A Smart Investment in Your Home
A Spectra Extension looks and feels exactly like a traditional build — matching your existing property seamlessly — but completed in just 4-5 weeks by our experienced builders with a fixed price guarantee.
Pricing Guide
We offer flexible pricing discussions with all our clients. As a planning reference point, we recommend budgeting:
Why Choose a Spectra Extension
Our engineering-led approach delivers real advantages over traditional building methods:
- Built in weeks, not months — screw pile foundations install in days, and our build programme is up to 50% quicker overall, meaning less disruption to your home
- Precision engineered — every element is individually designed for your property, delivering a superior finish with minimal waste
- Fixed price guarantee — your confirmed price is guaranteed in writing, so you know exactly what you're paying from day one
Every Spectra Extension is individually engineered using our advanced building technologies. Whether you're planning a rear extension, side extension, or kitchen extension, the price shown is intended as a guide only — your tailored quotation will reflect your specific project requirements.
Typical Timelines
Our advanced construction methods mean your extension is built in weeks, not months:
Single Storey
4-5 weeksTimelines are approximate and vary by project complexity, weather conditions, and site access. RADIX screw pile foundations install in just 1-2 days, giving you a head start over traditional builds.
Detailed Quotations
Once we understand your project specifics through our consultation and survey process, we provide comprehensive quotations that clearly outline all costs. There are no hidden fees or unexpected expenses with Spectra Extensions.
Our quotations break down costs by trade and include all materials, labour, and finishing work so you know exactly what you're paying for.
No Hidden Costs
Everything is itemised clearly in your quotation
Fixed Price
Your confirmed price won't change unless you request extras
Detailed Breakdown
Costs broken down by trade for full transparency
Free Consultation
No obligation site visit and initial estimate