything.
Get started with a consultation. Discuss your project. Understand possibilities. Choose design and build approach for streamlined, efficient project delivery.