Party Wall Requirements for Semi-Detached Properties
Why Semi-Detached Properties Have Unique Party Wall Challenges
If you own a semi-detached property in London, you share more than just a wall with your neighbour—you share structural elements, roof structures, and often complex foundation systems that make party wall matters more nuanced than in terraced houses. While terraced homes have neighbours on both sides creating predictable party wall scenarios, semi-detached properties present unique situations that often catch homeowners by surprise.
Quick Answer: Semi-detached properties require party wall notices for any work affecting the shared central wall, shared roofline (especially hip-to-gable conversions), and any excavations within 3-6 metres of the boundary. The single shared wall means both neighbours are equally affected by structural changes, making the party wall process particularly important for maintaining good neighbour relations.
This comprehensive guide explains exactly when you need party wall agreements for semi-detached properties, the most common projects that trigger requirements, and how to navigate the process successfully while preserving your relationship with your adjoining neighbour.
Understanding the Party Wall in Semi-Detached Homes
What Counts as a Party Wall in Semi-Detached Properties?
In semi-detached homes, the party wall is the central dividing wall that runs from the foundations to the roof, separating the two dwellings. However, the party wall structure often includes more than you might expect:
The party wall structure typically includes:
- The central masonry wall separating both properties (usually 9 inches/225mm thick brick)
- Shared roof structure where roof timbers from both sides rest on the party wall
- Shared chimney breast if the original fireplaces remain on the party wall
- Foundations under the party wall extending below ground
- Party fence wall if there’s a boundary wall separating gardens (typically 6ft+ height)
What’s NOT a party wall in semi-detached homes:
- External walls facing front, back, or sides (these belong entirely to one property)
- Detached garden walls or fences below 6ft height
- Modern stud walls internally on either side of the main party wall
The key distinction: in semi-detached properties, there’s one primary party wall running down the centre, unlike terraced houses which have party walls on both sides. This makes every alteration to that central wall particularly significant for both owners.
Common Semi-Detached Projects Requiring Party Wall Notices
1. Loft Conversions (Most Common Trigger)
Why semi-detached loft conversions are complex:
Loft conversions in semi-detached homes typically require more extensive party wall work than terraced houses because the shared roof structure means any work affecting the roofline impacts both properties simultaneously.
Typical party wall triggers in loft conversions:
Section 2(2)(a): Raising the Party Wall
- Building up the party wall for additional headroom
- Creating a gable end on the party wall side
- Installing dormer windows requiring party wall height increase
- Strengthening the party wall for structural loads
Section 2(2)(b): Cutting into the Party Wall
- Inserting steel beams to support new floor joists
- Creating openings for staircase access
- Installing roof timbers that bear on the party wall
- Removing or modifying chimney breasts
Example: Wandsworth Hip-to-Gable Conversion
James wanted to convert his 1930s semi-detached loft in Wandsworth into a master bedroom suite. His architect explained the project would require:
- Removing the existing hipped roof and building a gable end wall
- This would raise the party wall height by 2.1 metres
- New steel beams would bear into the party wall
- The party wall would need weatherproofing along the new exposed section
Party Wall Requirements:
- Party Structure Notice served 2 months before work
- Schedule of Condition documenting neighbour’s loft and roof
- Party Wall Award specifying weatherproofing details
- Total party wall fees: £1,350 (both surveyors’ fees paid by James)
- Timeline: 8 weeks from notice to award
Outcome: Work proceeded smoothly. The thorough party wall process actually improved neighbour relations because everything was professionally documented and the neighbour felt protected throughout.
2. Single-Storey and Two-Storey Extensions
Ground Floor Extensions:
If you’re building a rear or side extension on a semi-detached property, you’ll need a party wall notice if:
Section 1 Notice Required:
- Building on the line of junction (boundary line) between properties
- Constructing a new wall straddling the boundary
- Building a party fence wall over 6ft (1.8m) high
Section 6 Notice Required:
- Excavating within 3 metres of the neighbour’s building AND going deeper than their foundations
- Excavating within 6 metres of the neighbour’s building AND going deeper by 1+ metres than their foundations (less common in extensions)
Section 2 Notice Required:
- Tying into or cutting into the existing party wall
- Using the party wall for structural support
- Inserting beams or lintels into the party wall
Real London Example: Bromley Side Return
Sarah in Bromley wanted to extend her 1950s semi-detached home with a side return extension. The project:
- Extended 4 metres along the side of the house
- Built exactly on the boundary line
- Required foundations 1.2 metres deep
- Neighbour’s foundations were 1.0 metres deep
Party Wall Notices Required:
- Section 1 Notice: Building on line of junction
- Section 6 Notice: Excavating within 3 metres and going deeper
Process:
- Served both notices simultaneously
- Neighbour appointed their own surveyor
- Award prepared covering foundation details, method of work, and access rights
- Total fees: £1,150
- Timeline: 6 weeks
Key Issue Resolved: The neighbour was concerned about garden access. The award specified working hours (8am-6pm weekdays only) and required scaffolding to be erected entirely within Sarah’s property. Problem solved professionally.
3. Hip-to-Gable Conversions (Semi-Detached Specialty)
This is the most common party wall project for semi-detached homes and creates unique challenges.
Why hip-to-gable is party wall intensive:
Traditional semi-detached homes built between 1890-1960 typically have hipped roofs (roofs that slope on all four sides). Converting to a gable creates a vertical wall that extends the party wall height significantly.
Party wall requirements for hip-to-gable:
The work involves:
- Removing existing hipped roof structure
- Building up the party wall (often 2-3 metres higher)
- Creating new gable end wall on the party wall line
- Weatherproofing and flashing along the new party wall height
- New roof timbers bearing on the raised party wall
Section 2(2)(a) Notice Required:
- Raising the height of the party wall substantially
- Building a gable end that increases party wall exposure
Critical Detail: Weatherproofing Responsibility
When you raise a party wall for a hip-to-gable conversion, you’re creating a situation where your neighbour’s roof now abuts your new higher wall. The Party Wall Award must specify:
- Who is responsible for maintaining weatherproofing at this junction (typically the building owner—you)
- Type of flashing required (lead flashing to BS standards)
- Regular inspection requirements
- Repair obligations if leaks occur
Example: Sutton Hip-to-Gable Dispute Resolution
Mark converted his semi-detached loft using hip-to-gable construction but didn’t serve a party wall notice. Six months later, his neighbour discovered water damage in their loft where the roof met Mark’s new gable wall.
The Problems:
- No party wall notice served (breach of Act)
- No agreed weatherproofing specification
- No schedule of condition (couldn’t prove damage was new)
- Neighbour claimed £8,500 in repairs
Resolution:
- Retrospective party wall award prepared
- Surveyor inspection confirmed inadequate flashing
- Mark liable for repairs (£6,200 actual cost after surveyor assessment)
- Relationship with neighbour permanently damaged
Lesson: The £1,200 party wall process would have prevented the £6,200 repair bill and neighbour dispute. Always serve notices for hip-to-gable work.
4. Chimney Breast Removal on Party Wall
Many semi-detached homes built pre-1960 have shared chimney breasts on the party wall, with fireplaces in rooms back-to-back.
Party wall implications:
Section 2(2)(f) Notice Required:
- Cutting into the party wall to remove chimney breast
- Removing part of the party structure
Both neighbours are affected because:
- Removing your chimney breast destabilizes your neighbour’s remaining breast
- Structural support must be provided for the retention
- Both properties’ chimneys share the same foundation and external stack
Critical Engineering Requirement:
When removing a ground floor chimney breast in a semi-detached home, a structural engineer must specify:
- Gallows brackets or similar support for the retained upper floors
- Load calculations to ensure the remaining chimney breast on neighbour’s side remains stable
- Foundation implications (shared chimney foundations)
Typical Costs:
- Party wall fees: £800-£1,200
- Structural engineer: £400-£650
- Gallows brackets installation: £600-£1,000
- Total professional costs: £1,800-£2,850 (before builder costs)
Semi-Detached Specific Party Wall Issues
Issue #1: Shared Roof Space and Loft Storage
Unlike terraced houses where party walls clearly divide loft spaces, semi-detached homes often have:
- Shared roof timbers resting on the party wall from both sides
- Unclear loft boundaries when the roof structure is interconnected
- Informal loft storage that may span across the party wall line
Problem Scenario:
You convert your loft and discover during construction that your neighbour has been storing items in “their” loft space—which actually extends partially over your side of the party wall line.
Party Wall Solution:
A thorough Schedule of Condition before work begins will:
- Photograph the exact position of the party wall in the loft
- Document any neighbour’s belongings near the party wall
- Establish clear boundaries
- Protect both parties from disputes about damage or missing items
Pro Tip: Ask your surveyor to clearly mark the party wall line with spray paint in the loft during the schedule of condition. This prevents misunderstandings during construction.
Issue #2: Asymmetric Extensions Creating Oversailing
The Problem:
In semi-detached properties, if one owner extends while the other doesn’t, you can create situations where:
- Your extension roof oversails (projects over) the neighbour’s boundary
- Rainwater goods discharge toward or onto neighbour’s land
- Access for maintenance requires entering neighbour’s property
Party Wall Act Provisions:
Section 2(2)(l): Right to Weather Shared Structure
Even though this isn’t technically work ON the party wall, if your extension requires weatherproofing that affects the boundary area, it should be addressed in the party wall award.
Best Practice for Semi-Detached Extensions:
- Serve Section 1 Notice for building on line of junction
- Include in the Party Wall Award:
- Details of any oversailing (even 50mm overhang should be noted)
- Rainwater drainage arrangements
- Access rights for future maintenance
- Responsibility for any damage caused by overhanging structures
Example Resolution:
Helen’s rear extension in Richmond projected 15cm over the boundary due to gutter positioning. The party wall award specified:
- Helen obtained formal written consent for the overhang
- Helen responsible for maintaining guttering with no water discharge onto neighbour’s land
- Helen granted perpetual access rights to neighbour for their own future building work
- Legally binding provisions protecting both parties
Issue #3: Unequal Foundation Depths
Semi-detached homes often have asymmetric foundation depths, especially in:
- Properties on sloping sites
- Different construction periods for each half (one may have been built later)
- Properties where one has previously been underpinned
When This Becomes a Party Wall Issue:
If you’re extending and excavating foundations, you must check:
- Your neighbour’s foundation depth (ask their conveyancing documents or hire a surveyor to investigate)
- Calculate the 3-metre and 6-metre zones under Section 6
Section 6 Excavation Rules for Semi-Detached:
3-Metre Rule: If excavating within 3 metres of your neighbour’s building AND going deeper than their foundations, you must:
- Serve a Section 6 notice
- Potentially underpin or protect their foundations
- Provide detailed engineering drawings
6-Metre Rule: If excavating within 6 metres of your neighbour’s building AND:
- Going deeper by 1+ metres than their foundations
- Must serve Section 6 notice
- Engineering assessment required
Real Example: Hackney Foundation Mystery
David wanted to extend his semi-detached property in Hackney. His architect specified foundations at 1.2m depth. Problem: nobody knew the neighbour’s foundation depth.
Solution Process:
- Party wall surveyor wrote to neighbour requesting foundation information
- Neighbour didn’t have documents
- Surveyor dug trial hole (with permission) to expose neighbour’s foundations
- Found neighbour’s foundations at only 0.8m depth
- Section 6 notice required
- Award specified underpinning methodology to protect neighbour
Cost: Additional £800 in surveyor fees but prevented a £15,000+ foundation failure claim.
The Party Wall Process for Semi-Detached Properties
Step-by-Step Timeline
2-3 Months Before Work Starts:
Week 1-2:
- Hire RICS-qualified party wall surveyor
- Prepare detailed plans showing all work affecting party wall
- Identify which sections of Act apply (Section 1, 2, and/or 6)
Week 3-4: 4. Serve appropriate party wall notices to your neighbour
- Section 2 Notice: 2 months before work
- Section 1 Notice: 1 month before work
- Section 6 Notice: 1 month before work
- Hand-deliver or send recorded delivery
- Keep proof of service (photographs, receipts)
Week 5-8:
- Neighbour has 14 days to respond:
- Consent: No party wall award needed (rare—get legal advice)
- Dissent or no response: Party wall surveyors appointed
- If dissenting (most common in semi-detached):
- Neighbour appoints their own surveyor OR
- Neighbour allows you to appoint “Agreed Surveyor” acting for both
- Surveyors arrange access for Schedule of Condition
- Both properties photographed and documented thoroughly
Week 9-11:
- Surveyors prepare Party Wall Award covering:
- Precise scope of work permitted
- Method statements for sensitive operations
- Working hours restrictions
- Access rights
- Insurance requirements
- Dispute resolution procedures
- Award served on both owners
- Each party has 14 days to appeal to Third Surveyor (rare)
Week 12+:
- After 14 days with no appeal, work can commence
- Surveyors monitor work progress if required
- Final inspection after completion
Who Pays Party Wall Fees in Semi-Detached Properties?
Standard Rule: Building Owner Pays All Fees
If you’re doing the building work, you typically pay for:
- ✅ Your own surveyor’s fees (£600-£1,200)
- ✅ Your neighbour’s surveyor’s fees (£500-£1,000)
- ✅ Third surveyor fees if disputes arise (£800-£1,500)
Typical Fee Breakdown for Semi-Detached Projects:
| Project Type | Your Surveyor | Neighbour’s Surveyor | Total |
|---|---|---|---|
| Chimney breast removal | £400-£600 | £300-£500 | £700-£1,100 |
| Rear extension | £600-£900 | £500-£700 | £1,100-£1,600 |
| Loft conversion (standard) | £750-£1,200 | £600-£950 | £1,350-£2,150 |
| Hip-to-gable loft | £900-£1,400 | £700-£1,100 | £1,600-£2,500 |
| Basement (if applicable) | £1,500-£2,500 | £1,200-£2,000 | £2,700-£4,500 |
Why Two Surveyors in Semi-Detached?
With only one adjoining owner, the dynamics are more direct than in terraced properties. Most semi-detached neighbours prefer their own surveyor because:
- Direct impact: Changes to the single shared wall affect both homes equally
- Personal stakes: With only one neighbour, the relationship is more important
- Protection: Independent representation provides peace of mind
- Technical expertise: Their surveyor can identify issues specific to their property
Common Mistakes in Semi-Detached Party Wall Matters
Mistake #1: Assuming Informal Agreement is Sufficient
The Scenario:
You discuss your loft conversion with your semi-detached neighbour over the garden fence. They say “sounds great, no problem!” You shake hands and begin work.
The Problem:
Six months later, cracks appear in your neighbour’s bedroom ceiling. They claim your loft conversion caused it. Without a Schedule of Condition:
- You can’t prove the cracks existed before
- You can’t prove your work didn’t cause them
- You’re potentially liable for repairs you didn’t cause
The Solution:
Even with friendly neighbours, always follow the Party Wall Act formally:
- Serve proper written notices
- Engage surveyors to prepare Schedule of Condition
- Get a Party Wall Award in place
Real Cost of Informal Approach:
One Ealing homeowner faced a £12,000 claim for alleged damages because he relied on verbal agreement. With no schedule of condition, he couldn’t prove the damage existed beforehand. Proper party wall process would have cost £1,400.
Mistake #2: Not Checking Roof Structure Before Loft Plans
The Problem:
You commission loft conversion plans without checking the actual roof structure in detail. When work begins, builders discover:
- Roof timbers from both properties overlap on the party wall
- Removing existing structure affects neighbour’s roof stability
- Work required is more extensive than planned
Result:
- Delay in project (4-6 weeks)
- Revised structural plans needed (£600-£1,200)
- Additional party wall notices (£400-£800)
- Frustrated neighbour and contractor
The Solution:
Before finalizing loft plans:
- Ask your architect to inspect the actual roof structure thoroughly
- Check how roof timbers from both properties interact at the party wall
- Photograph the existing structure
- Share findings with party wall surveyor early in planning
Cost Benefit: £300 for thorough roof survey saves £2,000+ in revisions and delays.
Mistake #3: Starting Work Before Award is Final
The Problem:
Your neighbour appoints their surveyor. While surveyors prepare the award, your contractor says he’s ready to start now. You think “it’s just formality” and begin excavation for foundations.
Legal Consequences:
- You’re in breach of the Party Wall Act
- Neighbour can seek injunction to stop work (County Court)
- You may be liable for neighbour’s legal costs (£3,000-£8,000)
- Relationship with neighbour irreparably damaged
- Surveyor process becomes adversarial instead of collaborative
The Timeline Reality:
From serving notice to starting work legally:
- Notice served: Day 0
- Neighbour responds (14 days): Day 14
- Surveyors appointed: Day 15-20
- Schedule of Condition (access arranged): Day 20-35
- Award drafted and served: Day 35-50
- 14-day appeal period: Day 50-64
Minimum Total: 64 days (9+ weeks)
Pro Tip: Build this timeline into your project plan from Day 1. Never promise your contractor an earlier start date.
Special Considerations for Semi-Detached Properties
Victorian and Edwardian Semi-Detached Homes (Pre-1920)
Older semi-detached properties have unique characteristics:
Solid Brick Party Walls:
- Typically 9 inches (225mm) thick solid brick
- No cavity, no insulation
- More prone to sound transmission
- Often contains shared chimney breasts entire height of building
Party Wall Implications:
- Cutting into solid brick requires more care than modern cavity walls
- Historical mortar may be weak (lime-based rather than cement)
- Schedule of Condition must document existing cracks (common in Victorian brick)
- More sensitivity to vibration during work
Best Practice:
- Specify low-vibration cutting methods in Party Wall Award
- Hand tools for sensitive areas
- Regular monitoring during work
- More comprehensive Schedule of Condition
1930s-1960s Semi-Detached Homes
Common Features:
- 9-inch solid brick party walls
- Hipped roofs (perfect for hip-to-gable conversions)
- Shared chimney stacks
- Concrete foundations (shallower than modern standards)
Party Wall Considerations:
- Hip-to-gable conversions very popular (adding £40k-£80k value)
- Foundation depths often only 0.8-1.0 metres (Section 6 considerations)
- Original guttering may be cast iron (brittle during building work)
- Roof structure shows age—be prepared for additional support needed
Modern Semi-Detached (Post-1990)
Construction Changes:
- Cavity party walls (two separate skins with cavity)
- Deeper foundations (1.0-1.2m+ typical)
- Modern timber roof structures
- Better acoustic insulation
Party Wall Differences:
- Easier to work with cavity walls
- Less risk of structural issues
- May still require party wall notices despite modern construction
- Neighbours often have similar project aspirations (both want lofts converted)
Opportunity: Coordinate loft conversions with your semi-detached neighbour to share costs and reduce overall party wall complexity.
Frequently Asked Questions: Semi-Detached Party Walls
Q: My neighbour is building an extension. Do I need to pay for a surveyor?
A: No. If your neighbour is doing the building work, they must pay for both surveyors under the Party Wall Act. You have the right to appoint your own surveyor at their expense to protect your interests. Don’t let them pressure you into using their surveyor only—independent representation is your legal right.
Q: Can I build a loft without party wall consent if my neighbour already did?
A: No. Each building project requires its own party wall notices and process. The fact your neighbour converted their loft previously doesn’t exempt you from following the Act. However, if they didn’t follow the Act either, that’s their violation—you should still comply properly.
Q: Do I need party wall notices if my extension doesn’t touch the party wall?
A: You might still need Section 6 notices if you’re excavating within 3-6 metres of your neighbour’s building and going deeper than their foundations. In semi-detached properties, even a rear extension that doesn’t touch the party wall can trigger Section 6 requirements due to excavation proximity.
Q: What if my semi-detached neighbour refuses to respond to party wall notices?
A: After 14 days of no response, they’re deemed to have “dissented” under the Act. You can then appoint a surveyor on their behalf (they still have the right to appoint their own, and you pay both). The process continues regardless of their engagement—the Act protects both parties even if one is uncooperative.
Q: How do I find out the depth of my neighbour’s foundations?
A: Three methods:
- Ask your neighbour if they have building control documents from construction
- Check Land Registry title documents (sometimes include foundation drawings)
- Hire a party wall surveyor to dig a small trial hole (with permission) to expose foundations
Your party wall surveyor can handle this investigation as part of their service.
Q: Can we use one “Agreed Surveyor” for both properties to save money?
A: Yes, the Act allows for an “Agreed Surveyor” who acts impartially for both parties. This can save money (one fee instead of two). However:
Advantages:
- Lower total cost (£800-£1,400 instead of £1,600-£2,500)
- Simpler process
- Faster timeline
Disadvantages:
- No independent representation for adjoining owner
- If disputes arise, harder to resolve
- Less protection for adjoining owner’s specific concerns
Recommendation: For major works (loft conversions, structural extensions), most homeowners prefer separate surveyors despite higher costs. For simple work (chimney removal), agreed surveyor works well.
Taking Action: Your Semi-Detached Party Wall Checklist
3 Months Before Work:
- [ ] Hire RICS-qualified party wall surveyor
- [ ] Get detailed building plans showing party wall work
- [ ] Identify which Act sections apply (1, 2, and/or 6)
- [ ] Research neighbour’s foundation depths if excavating
- [ ] Budget £1,500-£2,500 for party wall professional fees
2 Months Before Work:
- [ ] Serve Section 2 Notice (if working on party wall)
- [ ] Serve Section 1 Notice (if building on boundary)
- [ ] Serve Section 6 Notice (if excavating near foundations)
- [ ] Keep proof of service (photos, receipts, witnesses)
- [ ] Prepare your neighbour with friendly advance conversation
6-8 Weeks Before Work:
- [ ] Neighbour responds or is deemed to have dissented
- [ ] Surveyors appointed (theirs and/or yours)
- [ ] Schedule of Condition appointments arranged
- [ ] Full photographic record of both properties
- [ ] Survey roof structure if loft conversion
4-6 Weeks Before Work:
- [ ] Surveyors draft Party Wall Award
- [ ] Review award with your surveyor for any concerns
- [ ] Award served on both parties
- [ ] 14-day appeal period begins
- [ ] Notify contractor of confirmed start date
2 Weeks Before Work:
- [ ] Confirm no appeals filed
- [ ] Award now legally binding
- [ ] Brief contractors on award requirements
- [ ] Confirm insurance documents up to date
- [ ] Share surveyor contact with contractor for any questions
During Work:
- [ ] Follow award conditions precisely
- [ ] Maintain good site practices (noise, dust, access)
- [ ] Keep neighbour informed of progress
- [ ] Address any concerns immediately through surveyors
- [ ] Document completion with photographs
After Completion:
- [ ] Final inspection by surveyors
- [ ] Any making good works completed
- [ ] Final photographs for record
- [ ] Thank your neighbour for cooperation
- [ ] Keep all party wall documents with property deeds
Conclusion: Protecting Your Semi-Detached Investment
Your semi-detached property represents a significant investment, and any building work that affects the shared central wall carries risks for both you and your neighbour. The Party Wall Act 1996 exists precisely to manage these situations professionally, preventing disputes and protecting property values on both sides.
Key Takeaways for Semi-Detached Properties:
✅ One shared wall means higher stakes – Unlike terraced properties with multiple neighbours, you and your semi-detached neighbour share a critical structural element that affects both homes equally
✅ Hip-to-gable conversions are party wall intensive – The most popular semi-detached project requires careful party wall management due to raising the shared wall height significantly
✅ Always follow the Act formally – Even friendly verbal agreements leave you exposed to liability. Professional party wall processes protect everyone involved
✅ Budget £1,500-£2,500 for party wall fees – This represents less than 2% of most project costs but provides invaluable protection against disputes
✅ Schedule of Condition is essential – Without photographic evidence of pre-existing conditions, you’re vulnerable to claims for damage you didn’t cause
✅ Good neighbour relations are worth the investment – Following proper procedures actually strengthens relationships by showing respect and professionalism
The Bottom Line:
Semi-detached property owners who follow the Party Wall Act properly save money, avoid disputes, and maintain valuable neighbour relationships. Those who skip the process risk legal action, injunctions, damage claims, and permanently fractured relationships with the one neighbour who shares their most important structural wall.
The choice is clear: invest in proper party wall procedures now, or face potentially catastrophic costs and conflicts later.
Ready to Start Your Semi-Detached Building Project?
Our RICS-qualified party wall surveyors specialize in semi-detached properties across London, handling everything from hip-to-gable loft conversions to complex extension projects. We understand the unique dynamics of semi-detached party wall matters and work to protect your interests while maintaining positive neighbour relationships.
Get Your Party Wall Process Started:
🌐 Free Guide: Download our complete party wall checklist
Our Semi-Detached Party Wall Services:
- Party Structure Notices (Section 2)
- Line of Junction Notices (Section 1)
- Excavation Notices (Section 6)
- Schedules of Condition
- Party Wall Awards
- Dispute Resolution
- Building Owner representation
- Adjoining Owner representation
Most projects from notice to award: 6-8 weeks
Typical fees: £750-£1,400 for straightforward projects
Free initial consultation to discuss your specific requirements
Don’t risk your semi-detached project—let our experienced RICS surveyors handle your party wall matters professionally and efficiently.
Disclaimer: This guide provides general information about party wall requirements for semi-detached properties under the Party Wall etc. Act 1996. Every property and project is unique. Foundation depths, structural conditions, and specific circumstances vary. Always consult with a qualified RICS party wall surveyor and structural engineer for professional advice specific to your semi-detached property. The Party Wall Act 1996 provisions should be assessed by professionals for your particular situation.
PLANNING WORK ON YOUR SEMI-DETACHED HOME? START YOUR PARTY WALL PROCESS 8-10 WEEKS BEFORE YOUR INTENDED BUILD DATE FOR A SMOOTH, DISPUTE-FREE PROJECT!
