Granny flats, room additions and second story extensions in Lonehill and surrounding Johannesburg North suburbs. Estate and CoJ approvals fully managed. Free written quote, no obligation.
We are Scotch Score Holdings — building contractors operating daily across Lonehill, Fourways and Johannesburg North. Whether you're in Lonehill Estate or a freehold property, we handle the full process from architectural drawings and approvals through to completion. Part of our broader building extensions service across Gauteng.
Lonehill is one of Johannesburg North's most popular areas for granny flat builds — strong rental demand, good schools nearby, and freehold properties with space. We build complete self-contained units from R280,000 including plans, CoJ approval and construction. Typical rental income R7,000–R10,000/month.
Many Lonehill homes were built on smaller stands — adding upstairs is the best way to increase living space without losing garden. We handle full structural engineering, first-floor slab, staircase and all finishes. Two bedrooms upstairs typically R450,000–R850,000.
Single room extensions are common in Lonehill townhouses and cluster homes. Extra bedroom, home office, playroom or kitchen extension — all handled with full plans and CoJ approval. From R90,000 for a single room addition.
If you are in Lonehill Estate, HOA approval must come before CoJ submission. We know the process, submit compliant drawings and manage the back-and-forth so your project doesn't stall. Estate approval typically 2–4 weeks.
We work with registered architects and structural engineers to produce CoJ-compliant drawings. We submit, track and follow up with the City of Johannesburg on your behalf. Permit approval typically 6–10 weeks from submission.
One point of contact from design through to handover. We supply materials, manage subcontractors and provide weekly progress updates. Every project comes with a written 2-year workmanship warranty and completion certificate.
Indicative prices. Your free written quote will give you an exact figure based on size, finishes and site conditions. All prices include plans, CoJ approval and full construction.
Prices are indicative for Lonehill 2026. Site-specific conditions may affect final cost. Get your free written quote.
Lonehill Estate, Lonehill Gardens, Lonehill freehold properties — estate HOA and CoJ approvals both handled.
Fourways, Fourways Gardens, Broadacres, Dainfern, Norscot Manor.
Douglasdale, Bryanston, Sunninghill, Rivonia.
Sandton, Hyde Park, Morningside, Illovo, Parkmore.
Randburg, Northcliff, Bordeaux, Robindale, Windsor.
We cover all Gauteng. See our full extensions page or call 073 814 7376 to confirm your area.
Real feedback from Gauteng clients. Read all 41 reviews on Google.
"Second story addition in Lonehill. City approval took 8 weeks, construction 5 months. Scotch Score handled everything including the estate approval. Now we have 3 extra bedrooms and the finish is excellent."
— Sarah T., Lonehill Estate"Built a granny flat for my mother in Lonehill. They managed the HOA submission, all the CoJ plans and the full build. Completed on time and we're already renting it for R8,500/month."
— David M., Lonehill"Added a home office and extra bedroom. Written quote was accurate, timeline was realistic and they kept to it. No surprises on cost. Would use again."
— Natasha K., Johannesburg NorthFrom R90,000 for a single room addition. Granny flats R280,000–R520,000 depending on size. Second story additions R450,000–R850,000. All prices include plans, CoJ approval and full construction. Free written quote after a site visit — no call-out fee.
Yes — we manage the full HOA submission including compliant architectural drawings. Estate approval typically takes 2–4 weeks. We then submit to City of Johannesburg (6–10 weeks). You don't need to deal with the admin at all.
Room addition: 6–10 weeks from breaking ground. Granny flat: 10–16 weeks. Second story: 4–6 months. Plan approval from CoJ typically 6–10 weeks before construction starts. We give you a realistic written timeline before work begins.
R7,000–R10,000/month for a well-finished unit. Lonehill has strong rental demand due to schools, security and access to Fourways. Most Lonehill granny flats pay back their construction cost within 3–4 years through rental income alone.
Yes — all structural work in Lonehill requires approved plans and a CoJ building permit. If you're in the estate, HOA approval must come first. Building without approved plans risks a demolition order and problems when selling. We handle all submissions.
Yes — Scotch Score Holdings (Pty) Ltd, CIPC registration 2025/257893/07. Based in Gauteng with teams operating across Lonehill, Fourways and Johannesburg North daily. Verify our registration here.
We operate permanently across Johannesburg North — not a company sending teams from out of province. We know Lonehill Estate, CoJ submission requirements and local suppliers well.
Scotch Score Holdings (Pty) Ltd — Registration 2025/257893/07. A traceable, accountable registered company. Verify our registration here.
Every quote in writing before work starts. Every completed project includes a written 2-year workmanship warranty and completion certificate — no verbal promises.
41 verified Google reviews from Gauteng homeowners. Read our reviews.
Free site visit and written quote. We respond within 2 hours during business hours.