Extensions & additions
Single- or two-storey extensions, side or rear additions, porches and other projects involving structural work and coordination with other trades.
Builder Stevenage
Planning an extension, renovation, structural alteration, conversion or substantial repair? Post the project once and suitable builders covering your Stevenage postcode can get in touch. Compare relevant experience, scope, programme and price before deciding who feels right for the work.
Use the project postcode and describe the property, proposed work and stage you are at. Stevenage combines a historic Old Town with the UK's first post-war New Town and major ongoing regeneration in the centre. The Stevenage Borough Local Plan 2011–2031 was adopted in May 2019, and a Partial Update incorporating examined modifications was adopted by the council in July 2026.
Building projects large and small
A general builder may take on anything from masonry repairs to a multi-trade renovation. Larger projects are easier to compare when every builder receives the same drawings, specification, structural information and statement of responsibilities.
Single- or two-storey extensions, side or rear additions, porches and other projects involving structural work and coordination with other trades.
Whole-room or whole-house improvement projects involving strip-out, repair, reconfiguration, making good and coordination between several trades.
New openings, wall alterations and structural supports where the work follows appropriate design, calculations and the required approval route.
New walls, repairs, repointing, steps, blockwork and other masonry where a general builder or brickwork specialist is appropriate.
Garage, loft-adjacent or internal reconfiguration projects that change how existing space is used, subject to design and permissions.
Local masonry, structural and building-fabric repairs, making good after other trades and work that goes beyond a typical handyman visit.
Building costs vary widely by project size and specification. Current Stevenage data gives useful local benchmarks:
Indicative guidance checked August 2026. Checkatrade currently shows general building services in Stevenage at about £10,119 on average, with a typical range around £5,428–£17,181. Extensions average about £35,702 and loft conversions about £37,195.
Comparable quotes start with a comparable brief
Standardise the information before comparing totals so inclusions such as scaffolding, waste, steelwork and specialist trades are clear.
Across Stevenage
The postcode helps narrow your request to tradespeople who regularly cover Stevenage town centre, Old Town, Bedwell, Broadwater, Chells, Shephall, Pin Green and Symonds Green.
Stevenage is in the middle of a major regeneration programme. The council describes a £1 billion town-centre programme, while the Stevenage Station Gateway is planned to deliver around 1,000 new homes, up to 60,000 square metres of commercial space and about 1,500 jobs. The Local Plan Partial Update was adopted in July 2026.
How it works
Describe the project once, share the information you already have and let builders who cover the postcode decide whether the scope fits their team and programme.
Enter the Stevenage postcode, describe the work, project stage, drawings or approvals you have and your preferred timing.
Your requirements can be matched through our partner network, and up to 3 local tradespeople can contact you about the project.
Compare relevant project experience, scope, exclusions, programme, communication and price before deciding who to hire.
Choose with confidence
For substantial work, compare more than the total price. Look at relevant experience, the clarity of the written scope, how the project will be managed and what happens when design or site conditions change.
Ask for recent examples and references from work similar in scale and complexity. Extensions, structural alterations and full renovations demand different planning from small repairs.
For larger work, agree the scope, insurance, programme, variation process and staged payments in writing. Avoid vague arrangements that make inclusions hard to judge.
Clarify who is responsible for drawings, structural design, planning matters, Building Regulations, inspections and completion paperwork before work begins.
Useful answers
Practical answers before you post a building project in Stevenage.
Enter the project postcode and describe the work, scale and current stage clearly. Your request can then be matched with suitable builders who cover that part of Stevenage, allowing you to compare up to 3 responses.
Current Checkatrade Stevenage guidance shows general building services at about £10,119 on average, with a broad range around £5,428–£17,181.
Checkatrade currently shows Stevenage extensions at about £35,702 on average, with a broad range around £22,203–£57,936. Size, structure, specification and access can move the final price significantly.
It depends on the size, design, property and permitted-development rights. Check the exact proposal with Stevenage Borough Council and confirm any Building Regulations requirements separately before work starts.
The Stevenage Borough Local Plan 2011–2031 was adopted on 22 May 2019. A Partial Update, incorporating the examined Main Modifications and updated proposals map, was adopted by Stevenage Borough Council in July 2026.
No. Posting the project does not oblige you to hire anyone. Compare written scopes, programme, experience and price before deciding.
Post the building project once, let suitable local builders come to you and compare your options before deciding who to hire.
More local trades
Browse every GetTradesmen trade page currently published for Stevenage.