Design & Build
One Team, One Budget, One Promise.
The stress-free way to build, we handle everything from first sketch to finished home.
From Concept to Completion: The Happy Building Design & Build Process
Our all-in-one service keeps everything streamlined, so you do not need to coordinate separate professionals. We manage the entire journey from early concepts through to construction and final handover, with one team owning the outcome.
STEP 1
Design and scope planning
We start by understanding your goals and your home, then shape the brief and produce design concepts that maximise space, light, flow, and function.
STEP 2
Guaranteed budget match and build preparation
We align the design with a realistic build budget, so what we design is what we deliver. You get clarity on costs, scope, and timelines before the build begins.
STEP 3
Construction delivery and handover
Your build is managed day-to-day with consistent oversight, quality checks, and regular updates, followed by final snagging and a smooth handover.
One Team From Design to Build, With Total Accountability
Happy Building offers expert design and build under one roof, removing gaps, handovers, and split responsibilities. From the first sketch to the finished home, one team owns the plan, the budget, and the result.
You will benefit from a clear process, a single point of contact, and joined-up decision making that keeps your project moving, reduces uncertainty, and protects the quality of the final finish.
Why Choose Us
All-in-one service: No gaps, no handovers, one team from start to finish
Single point of contact: One dedicated lead guiding you through every stage
Guaranteed budget match: What we design is what we deliver, with no hidden costs
Premium build quality: Handpicked trades, daily oversight, and outstanding craftsmanship
Your Home, Our Commitment
We are committed to delivering a smoother, more enjoyable project experience, with honest communication, dependable timescales, and a finished result that feels considered from every angle.
95%
of our clients say
they’d build with us again
"Geo was just fantastic. A great listener, gave good professional design advice, technically very good and provided a top service. Highly recommend Geo at Happy Building"
150+
"I really enjoyed working with the Happy Building team. They were very friendly and helpful. They have a delightful team who are really passionate about their work, portrayed by outstanding feats of architecture. I have been delighted to experience and learn each and every stage of the planning process with their talented team, articually made to suit their clients illustrating thier dedication and expertise towards designing projects which can be build."
6 in 10
“We are currently working with Happy Building Company in Cheam on a project, and we couldn't be more satisfied with the outcome so far. From start to the finish, the process has been seamless, professional, and executed with the highest level of care. If you're looking for a team that prioritizes excellence, precision, and customer satisfaction, Happy Building Company is a fantastic choice. Highly recommended!"
“We initially used Happy Building’s Design and Planning service, then selected them to build our project as we felt confident that they understood our vision and would deliver to a high specification. We were not disappointed. We found the whole team to be extremely helpful and supportive throughout the entire process. They delivered a build that was well beyond our expectations and we absolutely love our new home. Thank you so much to all the Happy Building team."
95%
of our clients say
they’d build with us again
"Happy Building guided us from planning to build with zero stress — and stayed exactly on budget. We’d do it again in a heartbeat."
Benefits of choosing Happy Building for your design & build
Selecting the right team makes a real difference. Our approach is built to reduce stress, keep decisions simple, and deliver a high-quality finish that matches the design intent.
All-in-one service, no handovers
Build planning: Clear scope, schedule, and milestones before work begins
Site management: A Senior Project Manager coordinates every stage
Quality checks: Regular inspections and snagging throughout the build
Guaranteed budget match
Design aligned to build cost: Clarity before you commit
Fewer surprises: Scope and budget agreed early
Confidence to move forward: What you approve is what gets built
Premium build quality with daily oversight
Handpicked trades: Experienced specialists for each stage
Consistent site standards: Quality checks and snagging throughout
Clean, well-managed build: Professional site organisation and communication
Client Design Portal
Our client portal gives you real-time visibility throughout your project. With one login you can access key documents, updates, and progress notes, schedule meetings easily, and message the team directly.
What’s Included?
Design, build, manage, we handle it all. From early concepts and drawings to project management and construction delivery, we keep the process simple, coordinated, and accountable.
Areas we serve
Surrey
South London
Surrey
South London
Start your project today
Get the stress-free design and build experience. Complete the form and we will be in touch to discuss your ideas, outline next steps, and advise on the best way to move forward.
Contact us
FREQUENTLY ASKED QUESTIONS
Do I need to have plans ready before you can build?
Ideally, yes. If you already have approved plans or drawings, we can review them and advise on build scope, timescales, and next steps.
Are you fully licensed and insured?
Yes, our build team is fully licensed and insured for complete peace of mind.
What warranty is included with your build work?
All projects include a 6-year structural warranty, protecting your build long after handover.
Will I have a dedicated project manager?
Yes, you will have a dedicated Senior Project Manager as your single point of contact throughout the build.
How do you keep projects on time and on budget?
We agree scope, milestones, and realistic timescales before work begins, then manage delivery through structured planning, clear communication, and regular progress updates.