Boundary Wall, Parapet and Railing Heights for a Delhi House: What the Unified Building Bye-Laws Allow, Where MPD-2047 Changes It, and How the Wall Is Built

The boundary wall of a residential plot in Delhi may be solid masonry to a height of 1.5 m at the front, measured from the highest adjacent road level, with anything above that built as a perforated screen such as a stone jali or an iron grill, and solid to 2.4 m along the sides and the back. A parapet or handrail at the edge of a terrace or balcony must be at least 1.0 m and at most 1.5 m high. Both rules come from the Delhi Development Authority's compendium of the Unified Building Bye-Laws 2016, clauses 7.2.6 and 7.22, and the same bye-laws say that building or rebuilding a boundary wall or parapet within those limits needs no notice and no building permit. The Master Plan for Delhi 2047, in force since 20 August 2026, leaves the residential heights alone but changes what a wall may do on other plots: optional on mixed-use plots along a main road, recessed 6 m on a new school plot, and replaced by a retractable gate on small industrial and commercial plots. This guide sets out the heights and where they are measured from, the exceptions, the permit position, what the master plan adds, the gate and driveway the new parking rule demands of a house, and how a compound wall is built so that it neither cracks every few metres nor leans into the lane.

How High Can a Boundary Wall Be?

Clause 7.2.6 of the bye-laws opens with the words 'except with the special permission of the competent authority, the following norms shall apply', and for residential plotted development (7.2.6.1) they are two. The front wall: 'maximum 1.5 m from highest adjacent road level at site/ground level to be solid (stone/brick/masonry etc.) and above 1.5 m, it should be perforated (stone jali/iron grills/vegetation) to maintain visual continuity'. The side walls and back wall: 'maximum 2.4 m from ground level to be solid'. Three points of reading. The front measurement starts at the highest adjacent road level, not at the plot's ground level, so on a plot that sits below its road a solid front wall of 1.5 m above the road is taller than 1.5 m from inside, and on a plot above the road it is shorter; our guide to houses below road level explains how that datum works through the rest of the design. The clause caps the solid part of the front wall, and asks for the part above it to be perforated, but states no overall maximum for the front wall, so a 1.5 m masonry wall with a 0.9 m grill above it is within the rule. And the side and back limit of 2.4 m is for a solid wall, which is the height most Delhi owners want for privacy from the neighbouring plot. For buildings of other occupancies, 7.2.6.2 allows 2.4 m from ground level all round. Clause 7.2.6.3 takes institutional buildings such as jails, juvenile homes, sanatoria and hospitals, industrial buildings such as workshops and factories, educational buildings including schools, colleges and hostels, and security establishments out of both limits, and 7.2.6.4 allows 3.0 m on low density residential plots of an acre or more, for security. A note to the clause adds that none of this applies where boundary walls are forbidden, or a specific height is set, by the sanctioning authority or by a layout, zonal or master plan.

Do You Need Permission to Build or Rebuild One?

Not for a wall within the norms. Clause 2.0.1(d) of the bye-laws lists the works for which 'no notice and building permit is required', provided they do not 'violate any provisions regarding building requirements, structural stability, fire safety requirements and involve no change to the cubic contents or to the built up area of the building', and item (vii) on the list is 'construction or reconstruction of parapet and also construction or re-construction of boundary walls as permissible under these bye-laws'. So an owner may rebuild a collapsing compound wall to 1.5 m solid at the front and 2.4 m at the sides without a sanction. Three limits on that freedom. A wall higher than the norms needs the 'special permission' the clause mentions, applied for through the local body. On a new house the boundary wall is drawn on the site plan that goes in for sanction anyway, and our MCD approval guide explains what the plan must show. And no wall may stand on public land at any height: the master plan's conditions for non-residential use on residential plots spell out that 'no encroachment shall be permitted on streets or public land', the bye-laws permit no projection beyond the plot boundary, and a wall built out to the edge of the lane rather than to the plot line is the kind of thing an MCD notice is written about, as our guide to notices for unauthorised construction explains.

How High Must a Parapet or Railing Be?

Between 1.0 m and 1.5 m. Clause 7.22 says parapet walls and handrails 'provided on the edges of roof terrace, balcony etc. should not be less than 1.0 m and more than 1.5 m in height', adds that the rule does not apply where a roof terrace 'is not accessible by a staircase', and allows a 'light weight screen' on the terrace to hide the water tank, DG set and other services. For buildings 24 m and taller the terrace parapet must be 1.5 m, subject to the Fire Department's approval. The definitions behind the clause settle two common questions: a balcony is a slab 'including parapet and handrail balustrade' with at least one side fully open except for the railing or parapet (1.4.13), and a verandah on an upper floor needs a '1.0 m high parapet/railing' on its open side (1.4.124). Clause 7.19 then says what a parapet does to the height of the building: 'chimneys and parapet wall not exceeding 1.5 m in height' are not counted, nor are roof tanks and their supports up to 1.8 m, a screen wall up to 1.8 m or a staircase mumty up to 3.0 m. That is why a builder floor's parapet stops at 1.5 m even when the owner would like a taller wall around the terrace: above 1.5 m it becomes part of the building's height, and the plot's height limit of 15 m or 17.5 m, which our stilt plus four guide explains, has usually been used up. The bye-laws set the heights and say nothing about the spacing of bars in a grill; a railing a child can climb or slip through is a design question, and a 1.0 m vertical-bar railing with no horizontal rungs is the safe reading of the rule. The handrail on the staircase is a separate matter, which our staircase design guide covers.

What Does MPD-2047 Change?

Nothing in the residential heights, and several things around them. For a plotted house the master plan's development controls put the building line behind the boundary: no setback up to 100 sqm, a 3 m front setback above 100 sqm up to 250 sqm, and 3 m at the front, rear and one side above 250 sqm up to 500 sqm, as our MPD-2047 guide for house owners sets out. The wall stands on the plot line; the house stands behind the setback. The plan also requires, for the first time, a car space within every plot (one equivalent car space for plots up to 250 sqm) and makes a stilt compulsory on plots above 100 sqm up to 750 sqm, so the front wall must now contain a gate and a run-in that bring a car off the lane and into the stilt. On plots where a shop, clinic or office is run under the mixed-use rules, the plan says 'boundary walls and stilts shall be optional on plots along the main access road', and that an active shopfront on a plot without stilt parking is permitted only once the parking requirement is met within the plot or close by; our mixed use guide covers the rest of those conditions. For new schools, both the bye-laws and the plan require that 'the front boundary wall shall be recessed by 6 m to accommodate visitors parking within setback area', a point for every school management planning a new block or a new campus, as our CBSE school building norms guide notes. And on commercial and industrial plots up to 2,000 sqm the plan asks for a front setback of at least 3 m with 'retractable gates' and 'without permanent boundary wall', so that goods can be loaded and unloaded inside the plot rather than on the road.

How Should a Compound Wall Be Built So It Does Not Crack or Lean?

Like a small building, with a footing, a damp-proof course, movement joints and a coping, rather than like a garden edge. A boundary wall carries little vertical load but a lot of lateral push, from wind on a tall grill, from a leaning tree, from soil where the plot is higher than the lane and from the car that reverses into it. We build compound walls in one-brick (230 mm) masonry or solid concrete block on a strip footing taken below the topsoil to firm ground, with masonry or RCC piers at the gate and at intervals along a long run, a damp-proof course at plinth level so that the wall does not draw moisture up from the ground, a sloped coping or a concrete band on top so that rain runs off rather than into the joints, and plaster and paint on both faces. The crack every Delhi owner has seen in a long compound wall, vertical, at roughly even spacing, appearing in the first year or two and widening in winter, is the one SP 25, the Bureau of Indian Standards' handbook on cracks, uses as its example of a non-structural crack from shrinkage and thermal movement; its remedy is to provide vertical expansion joints 5 to 8 mm wide at 5 to 8 m intervals in long masonry compound walls, filled with a flexible sealant, so that the movement happens in the joint; our guide to cracks in walls explains the diagnosis. The handbook's photographs also show what a growing tree does to a compound wall: its roots push the footing up and sideways. Keep the planting a metre or more off the wall, or accept that the wall will move. Where the plot is higher than the lane, the wall is also a retaining wall and needs weep holes at its base and a footing designed for the soil behind it. Grills and jalis above the solid part sit on a concrete band or in the piers, not in the plaster.

What About the Gate and the Driveway?

The gate is now part of the parking solution. MPD-2047's Table 11.5 allows 23 sqm for an open car space, 28 sqm for one covered at ground level and 32 sqm for one in a basement, and a car has to get from the lane to that space through the front wall. On a plot with a 3 m setback the gate and the run-in are in the setback; on a plot up to 100 sqm, with no setback, the car passes through the front wall straight into the stilt, and the gate's clear width and the turning room in a narrow lane decide whether the plot's own parking is usable at all. Keep the gate's swing inside the plot. The bye-laws permit nothing to project beyond the plot boundary, and a leaf that opens over the footpath blocks pedestrians and will be the first thing a neighbour complains about; on a narrow lane a sliding gate is often the only design that works. The rule that an entrance must be at least 6 m wide, with a gate that folds back against the compound wall, is a fire-access requirement for buildings that need a fire tender inside the plot, not for a plotted house. A gate post carries a heavy, swinging load at its hinges and is the one place in a compound wall where an RCC pier with a proper footing is worth insisting on.

What Does a Boundary Wall Cost?

A boundary wall is not on our published rate card, because its cost depends on things a per-square-foot rate cannot capture: the running length, how the height is split between solid masonry and jali or grill, the depth and width of the footing the soil needs, the number of piers and the gate posts, the gate itself, plaster and paint on both faces, and whether an old wall has to be demolished and its malba carried away under the rules our demolition guide describes. We quote it after the free site visit, as a measured estimate with each of those items on its own line. Our published renovation rates, from ₹800 to ₹3,000 per sqft, are for work inside a building and do not apply to a wall. For a new house the boundary wall, gate and run-in are part of the site works in our house construction packages, which start from ₹1,500 per sqft of built-up area. We are trusted by DAV Pitampura and DPS Dwarka for campus civil repairs and maintenance. To have a wall measured and priced, call +91-7838355055 or book a free site visit.