Building Materials for a House in Himachal and Uttarakhand Hill Towns: What to Use and Why

In Himachal and Uttarakhand hill towns, build light, tied together and warm: an earthquake-detailed concrete frame, or brick, block or dressed-stone walls in cement mortar with concrete bands, plus insulated walls and roof, a pitched roof that sheds snow, and a slope checked before anything is dug. Shimla, Dehradun, Nainital and Almora are in seismic Zone IV and Mandi is in Zone V; Dehradun gets about 2,160 mm of rain a year and Shimla averages close to 40 cm of snow in each of January and February.

What the hills ask of a house

Cold, rain and snow

IMD's 1991 to 2020 normals for Dehradun give 2,161.5 mm of rain a year, with 622 mm in July and 715 mm in August, daily highs from about 20 °C in January to 35 °C in May, and January lows near 7 °C. The IMD Meteorological Centre's Climate of Shimla gives 1,415 mm of rain a year, mean highs of 10 to 24 °C and mean lows of 2.5 to 16 °C; its snow records for 1990-91 to 2010-11 average 38 cm in January and 39 cm in February.

Which climate zone you are in

BEE's Eco-Niwas Samhita 2024 (ENS) lists Manali, Kullu and Sundernagar as cold and Dehradun as composite in its city table; Shimla is not in the table, so check its zone map in Annexure 9. In the cold zone, ENS asks for walls (with their windows) with a U-value of no more than 1.8 W/m²K, a roof of no more than 1.2 W/m²K, and openable windows of at least 8.33% of floor area. ENS binds only large projects, but its targets suit any house.

Earthquakes: Zones IV and V

IS 1893 (Part 1):2016 lists Shimla, Dehra Dun, Nainital, Almora and Roorkee in Zone IV (zone factor 0.24) and Mandi in Zone V (0.36). NDMA's landslide strategy notes that half of Uttarakhand lies in Zone V. BIS issued a revised map with a new Zone VI in November 2025 that placed the whole Himalayan belt in it, but withdrew it in March 2026, so the 2016 code still applies, as ETV Bharat reported. Ask your structural engineer to confirm the zone for your exact site.

Slopes and landslides

The National Disaster Management Authority's National Landslide Risk Management Strategy (2019) cites GSI's estimate that 12.6% of India's land is landslide-prone, and names major parts of Himachal Pradesh and Uttarakhand among the vulnerable areas. It flags unplanned slope cutting and overloading as a problem, and observes that building rules in Indian hill towns are mostly modelled on Delhi's master plans, which do not suit hill terrain.

Structure and walls

A frame or banded masonry

If you build a reinforced concrete frame, IS 13920:2016 requires its ductile detailing in Zones III, IV and V, with concrete of at least M20. If you build load-bearing walls, IS 4326:2013 puts an ordinary house in Zone IV in Category D and in Zone V in Category E, which means reinforced concrete bands, vertical bars at corners and jambs, and openings kept well away from corners. It allows bricks or solid blocks of at least 3.5 MPa or squared stone, and adds a plinth band where strip footings sit on soft or uneven soil, "as frequently happens in hill tracts". Our Guwahati and Northeast guide walks through Zone V detailing.

Stone walls, done the safe way

IS 13828:1993, written after earthquake damage in Himachal and the hill districts of then Uttar Pradesh, sets out the minimum for random rubble and half-dressed stone walls: cement-sand 1:6, lime-sand 1:3 or good clay mud mortar, a wall no thicker than 450 mm (about 350 mm preferred) with both faces interlocked, "through" stones every 600 mm of height and no more than 1.2 m apart, roof projections of about 500 mm to keep rain off, and waterproof outer plaster. It rules such low-strength masonry out of its highest-risk category; its categories predate the current seismic code, so ask your engineer how they apply. Our guidance in Zones IV and V: cement mortar, bands and corner bars.

Which wall material, and insulation

Weight attracts earthquake force, so lighter walls help, and ENS's material table gives AAC a thermal conductivity of 0.184 W/mK against 0.98 for dense burnt brick and 0.072 to 0.144 for timber. Worked through ENS's method, a 230 mm brick wall with 12 mm plaster on each side comes out at about 2.3 W/m²K, short of the 1.8 cold-zone target; adding 50 mm of expanded polystyrene brings it to about 0.6, and a plastered 200 mm AAC wall alone is about 0.8. More in our wall materials comparison. If your site is within 300 km of a coal or lignite power plant, MoEFCC's ash notification, as amended in January 2024, requires building projects, private agencies included, to use ash bricks or other ash products when priced within the CPWD or state PWD schedule. Whether that binds a family's own house is not stated, so check locally.

Roofs: pitched, insulated, built for snow

IS 875 (Part 4):1987 names districts of Himachal (including Shimla, Kullu, Mandi, Chamba, Kinnaur and Sirmaur) and of present-day Uttarakhand (Dehradun, Tehri Garhwal, Almora and Nainital) as getting snow. It sets the roof snow load as a shape coefficient times the ground snow load: 0.8 for flat and pitched roofs up to 30°, falling to zero at 60°, while valleys between roofs can collect 1.6 times the ground load. It gives no ground snow figures for Indian towns and refers designers to DRDO's Snow and Avalanche Study Establishment in Manali or IMD Pune. IS 4326 wants trusses bolted down to a concrete band and braced in plan, and notes that hipped roofs have behaved better in earthquakes than gable-ended ones. Our guidance: a simple pitched roof without valleys or deep parapets.

Slate is the traditional covering. IS 6250:1981 notes slate in the Kumaon, Garhwal, Mandi, Kangra and Chamba hills, and sets standard tiles of 600 × 300 mm and 500 × 250 mm, at least 15 mm thick, with average water absorption of no more than 2% and a modulus of rupture of at least 60 N/mm² dry and 40 wet. It is heavy, so the frame must be designed for it; a coated metal sheet is the lighter choice. Either way, insulate: by ENS's method a bare 150 mm RCC slab is near 4 W/m²K, against the 1.2 limit. For sealing it, see our waterproofing guide.

Kath-kuni and Koti Banal: what tradition teaches

Himachal's kath-kuni walls lace dry stone with timber. Field surveys and lab tests by Ashutosh Kumar and Vasilis Sarhosis, listed by IIT Mandi, found symmetrical plans, lintels over openings and interlocked corners were the main sources of their earthquake resilience, and that the contact between timber and stone adds to a wall's shear capacity. An earlier survey by the same group flagged mass concentrated high up as a weakness.

The World Housing Encyclopedia's report on Koti Banal architecture of Uttarakhand and southern Himachal, by Piyoosh Rautela and colleagues, describes houses of four or five storeys on dry-stone platforms: deodar logs pinned at the corners, dressed flat stones packed in the 30 cm gaps, walls 50 to 60 cm thick, small timber-framed openings and slate roofs. It compares the timber courses to modern seismic bands, and records that the style was abandoned mainly for lack of timber (42% of owners cited it). The lesson for a new house is the principle: a regular plan, small openings, ties at every level and light upper floors.

See more of Techarch's Eagle Nest Resort in Dharamsala on MOA.

Foundations, slopes, floors and finishes

• Slope first. Get a soil and slope investigation before design; check the plot with our 12 checks before buying land.
• Retaining walls. IS 14458 (Part 1):1998 calls for proper drainage behind every retaining wall, warns against stacking walls one above another on an unstable slope, and says dry-stone and timber-crib walls suit only slopes under 30° and heights under 4 m, not terraces.
• Plinth. Raise it, with a damp-proof course; IS 13828 suggests one at plinth level to stop rising damp.
• Floors and finishes. Our guidance: timber plank or stone floors over an insulated base, and deep eaves with waterproof outer plaster.

Hill building rules vary by town and change often: check them with Himachal's Town and Country Planning Department or your municipal body, or in Uttarakhand with the development authority, such as the Mussoorie Dehradun Development Authority.

What these materials cost: indicative schedule rates

The schedule has no slate roofing item, so get written slate quotes and ask for test results against IS 6250. For current prices, ask your engineer for the latest state PWD or cost-index rates for your town, and get two or three written supplier quotes that state whether carriage to your site is included. For the whole-house budget, see our state-wise construction cost breakdown or MOA's home cost calculator.

Mistakes to avoid

• Building rubble walls in mud mortar without through-stones, bands or corner bars.
• Cutting into the slope without a geotechnical check, drainage and designed retaining walls.
• A flat, uninsulated RCC roof in a snow town, or a roof with valleys that collect drifts.
• Buying slate, steel or blocks without test certificates and a BIS mark where one applies.

FAQ

Which material is best for house construction in Himachal?

Structure matters more than the material: an RC frame to IS 13920, or brick, block or stone walls in cement mortar with bands and corner bars to IS 4326, plus wall and roof insulation.

Is Shimla in seismic zone 4 or 5?

Zone IV, with a zone factor of 0.24, under IS 1893 (Part 1):2016, the code in force. Dehradun, Nainital and Almora are also Zone IV; Mandi is Zone V.

Is kath-kuni construction still practical?

Rarely as a whole house, mainly because timber is scarce. Its principles of symmetry, small openings and continuous ties carry straight into modern banded masonry.

What is the construction material price in Himachal and Uttarakhand?

CPWD's 2023 Delhi schedule gives random rubble stone masonry at ₹9,275 per cubic metre and brickwork in 1:4 mortar at ₹9,344, at Delhi April 2023 prices; Uttarakhand adds a CPWD cost index for each place. Get local quotes.

Planning a house in the hills? An architect working with a structural engineer can choose materials for your slope, snow and seismic zone. Find an architect on MOA, or see studios in Dehradun.

Sources

• India Meteorological Department: Dehradun climatological table, 1991 to 2020 (accessed 18 Oct 2026)
• India Meteorological Department, Meteorological Centre Shimla: Climate of Shimla, temperature, rainfall and snowfall tables (accessed 18 Oct 2026)
• Bureau of Energy Efficiency: Eco-Niwas Samhita 2024, sections 2.2, 5.2.1 and 9.3, Annexure 9 (accessed 18 Oct 2026)
• Bureau of Indian Standards, via Public.Resource.Org on the Internet Archive: IS 1893 (Part 1):2016 Criteria for earthquake resistant design of structures, IS 4326:2013 Earthquake resistant design and construction of buildings and IS 13920:2016 Ductile design and detailing of RC structures (accessed 18 Oct 2026)
• Bureau of Indian Standards, via Public.Resource.Org: IS 875 (Part 4):1987 Snow loads, IS 6250:1981 Roofing slate tiles, IS 13828:1993 Improving earthquake resistance of low strength masonry buildings and IS 14458 (Part 1):1998 Retaining walls for hill area (accessed 18 Oct 2026)
• ETV Bharat: A bold policy reversed, the withdrawal of India's 2025 seismic code (C P Rajendran, 11 Mar 2026) (accessed 18 Oct 2026)
• National Disaster Management Authority: National Landslide Risk Management Strategy, September 2019 (NIDM copy) (accessed 18 Oct 2026)
• World Housing Encyclopedia: Rautela, Joshi, Singh and Lang, Timber-reinforced Stone Masonry (Koti Banal Architecture) of Uttarakhand and Himachal Pradesh, report 150 (accessed 18 Oct 2026)
• IIT Mandi: Kumar and Sarhosis, Kath-Kuni architecture: field investigations and material characterisation, 2023 (accessed 18 Oct 2026)
• White Rose Research Online: Sharma, Kumar and Sarhosis, Evaluating the Seismic Performance of Domestic and Historical Masonry Structures in Himachal Pradesh, 2021 (accessed 18 Oct 2026)
• Ministry of Environment, Forest and Climate Change: S.O. 05(E), amendment to the ash utilisation notification, 1 January 2024 (accessed 18 Oct 2026)
• Public Works Department, Uttarakhand: Circulars (Estimate and SOR), including the minutes of 30 December 2019 on applying DSR 2018 to building works (accessed 18 Oct 2026)
• Central Public Works Department: Delhi Schedule of Rates 2023, Vol. 1 (accessed 18 Oct 2026)