House Extensions Knowle
We are Federation of Master Builders members with over 20 years' experience.

Quick answer
We are Federation of Master Builders members with over 20 years' experience. We deliver house extension projects throughout Knowle and the surrounding West Midlands, including Dorridge, Bentley Heath and Solihull, handling the drawings, planning, building regulations and construction in-house.
Flexible House Extensions in Knowle
Knowle's historic core around the High Street has been a designated Conservation Area since 1968, with 53 listed buildings close to the medieval church of St John the Baptist, St Lawrence and St Anne. Extending a property in or near this part of the village calls for a different approach than a standard rear extension, and HK Builders has over 20 years of experience getting that balance right.
Away from the historic centre, Knowle also has large areas of detached and semi-detached housing built from the 1950s onwards, where there's typically more flexibility to extend without the same heritage constraints. We assess which situation your home falls into before we recommend anything, rather than offering the same design regardless of location.
Whichever part of Knowle you're in, we manage the whole job ourselves, from the planning application and any heritage considerations through to building regulations and the construction itself, so you have one team accountable for the result rather than several contractors to chase.
Increase Your property's Value
Knowle's mix of period cottages near the village centre and larger post-war family homes further out means there's no single “typical” extension here. A couple extending a cottage close to the High Street has very different priorities to a family adding a two-storey side extension on a 1960s plot, and we price and design accordingly rather than quoting off a single standard spec.
What doesn't change is the value a well-executed extension adds. Buyers searching in Knowle are often drawn by the village's schools, the High Street and the surrounding countryside, so a sympathetically extended home that still fits that character tends to hold its appeal when it comes to resale.
We've built a good working relationship with Solihull's planning and building control teams through years of projects in this part of the borough, which tends to make the approvals process smoother and more predictable for homeowners here.
Executing every detail with care and precision
Every Knowle project begins on site, not at a desk. We walk the property with you, note the position relative to the church and High Street where relevant, check the construction of the existing house, and talk through what the finished space needs to do for your household.
Our in-house design team then produces plans that respond to that context, whether that means matching brick detailing on a period property or simply making the most of a larger plot further from the centre. We prepare and submit the planning application to Solihull Metropolitan Borough Council and manage building control from first inspection to completion certificate.
Construction is carried out by our own tradespeople rather than a rotating cast of subcontractors, with one site manager as your single point of contact throughout. We agree a realistic programme up front and tell you immediately if anything on site changes it.
To talk through a house extension in Knowle, get in touch with HK Builders for a free, no-obligation quote.
Many extensions in Knowle fall under permitted development, so full planning permission may not be needed. Larger or double storey extensions usually require approval from the local council. We check this for you before work starts.
A typical single storey extension in Knowle takes around 8 to 12 weeks on site; larger or double storey projects can take several months. We give you a clear programme before we begin.
In most cases, yes. A well built extension that adds usable space, a larger kitchen, extra bedroom or open plan living area, is one of the most reliable ways to increase a property's value in Knowle.
Highly rated team!
Our team has been in the industry for years, providing clients throughout the West Midlands with high-quality building services. Our experts have built a strong reputation for consistently delivering excellent workmanship and always striving to exceed client expectations.
Take a look through the reviews from our existing customers to see what people say about our services. If you are an existing customer, feel free to leave our team a review on our review platforms. We always appreciate hearing your feedback.































