The complete builder stack — from raw site photo to handover, in one tool

Editorial note. This is a working tour of the GrehYug product stack as it stands in May 2026. Every capability, count, and number cited below is verifiable in the live product. Concept-grade outputs are clearly labelled as such; a licensed architect's stamp is required before any drawing is used for sanction or construction. We don't sell sanctioned plans — we sell the speed and the structure that lets a licensed architect deliver one faster.

A residential builder in NCR or Bengaluru today is asked to do five jobs that used to belong to five different professionals:

1. Talk to the customer in their language (Vastu, NRI taste, Hindi voice notes, vernacular references)
2. Generate a concept floor plan that respects the plot and the city bylaw
3. Show the customer what the house will look like (elevation render + 12-second cinematic walkthrough + interior styling)
4. Hand the customer something tangible — a magazine, a look book, a Vastu report, a BOQ
5. Track expenses, materials, and progress as the build moves

Doing all five with separate vendors costs weeks of coordination per house. Doing them inside a single platform costs minutes. This essay is a map of how the GrehYug stack delivers each — and where the honest limits are.

What does the GrehYug builder stack include?

In one sentence: 6 paid SKUs (₹999–₹10,999), 40+ free calculators, 17+ states of gazette-verified bylaw coverage, 57 walkthrough library tiles, 540+ Vastu KB entries, all delivered to WhatsApp in minutes — with the licensed architect doing the final sanction stamp.

How does the GrehYug stack compare to alternatives?

1. How does the AI Layout Engine work?

The AI Layout Engine generates a buildable concept floor plan from a single request:

• input: plot width, plot depth, facing direction, BHK count
• output: PDF (PDFKit) + DXF (AutoCAD / QCAD compatible) + Vastu score
• coverage: 8 compass facings (N · NE · E · SE · S · SW · W · NW) with dedicated facing runners and per-facing Vastu policies
• engine: 81-rule Vastu engine built on the Manasara + Mayamata corpus
• DXF format: R2007 (AC1021) with named layers (WALL, PART, DOOR, WINDOW, COLUMN, PARKING, TEXT) — opens cleanly in AutoCAD, QCAD, BricsCAD

The DXF is the handoff artefact for the licensed architect. They open it, edit it, stamp it, and submit it for sanction. The builder's saving is the 6–8 weeks they would otherwise spend in concept iteration.

2. How does GrehYug handle municipal bylaws?

Before the architect even opens the DXF, GrehYug surfaces the local bylaw envelope for the customer's plot:

• 17+ states encoded from official gazettes: Delhi (UBBL, DDA MPD 2021), Haryana (Code 2017 amended 2022), UP Model 2025, Mumbai DCPR 2034, BBMP 2003 (gazette-OCR verified), Pune UDCPR 2020, Hyderabad G.O. 168, Chennai TNCDBR 2019, Rajasthan Model 2025, Gujarat CGDCR 2017, West Bengal WBMBR 2007, Madhya Pradesh BVN 2012, Odisha ODA 2020, Bihar BBL 2014 (+2022 amendments), Punjab PUDA 1996, Chandigarh CBR 2017, Goa GLDBCR 2010, Puducherry 2012, A&N PBMC 1999, DNH-DD 2021, Daman MC, Diu GDR 2024, plus J&K UBBL 2021 and Assam NUA 2014 in encoding-ready state
• plot-tier matching: front, rear, side setbacks computed from plot area and road width — not generic defaults
• disclaimer-first framing: every output says "indicative · verify with your local authority before sanction submission"

This is not a sanction claim. It is a filtering hint for the architect — the most common bylaw failure modes (setback violation, ground-coverage overshoot, FAR exceedance) are flagged at the concept stage, before any drawing is paid for.

3. What does Dṛṣṭi AI deliver for ₹999?

Once the concept floor plan exists — or if the customer brings their own — Dṛṣṭi AI runs a vision-grade Vastu audit:

• upload: any floor plan PDF (CAD-exported, scanned, or hand-drawn)
• AI: GPT-vision extraction → 81-rule engine → remedy generator → 8-page client-facing PDF
• output: room-by-room verdict against the Vāstu Puruṣa Maṇḍala, prioritised remedies, mandala overlay rendered onto the customer's actual plan
• delivery: PDF link + WhatsApp + email, typically in under 90 seconds
• safety: auto-refund triggers if extraction confidence is too low or the model spends approach the cap

For the builder, Dṛṣṭi AI is the trust-builder you can hand the prospect on day one — before any architect commitment, before the customer asks "is this house Vastu?", you already have the document that answers that question with a score and a remedy list. The honest framing (concept-grade, requires architect validation) is built into the cover page; you are not selling a guarantee, you are selling a structured analysis.

4. What's in the Elevation Library?

The Elevation Library ships pre-rendered concept elevations as bundles:

• 5 hero tiles in V1 (Modern Italian · Contemporary Minimalist · Mughal Sandstone Heritage · Gold-Mosaic Luxury · Vernacular Lush Biophilic), plus auto-saving entries from every fresh generation
• per-tile bundle: day-pic 4K PNG, 12-second cinematic camera-orbit MP4 (Seedance 1 Pro 1080p), dimensioned drawing PDF, material specification PDF with real product families (Asian Paints Royale Aspira / Apex Ultima · Fenesta Heritage uPVC · Greenlam Clads HPL · ACP fire-rated cladding · GRC mouldings) at three budget tiers (Economy ₹150–250/sqft · Premium ₹400–650/sqft · Luxury ₹800–1,500/sqft), and a placeholder 2D floor plan
• filters: plot width, floor type (Stilt+2 · Stilt+3 · Stilt+4 · G+2 · G+3 · G+4), budget tier
• price: ₹2,499 (Concept tier) · ₹7,999 (Custom tier with 60-day exclusivity for the builder)

Every elevation orbit video clarifies: 12-second cinematic orbit concept, not a true 360° render. Honest framing, no over-claim.

5. How does the Walkthrough Library work?

The Walkthrough Library is the closing tool. A builder picks one of 55+ pre-rendered cinematic interior walkthroughs, uploads the customer's (or the builder's) visiting card, and the system composites the builder logo plus a GrehYug outro slate, then delivers a branded MP4 in roughly 30 seconds:

• 3 tiers: Budget (Ken Burns slideshow, ₹1,999) · Mid (Seedance i2v with cinematic motion, ₹3,999) · Premium (long-form 70-second cinematic, ₹5,999)
• canonical 9-room sequence: foyer → drawing → dining → kitchen → master → master toilet (with bathtub on Premium tiles) → guest bedroom → puja → balcony
• aesthetic variety: 30+ style families including Light Rose Gold, Italian Black & Gold, Chettinad, Kerala Malabar, Rajasthani Heritage, Mughal Contemporary, Modern Farmhouse, Wabi-Sabi, Biophilic Zen, Dopamine Decor, Organic Modern, Scandinavian, Japandi Zen
• audio: cinematic instrumental tracks (Indian Fusion, Luxury Cinematic, Warm Lounge, Ambient Elegant, Modern Minimal)
• post-production: visiting card → GPT-4o Vision extraction → ffmpeg composite → final delivery, no per-sale AI generation cost

The economic model is honest: library + brand overlay, not per-customer regeneration. The builder pays ₹1,999–5,999 per branded video and owns it forever. Per-customer engine regeneration sits as a Phase-2 premium SKU at ₹15–25K when bespoke is genuinely required.

6. What editorial collateral does GrehYug produce?

For the builder selling a premium plot or a launch project, GrehYug produces the editorial collateral:

• Magazine PDF: luxury editorial property brochure with builder branding, photography placeholders, narrative copy. Built on the partner-magazine route's PDFKit pipeline.
• Look Book PDF: interior style catalog — Modern, Luxury, Traditional Indian (Chettinad / Rajasthani / Kerala / Mughal), Minimalist, Industrial, Tropical, Bold, Eco & Natural — with material palettes, paint shades, and budget estimates
• Interior redesign: at /interior, the builder uploads a raw site or empty-room photo, picks a style (30 options from the Look Book taxonomy), picks a room type, and the AI returns a before/after slider with the redesigned interior. Same flow inside the Builder Portal so the dealer can present to walk-in customers.

This is the layer most online architectural platforms either don't ship at all (no walkthrough capability), or charge an order of magnitude more for — full-service architectural packages in India typically start at ₹22–25/sqft of built-up area. GrehYug's editorial layer is builder-instant: 30 seconds post-payment for the walkthrough, 2–5 minutes for the magazine, less than 2 minutes for the look book.

7. What's the BOQ + ConstructScan handover bridge?

Once the customer commits, GrehYug bridges into construction:

• BOQ (Bill of Quantities): cement, steel, sand, brick, fixtures, fittings — generated against the concept layout's covered area. Indicative numbers, but in a structured format the contractor can edit on site.
• ConstructScan integration: GrehYug's Builder Portal links into the ConstructScan database (a separate Mongo cluster) for expense tracking. The builder's expense flow becomes: site photo → bill extraction → ConstructScan ledger → monthly summary back to the customer.
• Builder Portal: single login, all of the above plus order history, invoice re-download, GST-formatted bills (post-launch polish queue).

This is the only point in the stack where the builder spends real time on the platform every week — everything else is one-shot SKU purchases. The ConstructScan bridge is the retention layer.

8. Which free calculators does GrehYug offer?

Independent of the paid SKUs, GrehYug ships 40+ free calculators that the builder can embed in customer conversations:

Financial: EMI calculator · Home loan calculator · LAP calculator · Loan eligibility calculator · Stamp duty calculator · Balance transfer calculator · Top-up loan calculator · Carpet area calculator

Construction: Construction cost estimator · Area converter (sqft / sqm / cents / guntha / katha)

Vastu / Spiritual (24+ tools): Ayadi calculator (Manasara fruit-of-aaya scoring) · Door height calculator · Foundation Nakshatra finder · Griha Pravesh date validator · House number numerology · Karana check · Pada calculator · Sleeping direction · Vastu apartment · Vastu colors · Vastu commercial · Vastu date validator · Vastu health · Vastu items · Vastu modern · Vastu plants · Vastu remedies · Vastu report · Window guide · South-facing plot helper · Vastu AI chatbot · Vedic birth chart

AI surface: AI Advisor · Dṛṣṭi AI · Dṛṣṭi Build · Dṛṣṭi Snapshot · Scan-my-home · Scientific report

For the builder, this is lead-magnet content — free tools the prospect uses, indexed for SEO (over 40 long-tail pages on grehyug.com), each linking back to the paid SKUs at the relevant moment. For the architect, several of these (Ayadi calculator, Foundation Nakshatra, Pada calculator) are professional-grade utilities they would otherwise consult separately. For the interior decorator, the Vastu colors / Vastu plants / Vastu items calculators are direct client-conversation tools.

9. How does GrehYug use AI avatars for marketing content?

GrehYug publishes social content using 7 AI-generated educational characters (Kavya, Devansh, Aarav, Niharika, Rohan, Diya, and a brand voice). The system is compliance-locked: India IT Rules 2024 + ASCI 2023 disclosures, per-platform AI-content toggles, locked voice IDs (stability 0.60 / similarity 0.65 / style 0.10), CMU-arpabet Sanskrit phonemes for accurate pronunciation. The 46-file knowledge base behind the characters covers Vastu fundamentals, room-by-room recommendations, Indian construction practices, and bylaw basics.

For the builder, the avatar content layer is organic social inventory — every avatar post drives traffic to the calculators and SKUs without per-post creative cost.

10. What does GrehYug intentionally NOT sell?

Everything above is concept-grade. GrehYug does not sell:

• Sanctioned drawings (delisted per legal-liability rule — the NCDRC liability of selling a sanction-graded SKU dwarfs the revenue)
• Slope audit as a customer SKU (concept-fallback only, hill regions need separate engine capability deferred to Phase-2)
• Climate engineering as a paid customer SKU (concept narrative only)
• Bylaw-fit as a marketing claim (filtering hint only, no compliance guarantee)
• 100% Vastu compliance (see our separate essay on why this is impossible)

Every customer-facing output carries the same disclaimer: concept-grade · requires a licensed architect to validate before construction. This is not a hedge — it is the legally honest framing that lets us undercut full-service architectural firms on speed and price while leaving the sanction-graded liability where it belongs (with the licensed architect who stamps the final drawing).

How does a builder run a real customer through the stack?

A walk-in customer at a builder's NCR office, 4 PM Tuesday:

1. 2 minutes: Customer enters plot dimensions on the builder's tablet; AI Layout Engine returns the concept floor plan with the bylaw envelope flagged
2. 90 seconds: Customer uploads their existing floor plan to Dṛṣṭi AI; receives the 8-page Vastu report on WhatsApp
3. 30 seconds: Builder picks one of the 55 Walkthrough Library tiles closest to the customer's taste; uploads builder visiting card; branded walkthrough delivered to customer phone
4. 30 seconds: Builder picks an Elevation Library tile that fits the customer's plot tier and budget; downloads the bundle (day-pic + 12-second orbit + dim drawing + spec sheet)
5. 2 minutes: Builder generates the Magazine PDF with the customer's family photo and contact details
6. 5 minutes: Customer leaves with a WhatsApp folder containing: floor plan, Vastu report, branded walkthrough, elevation bundle, magazine, three Vastu calculators they can play with at home

Total platform spend by the builder: ₹999 (Dṛṣṭi AI) + ₹3,999 (Mid walkthrough) + ₹2,499 (Elevation Concept) + ₹1,999 (Magazine) = ₹9,496. Total customer engagement: 10 minutes. Total architect billing the builder still needs at sanction stage: separate, not included — and that is the honest framing.

A full-service online architectural firm serving the same flow typically charges ₹22–25/sqft on the architectural side and takes 6–8 weeks. Per-project design platforms charge ₹8,000–28,000 in a 3–10 day cycle. AI subscription platforms at the ₹999/month tier generally don't bundle branded walkthrough video or editorial collateral. GrehYug's positioning is speed of concept + structure of analysis + honest hand-off.

Closing

The complete builder stack is one platform, six paid SKUs, 40+ free tools, and a clear concept-grade boundary. A builder, architect, or interior decorator working on a residential project in India in 2026 can run a customer from cold to committed in under 15 minutes, with a Vastu report, a branded walkthrough, an elevation bundle, a magazine, and a BOQ in their hand at the end. The licensed architect is still the one who stamps the final drawing — and that is the responsible structure.

We built the stack so the architect's time is spent on what only the architect can do: validation, tuning, and stamping. The concept work, the editorial work, the customer-facing analysis — that is what GrehYug ships in minutes, so the architect doesn't.

Frequently asked questions

What's the cheapest entry point into the GrehYug stack?

₹999 for Dṛṣṭi AI — an 8-page AI Vastu vision report on any uploaded floor plan PDF. Most builders start here because it lets them put a quantitative analysis in the customer's hand on day one without committing to the full layout SKU. After Dṛṣṭi, the natural next step is Layout Complete at ₹3,999.

Does GrehYug sell sanction-ready drawings?

No. All GrehYug output is concept-grade and requires architect validation before construction or sanction submission. This is intentional: NCDRC (National Consumer Disputes Redressal Commission) liability for code-compliance and life-safety claims dwarfs the revenue from selling sanction-graded SKUs. The four regulatory SKUs (Sanctioned Plan, Slope Audit, Climate Engineering, Bylaw Fit) are intentionally delisted.

Which states' bylaws does GrehYug cover?

17+ states, gazette-verified, covering approximately 93% of urban India. Includes Delhi UBBL, Haryana 2017 (amended 2022), UP Model 2025, Mumbai DCPR 2034, BBMP 2003, Pune UDCPR 2020, Hyderabad G.O. 168, Chennai TNCDBR 2019, Rajasthan Model 2025, Gujarat CGDCR 2017, West Bengal WBMBR 2007, MP BVN 2012, Odisha ODA 2020, Bihar BBL 2014 (+2022), Punjab PUDA 1996, Chandigarh CBR 2017, Goa GLDBCR 2010, Puducherry, A&N PBMC, DNH-DD, with J&K UBBL 2021 and Assam NUA 2014 in encoding-ready state.

How fast can a builder run a full customer demo through the stack?

Under 15 minutes from cold to committed, with a Vastu report, branded walkthrough, elevation bundle, magazine, and BOQ in the customer's WhatsApp at the end. Sample mix: ₹999 Dṛṣṭi AI + ₹3,999 Mid walkthrough + ₹2,499 Elevation Concept + ₹1,999 Magazine = ₹9,496 platform spend per customer.

How does GrehYug compare to full-service architectural firms?

Faster, cheaper, and concept-grade only. Full-service architectural firms in India charge ₹22–25/sqft (₹66,000–₹2,50,000 on a typical 1,000–3,000 sqft project) and take 6–8 weeks. GrehYug delivers the concept layer in minutes for ₹3,999–₹10,999 — but the licensed architect's sanction stamp is a separate engagement. The positioning is speed of concept + structure of analysis + honest handoff, not full-service replacement.

What's the size of GrehYug's Vastu knowledge base?

540+ entries sourced from Manasara, Mayamata, Brihat Samhita, Baudhayana Sulba Sutras, Vāstoṣpati Sūkta, and Śālā Sūkta — verified verbatim against the Sanskrit source texts. Used to power both the AI floor plan engine's 81-rule scoring layer and the 24/7 GrehYug AI Advisor chatbot.

Sources

• GrehYug AI Layout Engine V26 — production at /auto-plan and /layout-web
• Dṛṣṭi AI — production at /tools/dristi-ai
• Elevation Library V1 — production at /elevation-library
• Walkthrough Library — production at /walkthrough-library (55+ tiles live)
• Interior redesign — production at /interior (30+ styles)
• Bylaw coverage — 17+ states gazette-encoded (Delhi UBBL · Haryana 2017 · UP Model 2025 · Mumbai DCPR 2034 · BBMP 2003 · Pune UDCPR · Hyderabad G.O. 168 · Chennai TNCDBR · Rajasthan Model 2025 · Gujarat CGDCR · WBMBR · MP BVN · Odisha ODA · Bihar BBL · Punjab PUDA · Chandigarh CBR · Goa GLDBCR · Puducherry · A&N PBMC · DNH-DD · J&K UBBL · Assam NUA)
• Free calculator suite — 40+ tools at /tools/*
• ConstructScan — Builder Portal expense bridge
• Avatar content compliance — content/avatars/COMPLIANCE.md (India IT Rules 2024, ASCI 2023, per-platform disclosure)