duplex

By the Property Law Team | Legal Brigade | Bar Council of Karnataka

Buying a duplex or row house in Bangalore requires two-layer verification — the individual plot’s title chain and boundary demarcation alongside the building’s plan sanction and OC — because the buyer owns both the plot and the structure, making this verification scope closer to a plot purchase than a standard apartment purchase.

What Makes a Duplex or Row House Legally Different From an Apartment?

An apartment buyer purchases a unit within a larger approved structure — the plot belongs to the entire project collectively through UDS. A duplex or row house buyer typically purchases an identified plot with an individual building on it — meaning they own the land and the structure as separate but linked assets. This dual ownership creates a verification requirement that covers both the plot’s title and the building’s compliance — neither can be skipped.

Duplex and row house purchases in Bangalore — particularly in gated community developments — are among the highest-value residential transactions in the city. Legal Brigade’s verification work on these properties consistently finds the most common gap is at the plot demarcation level — where the physical boundary does not match the sale deed description.

What Are the Specific Legal Risks in Duplex and Row House Purchases?

What Is a Shared Wall Agreement and Why Is It Needed for Row Houses?

In a row house development, adjacent units share a party wall — the structural wall between two units. The rights and responsibilities in relation to this shared wall — who can build against it, who maintains it, what happens if one unit requires reconstruction — should be documented in a shared wall agreement or in the master layout’s terms. An informal arrangement where each unit owner assumes they can do what they like with the shared wall is a recipe for a neighbour dispute.

See Legal Brigade’s complete boundary dispute guide at /boundary-dispute-lawyer-bangalore/

How Do I Verify the Plot Boundary for a Row House in Bangalore?

1. Obtain the tippani (survey sketch) for the specific plot number from the survey department and confirm the dimensions and cardinal boundaries. The tippani is the official government record of the plot’s measurements and its relation to adjacent properties. Without this document, a buyer has no official reference against which to compare the physical site.
2. Commission a licensed surveyor to physically visit the row house and measure the actual boundaries against the tippani — any mismatch must be investigated before purchase. A licensed surveyor’s report carries evidentiary weight and can identify encroachments, boundary shifts or discrepancies that are not visible to an untrained observer.
3. Compare the physical boundaries with all four adjacent properties — confirm no encroachment from any side. Encroachment can come from any direction — a neighbour’s compound wall extending onto the plot, a common driveway being claimed by an adjacent unit, or a drainage channel cutting across the boundary line.
4. Confirm the sale deed schedule correctly describes the plot by its dimensions and boundaries — any discrepancy between the tippani and the sale deed should be raised with the seller before registration. The sale deed is the document that transfers title — if it describes a plot that does not match the physical reality, the buyer receives something different from what they inspected.
5. For row houses within a gated community — confirm the master layout plan allocates the correct plot to the specific unit being purchased and that the plot dimensions are consistent across the master plan and the individual sale deed. Gated community developments sometimes renumber plots or adjust allocations during construction, creating a mismatch between the master plan and the individual unit’s documentation.

What Is the Difference Between a Row House in a Gated Community and a Standalone Duplex?

Frequently Asked Questions

Q1. What makes buying a duplex or row house different from buying a flat?

A duplex or row house purchase involves ownership of both the land and the structure, unlike a flat where the buyer holds only a UDS share of the common land. This means the verification must cover the plot’s title chain, boundary demarcation and building compliance — a scope closer to a plot purchase than an apartment purchase.

Q2. How do I verify the plot boundary for a row house?

Obtain the tippani from the survey department, commission a licensed surveyor for physical measurement, compare against all four adjacent properties, confirm the sale deed matches the tippani, and for gated communities verify consistency between the master layout and the individual sale deed.

Q3. What is a shared wall agreement and do I need one?

A shared wall agreement documents the rights and responsibilities of adjacent row house owners regarding the party wall between their units — who can build against it, who maintains it and what happens during reconstruction. Without this agreement, informal assumptions lead to neighbour disputes.

Q4. Does a row house need its own building plan sanction?

Yes. Each row house unit must have its own individual building plan sanction — not just the master layout plan for the entire development. The individual plan confirms the specific unit’s dimensions, height and compliance with local regulations.

Q5. Does each row house in a development get a separate OC?

Yes. The OC must cover the specific row house unit being purchased — not just the master development. An OC for the overall project does not automatically cover each individual unit. Confirm the OC mentions the specific unit number and plot.

Q6. What drainage or utility easements should I check in a row house purchase?

Check for shared drainage lines, water supply pipes or electrical cables that cross the plot boundary. These easements should be documented in the sale deed or the master layout plan. Undocumented utility crossings create maintenance disputes and access complications.

Q7. What is a tippani and why is it important for a row house check?

A tippani is the official survey sketch from the government survey department showing a plot’s dimensions, boundaries and relation to adjacent properties. It is the authoritative reference against which physical boundaries are compared — essential for identifying encroachments or mismatches.

Q8. Who owns the boundary walls between adjacent row houses?

Boundary wall ownership is defined by the master layout plan for gated communities or by individual agreement for standalone properties. In the absence of clear documentation, boundary walls are typically treated as common or as belonging to the plot on whose side they stand.

Q9. Is a row house in a gated community verification different from a standalone duplex?

Yes. Gated community row houses rely on the master layout for plot demarcation and shared wall terms, have mandatory HOA obligations and are typically RERA-registered. Standalone duplexes require independent title verification, individual building plan sanction and have no HOA framework.

Q10. How does Legal Brigade verify duplex and row house purchases?

Legal Brigade conducts a two-layer verification covering the plot’s title chain, tippani comparison with physical survey, individual building plan sanction, OC for the specific unit, shared wall documentation review and drainage or utility easement check — with a written legal opinion addressing both land and structure.

Buying a duplex or row house in Bangalore? The plot boundary and individual building plan are the two checks that distinguish this from an apartment purchase.

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