Strong returns begin with accurate appraisals

Ditch the spreadsheets and elevate your appraisal process with our purpose-built cloud solution. Access preconfigured templates, collaborate with your team or external invitees, navigate history and, when you're done, share or export to update project stakeholders.

4.5 onTrustpilot 5 Star Reviews
Join 3600+ professionals already using BOOM!
BOOM! Appraisal screenshot light
Confused by complex calculations? Appraisal delivers clear, reliable results
Say goodbye to the frustration of juggling spreadsheets and complex formulas. We've simplified the entire process, providing clear and accurate results tailored to your specific project needs.
Gross Development Value
Your gross development value begins with an accommodation schedule
Accurate project returns start with a detailed accommodation schedule. Our intuitive interface caters for all project scenarios determined by the Use Classes you're delivering. Perfect for seasoned developers and new entrants alike.
BOOM! Appraisal Gross Development Value screenshot light
BOOM! Appraisal Planning screenshot light
Planning Costs
Capture planning costs with confidence
Appraisal is equipped with built-in guidance that ensures every planning expense is accounted for. From option and legal fees to consultant services, surveys and planning costs and finance; we help you capture the full picture.
Development Contributions
Properly account for development contributions
Calculate project contributions with ease. Appraisal simplifies the process of managing Community Infrastructure Levy (CIL) and Section 106 contributions.
BOOM! Appraisal Development Contributions screenshot light
Cost planning and communication, the foundations of project success
Poor planning is the leading cause of project failure. Avoid costly mistakes by adopting Appraisal before deep diving into its sensitivity analysis.
BOOM! Appraisal Sensitivity Analysis screenshot light
BOOM! Appraisal Building Works screenshot light
Building Works
Master build costs with confidence
The build phase is where a project is won or lost, with accurate build costs the backbone. Appraisal is based on RICS NRM 1 and allows for m2 costing or detailed cost breakdown. From materials to labour, to major trade/work packages - you can even invite builders, trades and consultants to collaborate!
Disposal Cost
Stay on top of agent, legal, tax and marketing fees
Disposal costs can quickly erode your bottom line. Appraisal ensures you easily account for unavoidable, but often overlooked costs. By accurately estimating critical expenses you'll develop a clear picture of project profitability.
BOOM! Appraisal Disposal Costs screenshot light
BOOM! Appraisal Finance Costs screenshot light
Finance & Strike Price
Calculate funding costs before determining your strike price
Funding costs, project timelines and sales tails are accounted for in Appraisal. When entered, establish your strike price via the slide tool to determine your target profit and strike price; Appraisal will also inform you of any mezzanine and bridging you may need to consider.
Trusted by 3,600+ property professionals
From site sourcers and land agents to developers and planning consultants, BOOM! powers your deals.
Trustpilot 5 Star Reviews
"An excellent piece of software"

"An excellent piece of software and much more cost-effective than their competitors! Simon and Jonathan have a real passion for Boom and always provide help when needed. I would definitely recommend giving Boom a try if you haven't already."

Trustpilot 5 Star Reviews
"Amazing software and the team is so..."

"Amazing software and the team is so helpful. It’s now a key tool I use daily to find mine and my investors next investment."

Trustpilot 5 Star Reviews
"Jonathan and Simon genuinely care about..."

"Jonathan and Simon genuinely care about their customers and always put their needs first. I highly recommend BOOM!"

Trustpilot 5 Star Reviews
"Amazing software"

"Amazing software! Everything you need on one platform! I’d recommend this to anyone."

Trustpilot 5 Star Reviews
"Great company!"

"Great company, amazing how affordable it is for property investors getting started. I will always continue to use BOOM."

Trustpilot 5 Star Reviews
"This is a great platform with amazing..."

"This is a great platform with amazing support. All questions are answered with perfect detail. You get much more bang for your buck compared to some of the other apps out there. The team have so much knowledge and experience and are a really friendly bunch"

Trustpilot 5 Star Reviews
"Having understood the benefits of Boom..."

"Having understood the benefits of Boom on a recent webinar with Greg, I was able to understand how to effectively use the platform to search for land developments. I'm particularly excited to use the pipeline benefits to help me find more deals!"

Trustpilot 5 Star Reviews
"Stunning piece of kit"

"Stunning piece of kit. Best on the market! A must for anyone involved in UK land. Don’t know how they do it for the price!!"

Trustpilot 5 Star Reviews
"Fabulous platform"

"Fabulous platform - so many features! Absolutely amazing value - compared to most search land apps. Would recommend - yo do need to watch a few of the training videos to fully understand what level of detail they have. Really helpful support team also."

Trustpilot 5 Star Reviews
"BoomTastic"

"Having used competitors similar software the Boom Mapping system offers exactly the same results for much better value for money. Any identified queries are resolved swifty and improvements made. As park of the overall Boom platform the mapping system is great.y of benefit but unlike the competitors offers significantly more with sites available that are not widley known about."

Trustpilot 5 Star Reviews
"BOOM platform is superb"

"BOOM platform is superb, amazing value and very efficient. The team that sit behind BOOM are very supportive and professional with the training and managing any queries or questions, they also very open to feedback ensuring the platform is consistently evolving and improving."

Trustpilot 5 Star Reviews
"Why I switched to BOOM! (And you should too!)"

"I've tried almost every UK online land and property sourcing tool, and BOOM! is the clear winner. It's the only platform I've found that offers both extensive property and planning data, as well as a detailed development appraisal tool, all at an unbeatable price. Why pay more for less with other services?"

Trustpilot 5 Star Reviews
"Really good experience with these guys"

"Really good experience with these guys. Extremely good software and phenomenal support from Simon. Thanks again. Highly recommended"

The best deal in property tech

Get the same powerful tools and data for 80% less, saving you thousands while you grow your property income stream.
4.5 onTrustpilot 5 Star Reviews
Join 3600+ professionals already using BOOM!

Explore more with our video tutorials

Explore all video tutorials