Key Takeaway
Compare Hampshire Build's three fixed-fee extension designer packages — Pre-Build Package (£1,950), Premium Package (£2,950), and Premium Plus Package (£4,950) + VAT. Find out which is right for your project.
Hampshire Extension Designer Packages: Complete 2026 Comparison Guide
All three Hampshire Build packages are fixed fee — no hourly billing, no open-ended costs. The price you're quoted at the start is the price you pay. Here's a clear comparison of what each package delivers:
Pre-Build Package — £1,950+VAT (Most Popular)
Perfect for: Homeowners who want a complete, builder-ready drawing package at a fixed fee.
What's included:
- On-site measured survey of your property
- Planning drawings (plans, elevations, sections, site plan)
- Planning application submission and council liaison
- Building regulations drawings
- Certified structural calculations
- Construction detail drawings for your builder
The Pre-Build Package is the most popular choice for kitchen extensions, rear single-storey extensions, two-storey additions, and loft conversions. It gives your builder everything needed to price the work accurately and start on site.
Premium Package — £2,950+VAT
Perfect for: Homeowners who also want contractor proposals managed by their designer.
What's included:
- Everything in the Pre-Build Package, plus:
- Detailed schedule of works
- Tender to two vetted contractors from our established panel
- Comparative proposal report
- Client building contract template with milestone payments
The Premium Package is ideal when you don't have an existing contractor relationship and want competitive, like-for-like proposals from trusted local builders — all handled for you.
Premium Plus Package — £4,950+VAT
Perfect for: Homeowners who want on-site presence throughout construction as well as complete design and contractor management.
What's included:
- Everything in the Premium Package, plus:
- 2 structural design revisions included
- 2 on-site superstructure visits with written inspection reports
- Continual remote support throughout the build
Premium Plus Package puts a designer alongside you from first sketch to practical completion — the most comprehensive fixed-fee service we offer.
Fixed Fee vs Traditional Hourly Rates
Traditional extension designers charge £80–£150 per hour with no price certainty. Our Pre-Build Package delivers the same drawing set at £1,950+VAT — a saving of £2,000+ on typical hourly-rate costs. All packages include a £250+VAT deposit to secure your appointment, with the balance due on completion of your design consultation.
Which Package Is Right for You?
Choose Pre-Build Package if: You have a trusted builder, or are confident finding one, and need a complete builder-ready drawing package at a fixed price.
Choose Premium Package if: You want us to manage the contractor tender process and handle your building contract alongside the drawings.
Choose Premium Plus Package if: You want your designer on site during construction with written reports and continual remote support throughout the build.
Book your complimentary consultation to discuss which package suits your Hampshire extension. No obligation — just straightforward expert advice.
