167-169 Great Portland Street, London United Kingdom
Fixed Transparent Fees No Hidden Council Revision Costs
1 Select Your Project Type
Rear House Extension Single or multi-storey
Loft Conversion Dormer, Mansard, Hip-to-Gable
Load-Bearing Wall Internal RSJ beam removal
Double Storey Extension Large residential expansion
Flat / HMO Conversion Subdivision into units
New Build Dwelling Full structural & design
2 Select Service Package
Architectural Only Planning & Permitted Dev Plans
Structural Only RSJ Beams & Calcs Pack
Complete Full Pack Architectural + Structural + Regs
3 Select Turnaround Delivery
Standard Turnaround Thorough review & drafting
Express Fast-Track (48-72h) Immediate priority engineering

Estimate Summary

Selected Project: Rear House Extension
Service Scope: Complete Architectural & Structural
Est. Delivery: 2 - 3 weeks
Compliance: Part A & Part L Included
Estimated Professional Fee
£1,462
Estimated Timeline: 2 - 3 weeks

*All quotes subject to site-specific conditions and final structural survey review.

What Is Included In Every Package?

Feature / Deliverable Architectural Only Structural Only Full Combined Pack
Existing & Proposed 2D Floor Plans ✔ Included — ✔ Included
Planning Portal Application Management ✔ Included — ✔ Included
RSJ Steel Beam Calculations & Sizing — ✔ Included ✔ Included
Padstone & Foundation Engineering — ✔ Included ✔ Included
Building Control Approved Cover Letter — ✔ Included ✔ Included
Council Technical Query Response Guarantee ✔ Free Support ✔ Free Support ✔ Priority Direct Line