The Bay adds 548 residences across 7 towers, with official configurations covering 1, 2, 3 and 4 BHK homes. Birla Estates confirms that the phase is registered under Karnataka RERA number PRM/KA/RERA/1250/303/PR/290126/008436, dated 29 January 2026. The wider township is spread over approximately 52 acres at Shettigere Main Road, Devanahalli, before Kempegowda International Airport.

Current live-market information shows apartment sizes from roughly 485 sq ft to 2,551 sq ft, with pricing broadly around ₹68.83 lakh to ₹3.62 crore* on Housing.com. At the same time, newer active sales pages are quoting around ₹90–₹92 lakh onwards for currently available inventory, suggesting that the lowest registered-price units may no longer represent the practical entry point for every buyer.

Buyers researching Birla Trimaya phase 4 should therefore evaluate The Bay as a late-stage township entry opportunity, not merely another Devanahalli new launch.

Birla Trimaya Phase 4 Quick Overview

Project Detail	Current Information
Project Name	Birla Trimaya Phase 4 – The Bay
Developer	Birla Estates
Location	Shettigere Main Road, Devanahalli
Wider Township	Birla Trimaya
Township Area	Approx. 52 Acres
Phase 4 Status	Fourth & Final Residential Phase
Towers	7
Tower Structure	G+14
Total Homes	548
Official Configurations	1, 2, 3 & 4 BHK
Current Market Categories	1, 2, 3, 3.5 & 4.5 BHK Duplex
Size Range	Approx. 485–2,551 sq ft
Current Broad Price Range	Approx. ₹68.83 L–₹3.62 Cr*
Active Market Entry	Around ₹90–₹92 L onwards*
Open Green Space	Approx. 73%
Central Lake	Approx. 2.5 Acres
Clubhouse	Approx. 21,000+ sq ft
RERA Number	PRM/KA/RERA/1250/303/PR/290126/008436
RERA Date	29 January 2026
Possession	December 2031

Housing.com currently lists 548 homes, 73% open green spaces, a 21,000+ sq ft clubhouse and a 2.5-acre central lake for Phase 4.

Why the “Final Phase” Status Matters

Buying into the final phase of a large township can be very different from buying the first launch.

Earlier-phase buyers typically take more uncertainty around:

• township execution
• future amenities
• developer progress
• surrounding development

Phase 4 buyers can evaluate much more of the wider township in context.

They can compare:

• earlier Trimaya phases
• established project branding
• existing pricing benchmarks
• infrastructure progress
• resale trends

That can reduce some execution uncertainty, although it may also mean that the cheapest launch pricing is already behind you.

Birla Trimaya Phase 4 vs Earlier Phases

Phase 4 is not simply “more inventory.”

It is designed as a distinct final chapter called The Bay.

Birla Estates describes Phase 4 around a large man-made water body that becomes the central visual and experiential anchor of the development.

This creates a different proposition from earlier phases:

Earlier Phases May Offer

• earlier purchase prices
• more construction progress
• potentially earlier possession

Phase 4 May Offer

• newest layouts
• final-phase positioning
• water-oriented planning
• potentially stronger view premiums
• broader understanding of the completed township

The right choice depends on whether the buyer prioritizes:

price, possession or final-phase product quality.

Birla Trimaya Phase 4 Price in 2026

The Birla Trimaya phase 4 Price currently varies depending on inventory source.

Housing.com lists the phase at:

₹68.83 lakh to ₹3.62 crore*
with an average quoted rate of approximately:

₹14,200 per sq ft.

Current Housing.com Reference

Configuration	Current Listed Price*
1 BHK	From ₹68.83 L
2 BHK	From ₹1.14 Cr
3 BHK	From ₹1.49 Cr
3.5 BHK	From ₹1.63 Cr
4.5 BHK Duplex	Around ₹3.62 Cr

However, another active Phase 4 sales page currently lists:

₹92 lakh onwards*.

A different current market page shows detailed Phase 4 pricing such as:

• 1 BHK: ₹92–₹99 L
• 2 BHK: ₹1.32–₹1.41 Cr
• 3 BHK: ₹1.65–₹1.91 Cr
• 3 BHK + Study: ₹1.99–₹2.08 Cr
• large 4 BHK: ₹4.24–₹4.37 Cr.

Why Online Pricing Looks So Different

The difference can come from:

• sold-out early inventory
• base price vs current available price
• floor rise
• view premium
• duplex inventory
• launch tranche

Therefore, ₹68.83 lakh may be a valid project-level historical/current portal entry reference, but a buyer looking for live developer inventory may find the actual available entry closer to ₹90 lakh or above.

How to Compare the Real Purchase Cost

Do not compare only the headline apartment value.

Request a complete breakup including:

1. Basic apartment cost
2. Floor-rise charges
3. Preferred-location premium
4. Parking
5. Clubhouse/community charges
6. Maintenance advance
7. Corpus fund
8. GST where applicable
9. Stamp duty
10. Registration

A final-phase project often has greater pricing differentiation between:

• ordinary internal-facing units
• lake-facing homes
• upper-floor inventory
• duplex residences

Birla Trimaya Phase 4 Floor Plans

The Birla Trimaya phase 4 Floor Plans cover a wide spectrum.

Birla Estates officially lists:

• 1 BHK
• 2 BHK
• 3 BHK
• 4 BHK.

Current portals additionally classify certain plans as:

• 3.5 BHK
• 4.5 BHK duplex.

1 BHK

Approximate market size:

485–489 sq ft

This category is suitable for:

• single professionals
• couples
• investors
• lower-ticket township entry

2 BHK

Current market size is roughly:

801–810 sq ft on one Phase 4 source.

This can suit:

• young families
• professionals
• first-time premium buyers

3 BHK

Current 3 BHK categories broadly range from around:

1,045–1,165 sq ft depending on plan and whether a study is included.

This category is likely to appeal most strongly to long-term family buyers.

Large 4 BHK / Duplex

The premium large-home category extends to approximately:

2,551 sq ft.

This is targeted toward:

• HNI buyers
• multi-generational families
• luxury end-users
• buyers seeking villa-like internal space

Which Floor Plan Makes the Most Sense?

For investment:

• 1 or 2 BHK may provide lower capital exposure

For long-term self-use:

• 3 BHK may offer the most balanced family utility

For luxury self-use:

• large 4 BHK / duplex formats provide significantly greater privacy and space

The most useful metric is:

RERA carpet area ÷ all-inclusive purchase price.

Birla Trimaya Phase 4 Master Plan

The Birla Trimaya phase 4 Master Plan should be understood within the full township.

Current Phase 4 planning includes:

• 7 towers
• G+14 floors
• 548 homes
• approx. 7-acre phase footprint
• a central water-led landscape.

Birla Estates confirms that the phase forms part of the wider 52-acre layout and that common areas and amenities are being developed in phases.

The Bay and the Central Water Body

The Bay identity is built around a man-made water body at the heart of the phase.

Current project sources also highlight:

• 2.5-acre central lake
• lagoon
• pavilions
• waterfront views.

This can affect both:

• lifestyle value
• apartment pricing

Lake-facing homes may command higher PLC.

Before paying extra, verify:

• actual tower position
• permanent view line
• future construction obstruction
• exact PLC

73% Open Green Space

Housing.com currently highlights approximately:

73% open green spaces.

This can contribute to:

• tower separation
• landscaping
• outdoor recreation
• visual openness

For buyers planning long-term residence, open-space quality may matter more than the number of amenities.

Birla Trimaya Phase 4 Location

The Birla Trimaya phase 4 Location is at:

Property No. 103, Shettigere Main Road, Devanahalli, Bengaluru

before Kempegowda International Airport.

The location provides access toward:

• KIAL
• NH-44
• Devanahalli
• Doddajala
• Yelahanka
• North Bangalore employment corridors

Why Shettigere Is Strategically Important

Shettigere sits closer to the Bangalore side of the airport corridor than many deeper Devanahalli developments.

This can help buyers who want:

• airport access
• North Bangalore employment connectivity
• township living

without moving too far into peripheral Devanahalli.

Airport Advantage

Airport proximity is particularly relevant for:

• frequent flyers
• senior executives
• aviation professionals
• NRI families

However, a buyer working daily in:

• Whitefield
• Electronic City
• central Bangalore

should still test real commute times.

Birla Trimaya Phase 4 Amenities

The Birla Trimaya phase 4 Amenities are designed at both phase and township level.

Housing.com highlights:

• 21,000+ sq ft clubhouse
• cricket ground
• swimming pool
• children’s play area
• yoga/meditation
• skating
• gym
• landscaped spaces.

Because Birla Estates explicitly states that shared amenities are being developed in phases, buyers should confirm:

• which amenities belong specifically to Phase 4
• which are shared
• which are already operational
• expected completion dates.

Amenity Quantity vs Amenity Usability

A buyer should not ask only:

“How many amenities are there?”

Also ask:

• How many residents share them?
• What is the clubhouse capacity?
• What is the maintenance cost?
• Which amenities are contractual?

This gives a more realistic view of long-term lifestyle quality.

Birla Trimaya Phase 4 Gallery

The Birla Trimaya phase 4 Gallery can help buyers visualize:

• The Bay
• tower design
• lagoon
• clubhouse
• interiors

However, Birla Estates explicitly states that walkthroughs and many project visuals are computer-generated conceptual renders.

Therefore, buyers should distinguish:

CGI visual
Design intention.

Sample apartment
May include non-standard furniture.

Actual site photo
Current construction reality.

Birla Trimaya Phase 4 RERA Number

The Birla Trimaya phase 4 Rera Number is:

PRM/KA/RERA/1250/303/PR/290126/008436

Birla Estates officially confirms the registration date as:

29 January 2026.

This is the fourth separate RERA registration within the wider Birla Trimaya township.

Why Separate Phase RERA Matters

Buyers should ensure the correct number appears on:

• booking form
• allotment
• cost sheet
• Agreement for Sale

Do not accidentally use the RERA number of an earlier Trimaya phase.

Birla Trimaya Phase 4 Possession

Housing.com currently lists possession from:

December 2031.

Other current Phase 4 sources also reference:

December 2031.

A few third-party pages still show 2030, but these should not override the stronger Phase 4-specific RERA-linked timeline.

For buyer planning, use:

December 2031

unless the Agreement for Sale states a later date.

Why 2031 Matters Financially

A 2026 buyer needs to budget for:

• rent until possession
• construction-linked payments
• home-loan interest
• opportunity cost

This makes Phase 4 better suited to buyers comfortable with a medium-term construction horizon.

Birla Trimaya Phase 4 Project Details

The Birla Trimaya phase 4 Project Details should be evaluated in this order:

1. exact configuration
2. RERA carpet area
3. total cost
4. tower
5. floor
6. lake-facing premium
7. possession

Many buyers start with amenities.

For a ₹1–₹4 crore purchase, apartment efficiency and total cost should come first.

Current Booking Momentum

Birla Estates’ latest project-update page reports that Phase 4 generated approximately ₹649 crore in bookings in FY26 after its January 2026 launch.

This indicates strong early absorption.

But high demand does not automatically mean every remaining apartment is attractive.

As sales progress:

• preferred views can disappear
• lower floors can sell out
• pricing can rise

Always assess the actual remaining unit.

Birla Trimaya Phase 4 Contact

Buyers can use the Birla Trimaya phase 4 Contact page to request:

• live inventory
• latest price sheet
• floor plans
• construction updates
• payment schedule

Ask specifically:

• Which tower is open?
• Which units face The Bay?
• What is the all-inclusive cost?
• What is the RERA carpet area?
• Is the ₹90–₹92 lakh inventory still available?

About Birla Estates

The Birla Trimaya phase 4 About Builder section helps buyers understand the developer.

Birla Estates is part of the Aditya Birla Group’s real-estate business and has developments across major Indian cities.

Buyers comparing Birla Estates projects should evaluate:

• location
• construction stage
• pricing
• product segment
• RERA

rather than relying only on the corporate brand.

Is Birla Trimaya Phase 4 Better for End-Users?

The project can be attractive for end-users because of:

• integrated township scale
• wide configuration range
• water-oriented landscaping
• airport corridor access
• final-phase planning

Strong End-User Advantage

By the time Phase 4 is completed, buyers may benefit from a more mature wider township compared with first-phase residents.

Is Phase 4 Good for Investors?

Potential positives include:

• final-phase scarcity
• Birla brand
• established Trimaya identity
• airport corridor
• strong booking momentum

Potential risks include:

• elevated current pricing
• 2031 possession
• competing North Bangalore inventory
• rental yield relative to capital cost

Phase 4 may therefore suit a medium- to long-term investor rather than someone expecting a quick flip.

Final Phase vs First Phase: Investment Logic

Factor	Early Phase	Phase 4
Entry Price	Usually Lower	Usually Higher
Execution Visibility	Lower	Higher
Township Maturity	Lower	Higher
Inventory Choice	Initially Broad	Final New Inventory
Buyer Risk	Higher Early-Stage Risk	Better Execution Visibility
Possession	Often Earlier Now	December 2031

This highlights the main trade-off:

earlier buyers took more execution risk; Phase 4 buyers pay more for greater township visibility.

Upcoming Residential Projects in Bangalore

Buyers comparing Upcoming Residential Projects in Bangalore should position Birla Trimaya Phase 4 within the premium North Bangalore township category.

Useful comparison parameters include:

• price per sq ft
• RERA
• possession
• airport access
• township size
• open space
• developer history

The Bay stands out because it combines:

final-phase scarcity + established township identity + water-led planning.

Buyer Due-Diligence Checklist

Before booking Birla Trimaya Phase 4, verify:

• RERA
• exact tower
• apartment number
• carpet area
• saleable area
• floor
• facing
• lake-view claim
• floor-rise charges
• PLC
• parking
• maintenance
• GST
• stamp duty
• possession
• payment schedule
• cancellation policy
• Agreement for Sale

Also verify whether any advertised amenity belongs to:

• Phase 4
  or
• the wider township.

Frequently Asked Questions About Birla Trimaya Phase 4

1. What is Birla Trimaya Phase 4?

Birla Trimaya Phase 4, called The Bay, is the fourth and final residential phase of the 52-acre Birla Trimaya township in Devanahalli.

2. How many homes are there?

Phase 4 contains 548 residences.

3. How many towers are planned?

Current project information shows 7 towers with G+14 floors.

4. What configurations are available?

Birla Estates officially offers:

• 1 BHK
• 2 BHK
• 3 BHK
• 4 BHK.

5. What are the current apartment sizes?

Housing.com currently lists approximately 485–2,551 sq ft.

6. What is the current starting price?

Housing.com shows project-level pricing from approximately ₹68.83 lakh*, while current active sales pages show around ₹90–₹92 lakh onwards* for available inventory.

7. What is the RERA number?

PRM/KA/RERA/1250/303/PR/290126/008436.

8. When was Phase 4 RERA registered?

The registration is dated 29 January 2026.

9. What is the possession date?

Current Phase 4 sources consistently indicate December 2031.

10. How large is the central lake?

Current market data highlights a 2.5-acre central lake.

11. How much open space is planned?

Housing.com currently lists approximately 73% open green spaces.

12. How large is the clubhouse?

Current Phase 4 project data highlights approximately 21,000+ sq ft.

13. How strong has Phase 4 demand been?

Birla Estates reports approximately ₹649 crore in Phase 4 bookings during FY26.

14. Is Birla Trimaya Phase 4 a good investment?

It may suit long-term buyers because of final-phase scarcity, Birla Estates branding, airport-corridor growth and the established Trimaya township. Buyers should still evaluate current premium pricing and the 2031 completion horizon.