Home Extension




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Home Extension Barnet EN5

When these clients purchased their lovely property in High Barnet, they engaged our in-house design and build services to transform it into a comfortable, modern home while retaining its beautiful period details. Our architectural team visited the site to understand the client's needs before presenting design plans.

A home extension open view to the garden by TipTopContractors

The approved plans included:

Our Ready to Build Package provided all necessary drawings, agreements and notices to obtain lawful development consent.

The project ran smoothly under building control supervision, with wraparound scaffolding protecting the home. 

We guided the clients through each stage, from the kitchen extension's roof skylights and a mixture of glazing openings to the garden. The new kitchen, designed and installed by us,
Our 10-year structural guarantee and 12-month finish warranty ensured quality workmanship.

From start to finish, our expertise delivered a sympathetic, comfortable transformation reflecting modern living while retaining this home's period beauty.

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Adding living space with a home extension often requires significant investment, leaving homeowners asking:
How much will a home extension cost in 2023? While a small 15-25m2 extension can be built for £25,000-£35,000, larger extensions get more expensive. Key questions include -
How much does a 25m2 extension cost (around £30k if single storey), and What is the maximum house extension without planning permission (typically 4-6m for terraced houses if meeting building regulations)?

Homeowners should also research rules on total allowable increased footprint. While a 4m rear or side extension on a semi-detached house meets typical allowances, adding extra bedrooms could breach the maximum 40-50% increase permitted.

Carefully planning home extensions within permitted development rights simplifies approvals. Getting quotes from architects and builders early also allows homeowners to budget realistically. With careful design and expert project management, home extensions can add worthwhile living space without spiralling beyond original budgets.


happy clients


The top line summary is that Nick and his team did a fantastic job. The GF of our 3B semi with existing extension was all open plan. Works incl. Creating a separate lounge, open plan kitchen/diner, removing structural walls, new flat roof, new patio, external drainage and timber sleeper retaining wall. New plumbing and electrical installations. Nick's quote was a fair price for the works, he kept within the budget and completed the works within the timeframes initially outlined. This is not the first time Nick has done work for us, and it won't be the last. Very pleased with the overall result.

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