Here are options and practical next steps for getting custom home design services in Bangalore — firms to consider, what they offer, typical cost ranges, how to choose, and what to expect.

Recommended firms / platforms (with what they’re known for)

• HomeLane — large Bangalore‑headquartered, end‑to‑end interior & modular solutions; known for standardized processes and warranties (suitable if you want predictable timelines for interiors and modular kitchens). (en.wikipedia.org)
• Houzlook Home Interiors — bespoke/interior studio in Bangalore offering custom interiors, 3D walkthroughs and warranty/turnaround claims (good for fully bespoke interiors with in‑house manufacturing). (design.Houzlook.com)
• TheHouseKraft — positions itself on precision manufactured/custom cabinetry and full project management (useful when you want tight control over factory‑made cabinetry and schedules). (TheHouseKraft.com)
• Perfect Space Design Studio — boutique studio offering end‑to‑end interiors, transparent pricing and sample warranty information (suitable for turnkey packages and modular + custom joinery). (perfectspaceinterior.com)
• Local boutique studios (examples: Akarsh Designs, WEA Designs) — smaller studios often provide higher personalization for villas and high‑end custom homes; good if you want concept‑led design and more hands‑on design director involvement. (akarshdesigns.com)

What each type of provider typically handles

• Architects / residential architects: full home architectural design (site layout, structure coordination, permits, elevations, MEP coordination). Ideal if you’re building a custom house from scratch. (See local architects and firms for portfolio match.)
• Design‑build / interior firms: interiors, custom furniture, modular kitchens, finishes, and often turnkey execution. Best when the shell exists or you want single‑vendor delivery.
• Bespoke cabinet/manufacturers: focus on precision joinery, wardrobes, kitchens — engage alongside an interior designer or architect.
• Project management / contractors: execute construction works; many interior firms offer in‑house PM to coordinate trades and timelines.

Ballpark costs (typical ranges — India / Bangalore)

• Interior fit‑out (end‑to‑end, mid‑range): ~₹1,200–₹2,500 per sq ft.
• High‑end bespoke interiors / luxury villas: ₹2,500–₹6,000+ per sq ft depending on materials & customization.
• Modular kitchen (mid to high): ₹1–4 lakh (simple) to ₹6–15 lakh (premium, appliances included).
• Custom architectural design fees: often 5–10% of construction cost (can vary by architect and scope). Note: these are estimates and can vary widely by scope, location, finishes, and the firm’s positioning — confirm with quotes before committing.

How to choose the right firm (stepwise)

1. Define scope: full architectural design + execution, or only interiors/fit‑out? New build vs renovation vs villa.
2. Shortlist by portfolio: ask for 3 recent projects similar in scale/style to yours (photos + site visits if possible). Check workmanship details, not just moodboards.
3. Ask for process + deliverables: timelines, 2D/3D deliverables, material samples, approvals, and contract milestones.
4. Warranties & post‑handover support: get written warranties for woodwork, finishes, and workmanship.
5. Payment & contract: prefer milestone‑based payments tied to deliverables; include change‑order rules.
6. References & site visits: speak to past clients about timeline adherence, hidden costs, and communication.
7. Permits & coordination: confirm who handles approvals, structural drawings, and MEP coordination.

Questions to ask each firm when you contact them

• Do you handle architecture + interiors + execution (single point responsibility)?
• Can you show recent projects of the same typology and budget? May I contact those clients?
• What is the estimated timeline and key milestones? Any guaranteed delivery windows?
• What warranties do you provide (woodwork, painting, electrical)? Are they written in the contract?
• How do you handle change orders and cost overruns?
• Will you provide a detailed bill of quantities (BOQ) and scope before work starts?

How to proceed (practical next steps)

1. Prepare a short brief: location in Bangalore, built‑up area (sq ft), photos or site plans, rough budget, must‑haves, and style references.
2. Contact 3 firms (one large/platform, one mid‑tier, one boutique) with the brief and request a written proposal and scope. Use the companies above as a starting shortlist. (en.wikipedia.org)
3. Compare proposals on scope, timeline, materials, warranties, and total cost — don’t pick on price alone.
4. Meet final candidate(s) for an in‑person walkthrough and get a detailed contract with milestones.
5. Keep a retained buffer (typically 10–15%) for unforeseen site changes.

If you want, I can:

• Shortlist 4–6 Bangalore firms matched to your exact brief (budget, style, new build vs renovation, approximate area).
• Draft an email/brief template you can send to firms to get consistent proposals.
  Tell me which of the two you prefer and give one-line details: budget range, whether new build or renovation, and approximate built area (sq ft).