Expert Roofrooms, Renovations & Extensions

Expanding Your Living Space with Precision Timber & Light Steel Framing

Transform Your Home with TJ Roofrooms

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Whether you are looking to add a luxurious master suite in your attic or extend your ground floor for a modern open-plan living area, we bring your vision to life.

We specialize in high-quality residential construction, focusing on innovative structural solutions that add value and square footage to your property.

Our Core Specializations

Transform Your Home with TJ Roofrooms

Whether you are looking to add a luxurious master suite in your attic or extend your ground floor for a modern open-plan living area, we bring your vision to life. We specialize in high-quality residential construction, focusing on innovative structural solutions that add value and square footage to your property.

get a free quote

Our Core Specializations

Why We Use Timber & Light Weight Steel

We are leaders in alternative building technology. By utilizing Light Weight Steel (LWS) and Structural Timber, we offer:

Interactive budget tool

Roof-Room & Loft Conversion Packages

Transform your unused roof space into beautiful, functional living areas. Choose the package that best fits your lifestyle, budget, and project scope.

Choose Your Package:


Included in this package:

  • Full Structure & Access: Complete house frame and structural build, aluminium windows, and staircase access.
  • Electrical: Full electrical installation [excluding light fittings]
  • Plumbing Labour: Professional installation for 1 complete bathroom (client supplies sanitaryware, copper, and PVC materials).
  • Finishes & Drainage: Full interior painting (client supplies colour paint) and PVC gutters with downpipes.

Roofrooms and Loft Rooms Size:
20 m²

Move the slider below to estimate your project cost.

20 m²
75 m²
150+ m²

Architectural and Engineers from: R50 000
Tick to include architectural and engineering costs in your estimate.

*Estimates represent typical turnkey construction rates in South Africa including structural framing, roof tie-in, insulation, and finishes. Subject to formal on-site structural engineer assessment.

Estimated Budget

High Value Asset ROI
Ballpark Turnkey Range (ZAR):
R 200 000 – R 240 000
Based on 20 m² (STANDARD fitout @ ~R10 500/m²)
Estimated Duration:4 to 6 Weeks
Foundation Underpinning Needed:Usually 0% (Lightweight advantage)
Rental relocation cost saved:~R45,000 – R90,000
Live in your home while we build a roof-room
Capital Value Added to Home:Up to 130% of build cost


Lock In The Quote

Includes roof inspection, structural load audit & layout suggestions.


The Trusted Choice for Your Home Project

Finding a reliable building contractor can be daunting
At TJ Roofrooms we pride ourselves on:

"Our mission is to provide high-quality workmanship and innovative spatial solutions that turn your current house into your dream home"

Ready To Start Your Renovation?

Don't settle for less space when you can build up or out. Contact the premier construction and renovation specialists today

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South Africa’s experts in: Roofroom construction, attic conversion, Light Weight Steel, Timber framing, home extensions, house renovations, building contractor, structural additions.

We are registered with the CIPC as a legal entity

We are registered with NHBRC. NHBRC Reg No: 1-50377227

We are a proud level 2 BEE compliant Construction Company

We are registered with COID