Aylesbury & Buckinghamshire · 26 years' experience
Aylesbury's Trusted Builders & Extension Specialists, Fixed Price, One Team
Twenty-six years on the tools, a directly-managed team of three to eight trades, and building control handled through to final sign-off. Free survey normally within a week.
Fixed-price quotes · £2m public liability · £10m employers' liability
26 years
Hands-on building experience
3–8 trades
Team scaled to each project
£2m / £10m
Public & employers' liability cover
Within a week
Free survey and fixed quote
What we're known for
Two things sit at the heart of the business
Extensions are the main focus of DBD Builders Ltd, alongside full new-build projects for private clients. Everything else we do supports those two.
The complete service
One contractor for the whole job
Roofing, landscaping, driveways, renovations and more, with electrics, plumbing and gas carried out by qualified trades we have worked alongside for over 15 years.
Loft Conversions
Turning unused roof space into a proper bedroom, office or bathroom, structurally done and signed off.
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Home Renovations & Refurbishments
Whole-house renovations and refurbishments, all trades coordinated under one contractor.
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Roofing
New roofs, re-roofing and roof repairs on pitched and flat roofs, as part of a project or standalone.
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Landscaping
Hard and soft landscaping that finishes the outside of a project properly.
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Driveways & Patios
Block paving, resin and slabbed driveways and patios laid on properly prepared bases.
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Kitchen Fitting
Full kitchen installation including the electrics, plumbing and preparation behind the units.
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Bathroom Fitting
Bathrooms, en-suites and cloakrooms fitted with the waterproofing, plumbing and electrics done properly.
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Groundworks & Foundations
Excavation, foundations and drainage — the part of the job nobody sees and everything depends on.
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Garage Conversions
Converting an under-used garage into a warm, usable, building regulations compliant room.
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Electrical Work
Carried out by a qualified electrician we have worked alongside for over 15 years.
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Plumbing & Gas
Handled by a Gas Safe plumber from the same team we have used for over 15 years.
View serviceWhy homeowners choose DBD
A builder who is still on site, still answering the phone
Tom Dobson has been building since he left school — joinery at college first, then years in his father's building company picking up every other trade along the way. Twenty-six years later he still runs the jobs himself, with a team of three to eight tradespeople scaled to the stage of the project.
That matters because the person quoting your job is the person running it. Nothing is passed to a site manager you have never met, and nothing is sold to you by someone who will not be there when the ground opens up.
Work is priced as a fixed quote. If an issue ever comes up after completion, Tom comes back and puts it right — not because a contract forces it, but because that is how the business has lasted this long.
How it works
Four steps from first call to final sign-off
No mystery, no drawn-out sales process. You know what happens next at every stage.
- 01
Free survey
Tom visits, measures up and talks through what you actually want the space to do. No charge, no obligation.
- 02
Fixed price quote
Normally back with you within a week. A fixed price for the scope agreed, so the figure you see is the figure you pay.
- 03
Design & approvals
Where drawings or calculations are needed, we work alongside our architect and structural engineer. Building control is involved from the start.
- 04
Build & sign-off
A team of three to eight trades scaled to the stage of the job, stage payments as we go, and building control sign-off at the end.
Recent work
Projects across Aylesbury and Buckinghamshire
Rear extension & pergola
Buckinghamshire
Porcelain patio & planters
Buckinghamshire
Full width rear extension
Aylesbury
Garden landscaping
Buckinghamshire
New build bungalow
Buckinghamshire
Open plan kitchen extension
Aylesbury
Wraparound rear extension
Buckinghamshire
Two storey rear extension
Buckinghamshire
Areas we cover
Aylesbury, the Chilterns and the surrounding towns
Based in Aylesbury and working throughout Buckinghamshire, including the higher-value areas of Beaconsfield, Gerrards Cross and Amersham.
What clients say
Reputation built one project at a time
Feedback from DBD clients is collected on our Google Business Profile. Reviews appear here automatically as they are published — we don't publish anything we can't attribute to a real customer.
Before you commit
Questions homeowners ask us first
Straight answers, so you know exactly how we work before picking up the phone.
- How much does an extension cost in Aylesbury?
- Every extension is priced individually after a free survey. You receive a fixed price for the scope agreed, so you know the figure before work starts. If you later change the plan and add scope mid-build, that extra work is quoted and charged separately.
- How quickly can I get a quote?
- Surveys are free and normally turned around within a week. Call 07825 776763 or send the enquiry form and we will arrange a time to visit.
- Do you draw the plans and handle building control?
- Plans are produced by the architect and structural engineer we work alongside — we do not draw them in-house. Building control is managed with us at every stage of the job through to final sign-off. Planning applications are normally submitted by the customer, usually via the architect on the job.
- Are you insured?
- Yes. DBD Builders Ltd carries £2,000,000 public liability cover and £10,000,000 employers' liability cover.
- Who carries out the electrics, plumbing and gas work?
- Qualified electricians and Gas Safe plumbers we have worked alongside for more than 15 years. They are brought in on the regulated trades so every element of your project is covered properly.
- What happens if something goes wrong after the job is finished?
- Tom stands behind the work. If an issue comes up after completion, he comes back and puts it right.
- How does payment work?
- A deposit, stage payments through the build, and the balance on completion. Bank transfer is preferred.
Where we are
Based in Aylesbury, working across Buckinghamshire
DBD Builders Ltd
18 Lambourne Avenue, Aylesbury, HP21 9NB
- Monday
- 8am – 6pm
- Tuesday
- 8am – 6pm
- Wednesday
- 8am – 6pm
- Thursday
- 8am – 6pm
- Friday
- 8am – 6pm
- Saturday
- Closed
- Sunday
- Closed
Builders in Aylesbury and across Buckinghamshire
DBD Builders Ltd is an established building and construction firm based in Aylesbury, serving homeowners throughout Buckinghamshire. The business is led by owner Tom Dobson, who trained in joinery at college before working in his father's building company and picking up a full range of trades along the way. Today he leads a dedicated team of between three and eight tradespeople, scaled to suit each project and each stage of the build.
House extensions in Aylesbury are the heart of the business — single-storey rear extensions, double-storey side extensions and wrap-around schemes that change how a whole house works. Alongside extensions, DBD delivers full new-build projects for private clients across Buckinghamshire, taking a site from groundworks and foundations through the structural shell, roofing and internal fit-out to a completed, signed-off home.
The complete building service also covers loft conversions in Aylesbury, garage conversions, home renovations across Buckinghamshire, roofing, landscaping, driveways and patios, kitchen and bathroom fitting, and groundworks and foundations. Plumbing, gas and electrical work is carried out by trusted subcontractors Tom has worked alongside for more than fifteen years, so the regulated trades are always handled by qualified specialists.
For structural and design work, DBD collaborates with an architect and a structural engineer, and manages building control at every stage of the job through to final sign-off. Planning applications are normally submitted by the customer, usually through the architect appointed on the project. That division of responsibility is made clear at survey stage so nothing falls between two parties later on.
Work is priced as a fixed quote following a free survey, which is normally turned around within a week. If the plan changes mid-build and scope is added, that additional work is quoted separately rather than absorbed quietly. Payment runs as a deposit, stage payments through the job and the balance on completion, with bank transfer preferred.
Positioned at the higher end of the market, DBD serves Aylesbury, High Wycombe, Leighton Buzzard, Amersham, Gerrards Cross, Beaconsfield, Chesham, Tring, Wendover, Princes Risborough, Great Missenden and Marlow. The business is fully insured with £2m public liability and £10m employers' liability cover, and Tom stands firmly behind every project — if an issue arises after completion, he returns to put it right.
To get started, call 07825 776763 or request a free survey and we will arrange a time to visit.
Ready to price your project properly?
Free survey, normally within a week, followed by a fixed price for the scope agreed. No pressure, no sales visit — just a builder who has been doing this for 26 years.