Specialist in House Extensions - Home Builders Hertford

Stag Builders of Hertfordshire, are a family run building company providing building services in the Hertford region. We have always been keen on renovating properties, building kitchen extensions, and specialising in loft and garage conversions. With our experience and knowledge, we can make sure that your home and your project are in good hands.


Our building services in the Hertford area, are carried out with a high level of professionalism, and we believe that being a family run business, personal communication and care with our clients is central to our success.

We hope that the photos and information on our website give you an idea of what we do. Please contact us via our contact form, or if prefered, call us to arrange a survey of your property. By visiting your property, we can generate a fixed price quotation helping you to budget, for your forthcoming project. We pride ourselves on a high standard of work, and reliability.

Property Extensions In Hertford

What are the different types of house extensions?

The term ‘house extension’ simply refers to any structure that’s added to the original building. This can be a loft extension, basement extension, a kitchen, a living space, or even a new bedroom. Extensions can be made from a variety of materials: from simple brick & block to more expensive, luxury designs, such as those including structural glass.

House extension companies in Hertford should be familiar with period properties. When extending or modifying a period property, it’s important that you know what to look out for. These properties were designed and built decades ago. While they all appear to follow a certain symmetrical pattern, no two properties are the same. All of them have their own quirks. In addition to this, over the decades, they have all been cared for and adapted in different ways. 

Undertaking a home renovation or extension is a substantial project, both in a financial commitment and from a time perspective. We thought we would talk you through three of the main things to consider if you are thinking of undertaking a home renovation or using specialist builders to build your house extension in Hertford.  

Dormer Loft Conversion

Dormer Loft Convertion Hertford

Rear House Extension

House Exstension Hertford

What’s the difference between a first and second fix?

If you’re planning any kind of house extension or loft conversion in Hertford, you’ve probably heard someone using the terms "first fix" and "second fix", but what do they mean?

All home extensions start with a set of awesome architectural floor plans, and either a planning application or lawful development certificate application. But once you’ve actually started construction, you can think of the “first fix” and “second fix” as the two main stages of your building project.

It’s important to know the difference between these two stages, as it’s likely that individual contractors - including plumbers and electricians - will need to come back to finish different jobs during each fix.

Contingency Budget

In general terms, it depends on the project. For a ground floor house extension in Hertford, you are digging down into a territory that is largely unknown prior to the opening up building works commencing. From time to time, there might be issues with the property foundations which might mean there is additional work required by your builders. When it comes to a loft conversion, there is generally very little that crops up unexpectedly. You aren’t uncovering much and so there is very little is unknown prior to the commencement of the Building works.  

Hertford: 01992 691 690

Primary areas we operate: Builders near me..

Bricketwood, Knebworth, Stevenage, Potters Bar, Brookmans Park, Radlett, Shenley, Wheathampstead, St Albans, Watford, Hertford, Hatfield, Welwyn, Ware, Welwyn Garden City, Harpenden, Redbourn, Codicote, London Colney, Panshanger, Marshalswick, Jersey Farm, Hitchin, Letchworth, Baldock, Hemel Hempstead.